Opening a browser shuts off audio

I categorized this in ‘sound’ because I had a similar issue before, but it was infrequent then, and could be ameliorated by rebooting. Ever since I updated Firefox to 98.0-1, however, this issue triggers as soon as I start Firefox (it also appears to happen whenever I start Signal, EDIT: or Chrome). While PulseAudio Volume Control doesn’t seem to show any change (apart from a notification that is identical to the one it gives when I plug in my headphones, i.e. a volume bar that is partially full and not muted), I can no longer play audio or video (EDIT: I can no longer play video on browser; VLC still smoothly plays, but without audio). For example Spotify slowly advances a few seconds without audio before it says it cannot play the current track.

Is there any information that would be helpful to give in diagnosing this problem? And how should I handle it?

Thank you very much

I tried using Chrome in lieu of Firefox, but the same error happened, though without a notification, so I do not know if it occurred due to Chrome, or at startup (EDIT: I now know it occurred upon opening Chrome, not startup). I also updated my system; here’s the updated inxi --admin --verbosity=7 --filter --width:

➜  ~ inxi --admin --verbosity=7 --filter --width
System:
  Kernel: 5.4.184-1-MANJARO x86_64 bits: 64 compiler: gcc v: 11.2.0
    parameters: BOOT_IMAGE=/boot/vmlinuz-5.4-x86_64
    root=UUID=86444332-12e8-4d6a-9b67-a72399e909e3 rw quiet
    resume=UUID=aa3afce6-e8dd-4ba1-b36e-2a743fc221eb
  Desktop: Xfce 4.16.0 tk: Gtk 3.24.29 info: xfce4-panel wm: xfwm 4.16.1
    vt: 7 dm: LightDM 1.30.0 Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Laptop System: Dell product: XPS 15 9570 v: N/A
    serial: <superuser required> Chassis: type: 10 serial: <superuser required>
  Mobo: Dell model: 02FC04 v: A00 serial: <superuser required> UEFI: Dell
    v: 1.19.0 date: 03/16/2021
Battery:
  ID-1: BAT0 charge: 12.5 Wh (29.5%) condition: 42.4/56.0 Wh (75.7%)
    volts: 11.0 min: 11.4 model: LGC-LGC4.86 DELL 62MJV type: Li-ion
    serial: <filter> status: Discharging
Memory:
  RAM: total: 7.42 GiB used: 5 GiB (67.3%)
  RAM Report:
    permissions: Unable to run dmidecode. Root privileges required.
CPU:
  Info: model: Intel Core i5-8300H bits: 64 type: MT MCP arch: Coffee Lake
    family: 6 model-id: 0x9E (158) stepping: 0xA (10) microcode: 0xEC
  Topology: cpus: 1x cores: 4 tpc: 2 threads: 8 smt: enabled cache:
    L1: 256 KiB desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB desc: 4x256 KiB
    L3: 8 MiB desc: 1x8 MiB
  Speed (MHz): avg: 900 min/max: 800/4000 scaling: driver: intel_pstate
    governor: powersave cores: 1: 900 2: 900 3: 900 4: 900 5: 900 6: 900 7: 900
    8: 900 bogomips: 36812
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat
    arch_capabilities arch_perfmon art avx avx2 bmi1 bmi2 bts clflush clflushopt
    cmov constant_tsc cpuid cpuid_fault cx16 cx8 de ds_cpl dtes64 dtherm dts
    epb ept ept_ad erms est f16c flexpriority flush_l1d fma fpu fsgsbase fxsr
    ht hwp hwp_act_window hwp_epp hwp_notify ibpb ibrs ida intel_pt invpcid
    invpcid_single lahf_lm lm mca mce md_clear mmx monitor movbe mpx msr mtrr
    nonstop_tsc nopl nx pae pat pbe pcid pclmulqdq pdcm pdpe1gb pebs pge pln
    pni popcnt pse pse36 pti pts rdrand rdseed rdtscp rep_good sdbg sep smap
    smep ss ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp syscall tm tm2 tpr_shadow
    tsc tsc_adjust tsc_deadline_timer vme vmx vnmi vpid x2apic xgetbv1 xsave
    xsavec xsaveopt xsaves xtopology xtpr
  Vulnerabilities:
  Type: itlb_multihit status: KVM: Split huge pages
  Type: l1tf
    mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable
  Type: meltdown mitigation: PTI
  Type: spec_store_bypass
    mitigation: Speculative Store Bypass disabled via prctl and seccomp
  Type: spectre_v1
    mitigation: usercopy/swapgs barriers and __user pointer sanitization
  Type: spectre_v2 mitigation: Retpolines, IBPB: conditional, IBRS_FW,
    STIBP: conditional, RSB filling
  Type: srbds mitigation: Microcode
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Intel CoffeeLake-H GT2 [UHD Graphics 630] vendor: Dell
    driver: i915 v: kernel ports: active: eDP-1 empty: DP-1,DP-2,DP-3
    bus-ID: 00:02.0 chip-ID: 8086:3e9b class-ID: 0300
  Device-2: Microdia Integrated_Webcam_HD type: USB driver: uvcvideo
    bus-ID: 1-12:4 chip-ID: 0c45:671d class-ID: 0e02
  Display: x11 server: X.Org v: 1.21.1.3 compositor: xfwm v: 4.16.1 driver:
    X: loaded: modesetting alternate: fbdev,vesa gpu: i915 display-ID: :0.0
    screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2")
    s-diag: 582mm (22.9")
  Monitor-1: eDP-1 model: Sharp built: 2018 res: 1920x1080 hz: 60 dpi: 142
    gamma: 1.2 size: 344x194mm (13.5x7.6") diag: 395mm (15.5") ratio: 16:9
    modes: 1920x1080
  Message: Unable to show GL data. Required tool glxinfo missing.
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: Dell driver: snd_hda_intel
    v: kernel alternate: snd_soc_skl,snd_sof_pci bus-ID: 00:1f.3
    chip-ID: 8086:a348 class-ID: 0403
  Sound Server-1: ALSA v: k5.4.184-1-MANJARO running: yes
  Sound Server-2: sndio v: N/A running: no
  Sound Server-3: JACK v: 1.9.20 running: no
  Sound Server-4: PulseAudio v: 15.0 running: yes
  Sound Server-5: PipeWire v: 0.3.48 running: yes
Network:
  Device-1: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter
    vendor: Rivet Networks Killer Wireless-n/a/ac 1535 driver: ath10k_pci
    v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1 bus-ID: 3a:00.0
    chip-ID: 168c:003e class-ID: 0280
  IF: wlp58s0 state: up mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: noprefixroute scope: link
  WAN IP: <filter>
Bluetooth:
  Device-1: Qualcomm Atheros type: USB driver: btusb v: 0.8 bus-ID: 1-4:2
    chip-ID: 0cf3:e301 class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 1 state: down bt-service: enabled,running
    rfk-block: hardware: no software: yes address: see --recommends
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 931.51 GiB used: 332.02 GiB (35.6%)
  SMART Message: Required tool smartctl not installed. Check --recommends
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Crucial model: CT1000P1SSD8
    size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
    lanes: 4 type: SSD serial: <filter> rev: P3CR010 scheme: GPT
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 922.42 GiB size: 906.94 GiB (98.32%)
    used: 331.27 GiB (36.5%) fs: ext4 dev: /dev/nvme0n1p2 maj-min: 259:2
    label: N/A uuid: 86444332-12e8-4d6a-9b67-a72399e909e3
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
    used: 50.4 MiB (16.8%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1
    label: N/A uuid: B8BB-CF47
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default)
  ID-1: swap-1 type: partition size: 8.8 GiB used: 718.2 MiB (8.0%)
    priority: -2 dev: /dev/nvme0n1p3 maj-min: 259:3 label: N/A
    uuid: aa3afce6-e8dd-4ba1-b36e-2a743fc221eb
Unmounted:
  Message: No unmounted partitions found.
USB:
  Hub-1: 1-0:1 info: Hi-speed hub with single TT ports: 16 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Device-1: 1-4:2 info: Qualcomm Atheros type: Bluetooth driver: btusb
    interfaces: 2 rev: 2.0 speed: 12 Mb/s power: 100mA chip-ID: 0cf3:e301
    class-ID: e001
  Device-2: 1-7:3 info: Shenzhen Goodix Fingerprint Reader
    type: Abstract (modem),CDC-Data driver: N/A interfaces: 2 rev: 2.0
    speed: 12 Mb/s power: 100mA chip-ID: 27c6:5395 class-ID: 0a00
    serial: <filter>
  Device-3: 1-12:4 info: Microdia Integrated_Webcam_HD type: Video
    driver: uvcvideo interfaces: 2 rev: 2.0 speed: 480 Mb/s power: 500mA
    chip-ID: 0c45:671d class-ID: 0e02
  Hub-2: 2-0:1 info: Super-speed hub ports: 10 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
  System Temperatures: cpu: 25.0 C pch: 42.0 C mobo: N/A
  Fan Speeds (RPM): cpu: 2523 fan-2: 2512
Info:
  Processes: 279 Uptime: 5m wakeups: 547 Init: systemd v: 250 tool: systemctl
  Compilers: gcc: 11.2.0 clang: 13.0.1 Packages: 1856 pacman: 1849 lib: 480
  flatpak: 7 Shell: Zsh v: 5.8.1 running-in: xfce4-terminal inxi: 3.3.13

(In addition, the reason I am using Kernel 5.4.x is because when I upgraded to 5.15.x, Light DM stopped working in ~3 of 5 boot-ups. Previously, I had display problems in 5.10.x)

Following a similar thread, here’s some information on my PulseAudio:

➜  ~ pacmd
Welcome to PulseAudio 15.0! Use "help" for usage information.
>>> list-sinks
1 sink(s) available.
  * index: 0
	name: <alsa_output.pci-0000_00_1f.3.analog-stereo>
	driver: <module-alsa-card.c>
	flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
	state: SUSPENDED
	suspend cause: APPLICATION|IDLE
	priority: 9039
	volume: front-left: 25891 /  40% / -24.20 dB,   front-right: 25891 /  40% / -24.20 dB
	        balance 0.00
	base volume: 65536 / 100% / 0.00 dB
	volume steps: 65537
	muted: no
	current latency: 0.00 ms
	max request: 0 KiB
	max rewind: 0 KiB
	monitor source: 0
	sample spec: s32le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 0
	linked by: 0
	configured latency: 0.00 ms; range is 0.50 .. 2000.00 ms
	card: 0 <alsa_card.pci-0000_00_1f.3>
	module: 6
	properties:
		alsa.resolution_bits = "32"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "ALC3266 Analog"
		alsa.id = "ALC3266 Analog"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xcc518000 irq 141"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1f.3"
		sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "a348"
		device.product.name = "Cannon Lake PCH cAVS"
		device.form_factor = "internal"
		device.string = "front:0"
		device.buffering.buffer_size = "705600"
		device.buffering.fragment_size = "352800"
		device.access_mode = "mmap+timer"
		device.profile.name = "analog-stereo"
		device.profile.description = "Analog Stereo"
		device.description = "Built-in Audio Analog Stereo"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	ports:
		analog-output-speaker: Speakers (priority 10000, latency offset 0 usec, available: unknown)
			properties:
				device.icon_name = "audio-speakers"
		analog-output-headphones: Headphones (priority 9900, latency offset 0 usec, available: unknown)
			properties:
				device.icon_name = "audio-headphones"
	active port: <analog-output-headphones>
>>> list-samples
0 cache entrie(s) available.
>>> ^C

Here’s ALSA information:

➜  ~ amixer --card=0 
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 127
  Mono: Playback 79 [62%] [-24.00dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 127
  Mono:
  Front Left: Playback 127 [100%] [0.00dB] [on]
  Front Right: Playback 127 [100%] [0.00dB] [on]
Simple mixer control 'Headphone Mic',0
  Capabilities: pvolume pswitch cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Playback channels: Front Left - Front Right
  Capture channels: Mono
  Limits: Playback 0 - 31
  Mono: Capture [off]
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Headphone Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Speaker',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 127
  Mono:
  Front Left: Playback 0 [0%] [-63.50dB] [off]
  Front Right: Playback 0 [0%] [-63.50dB] [off]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 254 [100%] [-0.20dB]
  Front Right: Playback 254 [100%] [-0.20dB]
Simple mixer control 'Mic Mute-LED Mode',0
  Capabilities: enum
  Items: 'On' 'Off' 'Follow Capture' 'Follow Mute'
  Item0: 'Follow Mute'
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'IEC958',1
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',2
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',3
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958',4
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 127
  Front Left: Capture 127 [100%] [30.00dB] [on]
  Front Right: Capture 127 [100%] [30.00dB] [on]
Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Disabled'
Simple mixer control 'Headset Mic',0
  Capabilities: pvolume pswitch cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Playback channels: Front Left - Front Right
  Capture channels: Mono
  Limits: Playback 0 - 31
  Mono: Capture [off]
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Headset Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Internal Mic',0
  Capabilities: cswitch cswitch-joined cswitch-exclusive
  Capture exclusive group: 0
  Capture channels: Mono
  Mono: Capture [on]
Simple mixer control 'Internal Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 2 [67%] [20.00dB]
  Front Right: 2 [67%] [20.00dB]
Simple mixer control 'Loopback Mixing',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Disabled'

I tested it again. Before opening up Firefox or Chrome, my audio works, and so does video. As soon as I open either of them, the problem occurs, and my audio doesn’t work anymore. VLC can still advance, though without audio; videos played on the browser can’t play.

My apologies for the inconsistent information as I’ve tested more things; I’ve edited my previous posts, as well as the title of this thread, in line with the new information. What can I do?

I thought, with the update, the issue was resolved; however, what happened was that if I opened Spotify before I opened Firefox, I could play music continuously up until I paused it (or perhaps up until I tried to play audio through Firefox; I did the latter immediately after the former, and I’m not sure which triggered it), at which point the issue would re-emerge.

Hello @ingridofcrows :wink:

So 2 applications cannot play sound at the same time? Seems bare ALSA is in use and not PulseAudio, since ALSA can only play sound for one application at the same time. Check your configs in your home folder.

Maybe create a new user account and test it there.

Hello, @megavolt

It was not, as far as I can understand, that two applications couldn’t play audio simultaneously; as I stopped playing from Spotify and started from Firefox, I couldn’t play anything at all, not even the video in Firefox. Indeed, if I closed the video tab in Firefox and pressed play in Spotify, it wouldn’t work; if I start Firefox first, then as soon as I start it, I lose audio as soon as I open it, regardless of whether or not I open a different app

Nevertheless, I’ll check the configuration files; what should I look for?

So the problem only happens with firefox? cleanup its profile: about:support

Thanks. It also happens with Chrome, but I don’t use that generally. Is there any particular field I should look for?

(I’ll post the about:support tomorrow morning, when back at the laptop)

Look for a file called asound.conf

Also check with pavucontrol if a sink is created when playing audio in firefox. If not then check if the service is running:

systemctl status --user pulseaudio

So, I tried to use Spotify, then turn on Firefox, then pause Spotify without playing audio in Firefox. Shortly after I paused Spotify, audio shut down, which means it was having Firefox open, rather than playing audio in Firefox, that was triggering the issue

Here’'s Firefox’s about:support

Application Basics
------------------

Name: Firefox
Version: 98.0.1
Build ID: 20220314212635
Distribution ID: Manjaro
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:98.0) Gecko/20100101 Firefox/98.0
OS: Linux 5.4.184-1-MANJARO #1 SMP PREEMPT Fri Mar 11 13:59:07 UTC 2022
OS Theme: Adapta-Nokto-Eta-Maia / Adwaita
Multiprocess Windows: 9/9
Fission Windows: 9/9 Enabled by default
Remote Processes: 16
Enterprise Policies: Inactive
Google Location Service Key: Found
Google Safebrowsing Key: Found
Mozilla Location Service Key: Found
Safe Mode: false

Crash Reports for the Last 3 Days
---------------------------------

Firefox Features
----------------

Name: DoH Roll-Out
Version: 2.0.0
ID: doh-rollout@mozilla.org

Name: Firefox Screenshots
Version: 39.0.1
ID: screenshots@mozilla.org

Name: Form Autofill
Version: 1.0.1
ID: formautofill@mozilla.org

Name: Picture-In-Picture
Version: 1.0.0
ID: pictureinpicture@mozilla.org

Name: Web Compatibility Interventions
Version: 30.0.0
ID: webcompat@mozilla.org

Name: WebCompat Reporter
Version: 1.4.2
ID: webcompat-reporter@mozilla.org

Remote Features
---------------

bug-1690367-rollout-moving-webrtc-networking-functionality-into-i-release-87-100: active
bug-1693420-rollout-sponsored-top-sites-rollout-release-84-100: active
rollout-increasing-normandy-skew-out-changes-from-15-m-release-73-75-bug-1616898: active

Remote Processes
----------------

Type: Privileged About
Count: 1

Type: Extension
Count: 1

Type: Isolated Service Worker
Count: 1

Type: Isolated Web Content
Count: 9

Type: Preallocated
Count: 3

Type: Socket
Count: 1

Add-ons
-------

Name: Add-ons Search Detection
Type: extension
Version: 2.0.0
Enabled: true
ID: addons-search-detection@mozilla.com

Name: Amazon.com
Type: extension
Version: 1.3
Enabled: true
ID: amazondotcom@search.mozilla.org

Name: Bing
Type: extension
Version: 1.3
Enabled: true
ID: bing@search.mozilla.org

Name: DuckDuckGo
Type: extension
Version: 1.1
Enabled: true
ID: ddg@search.mozilla.org

Name: eBay
Type: extension
Version: 1.3
Enabled: true
ID: ebay@search.mozilla.org

Name: Facebook Container
Type: extension
Version: 2.3.1
Enabled: true
ID: @contain-facebook

Name: Google
Type: extension
Version: 1.2
Enabled: true
ID: google@search.mozilla.org

Name: HTTPS Everywhere
Type: extension
Version: 2021.7.13
Enabled: true
ID: https-everywhere@eff.org

Name: minerBlock
Type: extension
Version: 1.2.16
Enabled: true
ID: xd4rker@gmail.com

Name: New XKit
Type: extension
Version: 7.9.2
Enabled: true
ID: @new-xkit

Name: Nord Theme
Type: extension
Version: 1.3
Enabled: true
ID: {26e789e7-acf2-4346-9381-ad473c245e43}

Name: Privacy Badger
Type: extension
Version: 2021.11.23.1
Enabled: true
ID: jid1-MnnxcxisBPnSXQ@jetpack

Name: Stylus
Type: extension
Version: 1.5.21
Enabled: true
ID: {7a7a4a92-a2a0-41d1-9fd7-1e92480d612d}

Name: uBlock Origin
Type: extension
Version: 1.41.8
Enabled: true
ID: uBlock0@raymondhill.net

Name: View Image
Type: extension
Version: 3.6.2
Enabled: true
ID: {287dcf75-bec6-4eec-b4f6-71948a2eea29}

Name: Wikipedia (en)
Type: extension
Version: 1.1
Enabled: true
ID: wikipedia@search.mozilla.org

Name: English (US) Language Pack
Type: locale
Version: 98.0.1buildid20220313.140707
Enabled: true
ID: langpack-en-US@firefox.mozilla.org

Name: Midnight Lizard
Type: extension
Version: 10.7.1
Enabled: false
ID: {8fbc7259-8015-4172-9af1-20e1edfbbd3a}

Name: Tree Style Tab
Type: extension
Version: 3.8.21
Enabled: false
ID: treestyletab@piro.sakura.ne.jp

Graphics
--------

Features
Compositing: WebRender
Asynchronous Pan/Zoom: wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled; smooth pinch-zoom enabled
WebGL 1 Driver WSI Info: EGL_VENDOR: Mesa Project EGL_VERSION: 1.5 EGL_EXTENSIONS: EGL_ANDROID_blob_cache EGL_ANDROID_native_fence_sync EGL_CHROMIUM_sync_control EGL_EXT_buffer_age EGL_EXT_create_context_robustness EGL_EXT_image_dma_buf_import EGL_EXT_image_dma_buf_import_modifiers EGL_EXT_swap_buffers_with_damage EGL_IMG_context_priority EGL_KHR_cl_event2 EGL_KHR_config_attribs EGL_KHR_create_context EGL_KHR_create_context_no_error EGL_KHR_fence_sync EGL_KHR_get_all_proc_addresses EGL_KHR_gl_colorspace EGL_KHR_gl_renderbuffer_image EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_3D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_image EGL_KHR_image_base EGL_KHR_image_pixmap EGL_KHR_no_config_context EGL_KHR_reusable_sync EGL_KHR_surfaceless_context EGL_KHR_swap_buffers_with_damage EGL_EXT_pixel_format_float EGL_KHR_wait_sync EGL_MESA_configless_context EGL_MESA_drm_image EGL_MESA_image_dma_buf_export EGL_MESA_query_driver EGL_NOK_texture_from_pixmap EGL_WL_bind_wayland_display EGL_EXTENSIONS(nullptr): EGL_EXT_device_base EGL_EXT_device_enumeration EGL_EXT_device_query EGL_EXT_platform_base EGL_KHR_client_get_all_proc_addresses EGL_EXT_client_extensions EGL_KHR_debug EGL_EXT_platform_device EGL_EXT_platform_wayland EGL_KHR_platform_wayland EGL_EXT_platform_x11 EGL_KHR_platform_x11 EGL_MESA_platform_xcb EGL_MESA_platform_gbm EGL_KHR_platform_gbm EGL_MESA_platform_surfaceless IsWebglOutOfProcessEnabled: 0
WebGL 1 Driver Renderer: Intel -- Mesa Intel(R) UHD Graphics 630 (CFL GT2)
WebGL 1 Driver Version: 4.6 (Compatibility Profile) Mesa 21.3.7
WebGL 1 Driver Extensions: GL_ARB_multisample GL_EXT_abgr GL_EXT_bgra GL_EXT_blend_color GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_copy_texture GL_EXT_subtexture GL_EXT_texture_object GL_EXT_vertex_array GL_EXT_compiled_vertex_array GL_EXT_texture GL_EXT_texture3D GL_IBM_rasterpos_clip GL_ARB_point_parameters GL_EXT_draw_range_elements GL_EXT_packed_pixels GL_EXT_point_parameters GL_EXT_rescale_normal GL_EXT_separate_specular_color GL_EXT_texture_edge_clamp GL_SGIS_generate_mipmap GL_SGIS_texture_border_clamp GL_SGIS_texture_edge_clamp GL_SGIS_texture_lod GL_ARB_framebuffer_sRGB GL_ARB_multitexture GL_EXT_framebuffer_sRGB GL_IBM_multimode_draw_arrays GL_IBM_texture_mirrored_repeat GL_3DFX_texture_compression_FXT1 GL_ARB_texture_cube_map GL_ARB_texture_env_add GL_ARB_transpose_matrix GL_EXT_blend_func_separate GL_EXT_fog_coord GL_EXT_multi_draw_arrays GL_EXT_secondary_color GL_EXT_texture_env_add GL_EXT_texture_filter_anisotropic GL_EXT_texture_lod_bias GL_INGR_blend_func_separate GL_NV_blend_square GL_NV_light_max_exponent GL_NV_texgen_reflection GL_NV_texture_env_combine4 GL_S3_s3tc GL_SUN_multi_draw_arrays GL_ARB_texture_border_clamp GL_ARB_texture_compression GL_EXT_framebuffer_object GL_EXT_texture_compression_s3tc GL_EXT_texture_env_combine GL_EXT_texture_env_dot3 GL_MESA_window_pos GL_NV_packed_depth_stencil GL_NV_texture_rectangle GL_ARB_depth_texture GL_ARB_occlusion_query GL_ARB_shadow GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_mirrored_repeat GL_ARB_window_pos GL_ATI_fragment_shader GL_EXT_stencil_two_side GL_EXT_texture_cube_map GL_NV_copy_depth_to_color GL_NV_depth_clamp GL_NV_fog_distance GL_NV_half_float GL_APPLE_packed_pixels GL_ARB_draw_buffers GL_ARB_fragment_program GL_ARB_fragment_shader GL_ARB_shader_objects GL_ARB_vertex_program GL_ARB_vertex_shader GL_ATI_draw_buffers GL_ATI_texture_env_combine3 GL_ATI_texture_float GL_EXT_shadow_funcs GL_EXT_stencil_wrap GL_MESA_pack_invert GL_NV_primitive_restart GL_ARB_depth_clamp GL_ARB_fragment_program_shadow GL_ARB_half_float_pixel GL_ARB_occlusion_query2 GL_ARB_point_sprite GL_ARB_shading_language_100 GL_ARB_sync GL_ARB_texture_non_power_of_two GL_ARB_vertex_buffer_object GL_ATI_blend_equation_separate GL_EXT_blend_equation_separate GL_OES_read_format GL_ARB_color_buffer_float GL_ARB_pixel_buffer_object GL_ARB_texture_compression_rgtc GL_ARB_texture_float GL_ARB_texture_rectangle GL_EXT_packed_float GL_EXT_pixel_buffer_object GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_rectangle GL_EXT_texture_sRGB GL_EXT_texture_shared_exponent GL_ARB_framebuffer_object GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXT_packed_depth_stencil GL_ARB_vertex_array_object GL_ATI_separate_stencil GL_EXT_draw_buffers2 GL_EXT_draw_instanced GL_EXT_gpu_program_parameters GL_EXT_gpu_shader4 GL_EXT_texture_array GL_EXT_texture_integer GL_EXT_texture_sRGB_decode GL_EXT_timer_query GL_OES_EGL_image GL_AMD_performance_monitor GL_EXT_texture_buffer_object GL_AMD_texture_texture4 GL_ARB_copy_buffer GL_ARB_depth_buffer_float GL_ARB_draw_instanced GL_ARB_half_float_vertex GL_ARB_instanced_arrays GL_ARB_map_buffer_range GL_ARB_texture_buffer_object GL_ARB_texture_rg GL_ARB_texture_swizzle GL_ARB_vertex_array_bgra GL_EXT_texture_swizzle GL_EXT_vertex_array_bgra GL_NV_conditional_render GL_AMD_conservative_depth GL_AMD_depth_clamp_separate GL_AMD_draw_buffers_blend GL_AMD_seamless_cubemap_per_texture GL_AMD_shader_stencil_export GL_ARB_ES2_compatibility GL_ARB_blend_func_extended GL_ARB_compatibility GL_ARB_debug_output GL_ARB_draw_buffers_blend GL_ARB_draw_elements_base_vertex GL_ARB_explicit_attrib_location GL_ARB_fragment_coord_conventions GL_ARB_provoking_vertex GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_seamless_cube_map GL_ARB_shader_stencil_export GL_ARB_shader_texture_lod GL_ARB_tessellation_shader GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_cube_map_array GL_ARB_texture_gather GL_ARB_texture_multisample GL_ARB_texture_query_lod GL_ARB_texture_rgb10_a2ui GL_ARB_uniform_buffer_object GL_ARB_vertex_type_2_10_10_10_rev GL_EXT_provoking_vertex GL_EXT_texture_snorm GL_MESA_texture_signed_rgba GL_NV_copy_image GL_NV_texture_barrier GL_ARB_draw_indirect GL_ARB_get_program_binary GL_ARB_gpu_shader5 GL_ARB_gpu_shader_fp64 GL_ARB_robustness GL_ARB_separate_shader_objects GL_ARB_shader_bit_encoding GL_ARB_shader_precision GL_ARB_shader_subroutine GL_ARB_texture_compression_bptc GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_vertex_attrib_64bit GL_ARB_viewport_array GL_EXT_direct_state_access GL_EXT_vertex_attrib_64bit GL_AMD_multi_draw_indirect GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ARB_base_instance GL_ARB_compressed_texture_pixel_storage GL_ARB_conservative_depth GL_ARB_internalformat_query GL_ARB_map_buffer_alignment GL_ARB_shader_atomic_counters GL_ARB_shader_image_load_store GL_ARB_shading_language_420pack GL_ARB_shading_language_packing GL_ARB_texture_storage GL_ARB_transform_feedback_instanced GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_transform_feedback GL_AMD_query_buffer_object GL_AMD_shader_trinary_minmax GL_AMD_vertex_shader_layer GL_AMD_vertex_shader_viewport_index GL_ARB_ES3_compatibility GL_ARB_arrays_of_arrays GL_ARB_clear_buffer_object GL_ARB_compute_shader GL_ARB_copy_image GL_ARB_explicit_uniform_location GL_ARB_fragment_layer_viewport GL_ARB_framebuffer_no_attachments GL_ARB_invalidate_subdata GL_ARB_multi_draw_indirect GL_ARB_program_interface_query GL_ARB_robust_buffer_access_behavior GL_ARB_shader_image_size GL_ARB_shader_storage_buffer_object GL_ARB_stencil_texturing GL_ARB_texture_buffer_range GL_ARB_texture_query_levels GL_ARB_texture_storage_multisample GL_ARB_texture_view GL_ARB_vertex_attrib_binding GL_KHR_debug GL_KHR_robustness GL_KHR_texture_compression_astc_ldr GL_AMD_pinned_memory GL_ARB_buffer_storage GL_ARB_clear_texture GL_ARB_compute_variable_group_size GL_ARB_enhanced_layouts GL_ARB_indirect_parameters GL_ARB_internalformat_query2 GL_ARB_multi_bind GL_ARB_query_buffer_object GL_ARB_seamless_cubemap_per_texture GL_ARB_shader_draw_parameters GL_ARB_shader_group_vote GL_ARB_shading_language_include GL_ARB_texture_mirror_clamp_to_edge GL_ARB_texture_stencil8 GL_ARB_vertex_type_10f_11f_11f_rev GL_EXT_shader_framebuffer_fetch GL_EXT_shader_integer_mix GL_INTEL_performance_query GL_ARB_ES3_1_compatibility GL_ARB_clip_control GL_ARB_conditional_render_inverted GL_ARB_cull_distance GL_ARB_derivative_control GL_ARB_direct_state_access GL_ARB_get_texture_sub_image GL_ARB_pipeline_statistics_query GL_ARB_shader_texture_image_samples GL_ARB_texture_barrier GL_ARB_transform_feedback_overflow_query GL_EXT_polygon_offset_clamp GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent GL_KHR_context_flush_control GL_KHR_robust_buffer_access_behavior GL_ARB_ES3_2_compatibility GL_ARB_fragment_shader_interlock GL_ARB_gpu_shader_int64 GL_ARB_parallel_shader_compile GL_ARB_post_depth_coverage GL_ARB_shader_atomic_counter_ops GL_ARB_shader_ballot GL_ARB_shader_clock GL_ARB_shader_viewport_layer_array GL_EXT_shader_samples_identical GL_EXT_texture_sRGB_R8 GL_KHR_no_error GL_KHR_texture_compression_astc_sliced_3d GL_NV_fragment_shader_interlock GL_ARB_gl_spirv GL_ARB_spirv_extensions GL_MESA_shader_integer_functions GL_ARB_polygon_offset_clamp GL_ARB_texture_filter_anisotropic GL_EXT_memory_object GL_EXT_memory_object_fd GL_EXT_semaphore GL_EXT_semaphore_fd GL_KHR_parallel_shader_compile GL_EXT_EGL_image_storage GL_EXT_shader_framebuffer_fetch_non_coherent GL_EXT_texture_shadow_lod GL_INTEL_blackhole_render GL_INTEL_shader_atomic_float_minmax GL_INTEL_shader_integer_functions2 GL_MESA_framebuffer_flip_y GL_NV_compute_shader_derivatives GL_EXT_EGL_sync GL_EXT_demote_to_helper_invocation
WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_element_index_uint OES_fbo_render_mipmap OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_astc WEBGL_compressed_texture_etc WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
WebGL 2 Driver WSI Info: EGL_VENDOR: Mesa Project EGL_VERSION: 1.5 EGL_EXTENSIONS: EGL_ANDROID_blob_cache EGL_ANDROID_native_fence_sync EGL_CHROMIUM_sync_control EGL_EXT_buffer_age EGL_EXT_create_context_robustness EGL_EXT_image_dma_buf_import EGL_EXT_image_dma_buf_import_modifiers EGL_EXT_swap_buffers_with_damage EGL_IMG_context_priority EGL_KHR_cl_event2 EGL_KHR_config_attribs EGL_KHR_create_context EGL_KHR_create_context_no_error EGL_KHR_fence_sync EGL_KHR_get_all_proc_addresses EGL_KHR_gl_colorspace EGL_KHR_gl_renderbuffer_image EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_3D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_image EGL_KHR_image_base EGL_KHR_image_pixmap EGL_KHR_no_config_context EGL_KHR_reusable_sync EGL_KHR_surfaceless_context EGL_KHR_swap_buffers_with_damage EGL_EXT_pixel_format_float EGL_KHR_wait_sync EGL_MESA_configless_context EGL_MESA_drm_image EGL_MESA_image_dma_buf_export EGL_MESA_query_driver EGL_NOK_texture_from_pixmap EGL_WL_bind_wayland_display EGL_EXTENSIONS(nullptr): EGL_EXT_device_base EGL_EXT_device_enumeration EGL_EXT_device_query EGL_EXT_platform_base EGL_KHR_client_get_all_proc_addresses EGL_EXT_client_extensions EGL_KHR_debug EGL_EXT_platform_device EGL_EXT_platform_wayland EGL_KHR_platform_wayland EGL_EXT_platform_x11 EGL_KHR_platform_x11 EGL_MESA_platform_xcb EGL_MESA_platform_gbm EGL_KHR_platform_gbm EGL_MESA_platform_surfaceless IsWebglOutOfProcessEnabled: 0
WebGL 2 Driver Renderer: Intel -- Mesa Intel(R) UHD Graphics 630 (CFL GT2)
WebGL 2 Driver Version: 4.6 (Core Profile) Mesa 21.3.7
WebGL 2 Driver Extensions: GL_3DFX_texture_compression_FXT1 GL_AMD_conservative_depth GL_AMD_depth_clamp_separate GL_AMD_draw_buffers_blend GL_AMD_gpu_shader_int64 GL_AMD_multi_draw_indirect GL_AMD_performance_monitor GL_AMD_pinned_memory GL_AMD_query_buffer_object GL_AMD_seamless_cubemap_per_texture GL_AMD_shader_stencil_export GL_AMD_shader_trinary_minmax GL_AMD_texture_texture4 GL_AMD_vertex_shader_layer GL_AMD_vertex_shader_viewport_index GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ARB_ES2_compatibility GL_ARB_ES3_1_compatibility GL_ARB_ES3_2_compatibility GL_ARB_ES3_compatibility GL_ARB_arrays_of_arrays GL_ARB_base_instance GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_compressed_texture_pixel_storage GL_ARB_compute_shader GL_ARB_compute_variable_group_size GL_ARB_conditional_render_inverted GL_ARB_conservative_depth GL_ARB_copy_buffer GL_ARB_copy_image GL_ARB_cull_distance GL_ARB_debug_output GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_derivative_control GL_ARB_direct_state_access GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_elements_base_vertex GL_ARB_draw_indirect GL_ARB_draw_instanced GL_ARB_enhanced_layouts GL_ARB_explicit_attrib_location GL_ARB_explicit_uniform_location GL_ARB_fragment_coord_conventions GL_ARB_fragment_layer_viewport GL_ARB_fragment_shader GL_ARB_fragment_shader_interlock GL_ARB_framebuffer_no_attachments GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_get_program_binary GL_ARB_get_texture_sub_image GL_ARB_gl_spirv GL_ARB_gpu_shader5 GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader_int64 GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_indirect_parameters GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_internalformat_query2 GL_ARB_invalidate_subdata GL_ARB_map_buffer_alignment GL_ARB_map_buffer_range GL_ARB_multi_bind GL_ARB_multi_draw_indirect GL_ARB_occlusion_query2 GL_ARB_parallel_shader_compile GL_ARB_pipeline_statistics_query GL_ARB_pixel_buffer_object GL_ARB_point_sprite GL_ARB_polygon_offset_clamp GL_ARB_post_depth_coverage GL_ARB_program_interface_query GL_ARB_provoking_vertex GL_ARB_query_buffer_object GL_ARB_robust_buffer_access_behavior GL_ARB_robustness GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_seamless_cube_map GL_ARB_seamless_cubemap_per_texture GL_ARB_separate_shader_objects GL_ARB_shader_atomic_counter_ops GL_ARB_shader_atomic_counters GL_ARB_shader_ballot GL_ARB_shader_bit_encoding GL_ARB_shader_clock GL_ARB_shader_draw_parameters GL_ARB_shader_group_vote GL_ARB_shader_image_load_store GL_ARB_shader_image_size GL_ARB_shader_objects GL_ARB_shader_precision GL_ARB_shader_stencil_export GL_ARB_shader_storage_buffer_object GL_ARB_shader_subroutine GL_ARB_shader_texture_image_samples GL_ARB_shader_texture_lod GL_ARB_shader_viewport_layer_array GL_ARB_shading_language_420pack GL_ARB_shading_language_include GL_ARB_shading_language_packing GL_ARB_spirv_extensions GL_ARB_stencil_texturing GL_ARB_sync GL_ARB_tessellation_shader GL_ARB_texture_barrier GL_ARB_texture_buffer_object GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_buffer_range GL_ARB_texture_compression_bptc GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map_array GL_ARB_texture_filter_anisotropic GL_ARB_texture_float GL_ARB_texture_gather GL_ARB_texture_mirror_clamp_to_edge GL_ARB_texture_multisample GL_ARB_texture_non_power_of_two GL_ARB_texture_query_levels GL_ARB_texture_query_lod GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_texture_rgb10_a2ui GL_ARB_texture_stencil8 GL_ARB_texture_storage GL_ARB_texture_storage_multisample GL_ARB_texture_swizzle GL_ARB_texture_view GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_transform_feedback_instanced GL_ARB_transform_feedback_overflow_query GL_ARB_uniform_buffer_object GL_ARB_vertex_array_bgra GL_ARB_vertex_array_object GL_ARB_vertex_attrib_64bit GL_ARB_vertex_attrib_binding GL_ARB_vertex_buffer_object GL_ARB_vertex_shader GL_ARB_vertex_type_10f_11f_11f_rev GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_ATI_blend_equation_separate GL_ATI_texture_float GL_EXT_EGL_image_storage GL_EXT_EGL_sync GL_EXT_abgr GL_EXT_blend_equation_separate GL_EXT_demote_to_helper_invocation GL_EXT_draw_buffers2 GL_EXT_draw_instanced GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_memory_object GL_EXT_memory_object_fd GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_pixel_buffer_object GL_EXT_polygon_offset_clamp GL_EXT_provoking_vertex GL_EXT_semaphore GL_EXT_semaphore_fd GL_EXT_shader_framebuffer_fetch GL_EXT_shader_framebuffer_fetch_non_coherent GL_EXT_shader_integer_mix GL_EXT_shader_samples_identical GL_EXT_texture_array GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc GL_EXT_texture_filter_anisotropic GL_EXT_texture_integer GL_EXT_texture_sRGB GL_EXT_texture_sRGB_R8 GL_EXT_texture_sRGB_decode GL_EXT_texture_shadow_lod GL_EXT_texture_shared_exponent GL_EXT_texture_snorm GL_EXT_texture_swizzle GL_EXT_timer_query GL_EXT_transform_feedback GL_EXT_vertex_array_bgra GL_EXT_vertex_attrib_64bit GL_IBM_multimode_draw_arrays GL_INTEL_blackhole_render GL_INTEL_conservative_rasterization GL_INTEL_performance_query GL_INTEL_shader_atomic_float_minmax GL_INTEL_shader_integer_functions2 GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent GL_KHR_context_flush_control GL_KHR_debug GL_KHR_no_error GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_KHR_robustness GL_KHR_texture_compression_astc_ldr GL_KHR_texture_compression_astc_sliced_3d GL_MESA_framebuffer_flip_y GL_MESA_pack_invert GL_MESA_shader_integer_functions GL_MESA_texture_signed_rgba GL_NV_compute_shader_derivatives GL_NV_conditional_render GL_NV_copy_image GL_NV_depth_clamp GL_NV_fragment_shader_interlock GL_NV_packed_depth_stencil GL_NV_texture_barrier GL_OES_EGL_image GL_S3_s3tc
WebGL 2 Extensions: EXT_color_buffer_float EXT_float_blend EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_texture_float_linear WEBGL_compressed_texture_astc WEBGL_compressed_texture_etc WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
Window Protocol: x11
Desktop Environment: xfce
Target Frame Rate: 60
GPU #1
Active: Yes
Description: Mesa Intel(R) UHD Graphics 630 (CFL GT2)
Vendor ID: 0x8086
Device ID: 0x3e9b
Driver Vendor: mesa/iris
Driver Version: 21.3.7.0
RAM: 0

Diagnostics
AzureCanvasBackend: skia
AzureContentBackend: skia
AzureFallbackCanvasBackend: skia
CMSOutputProfile: Empty profile data
Display0: 1920x1080
DisplayCount: 1
Decision Log
HW_COMPOSITING:
available by default
OPENGL_COMPOSITING:
available by default
WEBRENDER:
available by default
WEBRENDER_QUALIFIED:
available by default
WEBRENDER_COMPOSITOR:
disabled by default: Disabled by default
blocklisted by env: Blocklisted by gfxInfo
WEBRENDER_PARTIAL:
available by default
WEBRENDER_SHADER_CACHE:
disabled by default: Disabled by default
WEBRENDER_OPTIMIZED_SHADERS:
available by default
WEBRENDER_ANGLE:
available by default
unavailable by env: OS not supported
WEBRENDER_DCOMP_PRESENT:
available by default
disabled by user: User disabled via pref
unavailable by env: Requires Windows 10 or later
unavailable by runtime: Requires ANGLE
WEBRENDER_SOFTWARE:
available by default
WEBGPU:
disabled by default: Disabled by default
blocked by runtime: WebGPU can only be enabled in nightly
X11_EGL:
available by default
DMABUF:
available by default




Media
-----

Audio Backend: pulse-rust
Max Channels: 2
Preferred Sample Rate: 44100
Roundtrip latency (standard deviation): 31.20ms (0.00)
Output Devices
Name: Group
Built-in Audio Analog Stereo: /devices/pci0000:00/0000:00:1f.3/sound/card0
Input Devices
Name: Group
Monitor of Built-in Audio Analog Stereo: /devices/pci0000:00/0000:00:1f.3/sound/card0
Built-in Audio Analog Stereo: /devices/pci0000:00/0000:00:1f.3/sound/card0

Enumerate database

Environment Variables
---------------------

MOZ_PLUGIN_PATH: /usr/lib/mozilla/plugins
DISPLAY: :0.0
MOZ_ASSUME_USER_NS: 1
MOZ_CRASHREPORTER_EVENTS_DIRECTORY: /home/corvidium/.mozilla/firefox/0royjfdy.default-1587949410050/crashes/events
MOZ_CRASHREPORTER_RESTART_ARG_0: /usr/lib/firefox/firefox
MOZ_CRASHREPORTER_RESTART_ARG_1:
MOZ_CRASHREPORTER_DATA_DIRECTORY: /home/corvidium/.mozilla/firefox/Crash Reports
MOZ_CRASHREPORTER_PING_DIRECTORY: /home/corvidium/.mozilla/firefox/Pending Pings
MOZ_CRASHREPORTER_STRINGS_OVERRIDE: /usr/lib/firefox/browser/crashreporter-override.ini
MOZ_LAUNCHED_CHILD:
MOZ_APP_SILENT_START:
XRE_PROFILE_PATH:
XRE_PROFILE_LOCAL_PATH:
XRE_START_OFFLINE:
XRE_BINARY_PATH:
XRE_RESTARTED_BY_PROFILE_MANAGER:

Experimental Features
---------------------

about:home startup cache (browser.startup.homepage.abouthome_cache.enabled): false
Cookies: SameSite=Lax by default (network.cookie.sameSite.laxByDefault): false
Cookies: SameSite=None requires secure attribute (network.cookie.sameSite.noneRequiresSecure): false
Cookies: Schemeful SameSite (network.cookie.sameSite.schemeful): false
CSS: Constructable Stylesheets (layout.css.constructable-stylesheets.enabled): false
CSS: Masonry Layout (layout.css.grid-template-masonry-value.enabled): false
Developer Tools: Compatibility Panel (devtools.inspector.compatibility.enabled): true
Developer Tools: Service Worker debugging (devtools.debugger.features.windowless-service-workers): false
Firefox 100 User-Agent String (general.useragent.forceVersion100): false
Media: JPEG XL (image.jxl.enabled): false
Address Bar: show results during IME composition (browser.urlbar.keepPanelOpenDuringImeComposition): false
Web API: WebGPU (dom.webgpu.enabled): false
WebRTC Global Mute Toggles (privacy.webrtc.globalMuteToggles): false
Win32k Lockdown (security.sandbox.content.win32k-disable): false

Remote Experiments
------------------

Important Modified Preferences
------------------------------

accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.amount_written: 72116
browser.cache.disk.capacity: 1048576
browser.cache.disk.filesystem_reported: 1
browser.cache.disk.hashstats_reported: 1
browser.contentblocking.category: standard
browser.download.useDownloadDir: false
browser.search.region: US
browser.sessionstore.upgradeBackup.latestBuildID: 20220314212635
browser.sessionstore.warnOnQuit: true
browser.startup.homepage: about:home
browser.startup.homepage_override.buildID: 20220314212635
browser.startup.homepage_override.mstone: 98.0.1
browser.startup.page: 3
browser.tabs.warnOnClose: true
browser.urlbar.matchBuckets: general:5,suggestion:Infinity
browser.urlbar.placeholderName: DuckDuckGo
browser.urlbar.placeholderName.private: DuckDuckGo
browser.urlbar.quicksuggest.migrationVersion: 2
browser.urlbar.quicksuggest.scenario: offline
browser.urlbar.resultBuckets: {"children":[{"maxResultCount":1,"children":[{"group":"heuristicTest"},{"group":"heuristicExtension"},{"group":"heuristi
browser.urlbar.resultGroups: {"children":[{"maxResultCount":1,"children":[{"group":"heuristicTest"},{"group":"heuristicExtension"},{"group":"heuristi
browser.urlbar.showSearchSuggestionsFirst: false
browser.urlbar.suggest.quicksuggest.nonsponsored: false
browser.urlbar.suggest.quicksuggest.sponsored: false
browser.urlbar.tabToSearch.onboard.interactionsLeft: 0
browser.urlbar.tipShownCount.searchTip_onboard: 4
browser.urlbar.tipShownCount.searchTip_redirect: 4
browser.urlbar.tipShownCount.tabToSearch: 60
doh-rollout.balrog-migration-done: true
doh-rollout.doneFirstRun: true
doh-rollout.doorhanger-decision: UIOk
doh-rollout.doorhanger-shown: true
doh-rollout.home-region: US
doh-rollout.mode: 2
doh-rollout.self-enabled: true
doh-rollout.trr-selection.dry-run-result: https://mozilla.cloudflare-dns.com/dns-query
doh-rollout.uri: https://mozilla.cloudflare-dns.com/dns-query
dom.forms.autocomplete.formautofill: true
extensions.formautofill.addresses.usage.hasEntry: true
extensions.formautofill.creditCards.usage.dismissed: 1
extensions.formautofill.creditCards.used: 3
extensions.formautofill.firstTimeUse: false
extensions.lastAppVersion: 98.0.1
font.default.x-western: sans-serif
font.internaluseonly.changed: false
font.name.monospace.x-western: Iosevka
font.name.sans-serif.x-western: Helvetica World
font.name.serif.x-western: Helvetica World
idle.lastDailyNotification: 1647299074
media.benchmark.vp9.fps: 205
media.benchmark.vp9.versioncheck: 5
media.eme.enabled: true
media.gmp-gmpopenh264.abi: x86_64-gcc3
media.gmp-gmpopenh264.lastUpdate: 1587949605
media.gmp-gmpopenh264.version: 1.8.1.1
media.gmp-manager.buildID: 20220314212635
media.gmp-manager.lastCheck: 1647376435
media.gmp-widevinecdm.abi: x86_64-gcc3
media.gmp-widevinecdm.lastUpdate: 1637288202
media.gmp-widevinecdm.version: 4.10.2391.0
media.gmp.storage.version.observed: 1
media.videocontrols.picture-in-picture.video-toggle.has-used: true
network.dns.disablePrefetch: true
network.http.speculative-parallel-limit: 0
network.predictor.cleaned-up: true
network.predictor.enabled: false
network.prefetch-next: false
network.trr.blocklist_cleanup_done: true
places.database.lastMaintenance: 1647195850
places.history.expiration.transient_current_max_pages: 142212
privacy.cpd.cookies: false
privacy.cpd.downloads: false
privacy.cpd.formdata: false
privacy.cpd.history: false
privacy.cpd.sessions: false
privacy.purge_trackers.date_in_cookie_database: 0
privacy.purge_trackers.last_purge: 1647299074478
privacy.sanitize.pending: [{"id":"newtab-container","itemsToClear":[],"options":{}}]
privacy.userContext.enabled: true
privacy.userContext.extension: @contain-facebook
privacy.userContext.ui.enabled: true
security.remote_settings.crlite_filters.checked: 1647376871
security.remote_settings.intermediates.checked: 1647377047
security.sandbox.content.tempDirSuffix: 5d66b026-348c-46b7-99f3-a457f6db7ac4
security.sandbox.plugin.tempDirSuffix: fdef9bd0-0a35-4e85-8c2b-3f57f38b42bc
services.sync.declinedEngines:
services.sync.engine.addresses: true
services.sync.engine.addresses.available: true
services.sync.engine.creditcards: true
services.sync.engine.prefs.modified: false
services.sync.lastPing: 1647377529
services.sync.lastSync: Tue Mar 15 2022 20:49:17 GMT-0400 (Eastern Daylight Time)
signon.importedFromSqlite: true
signon.usage.hasEntry: true
signon.usage.lastUsed: 1608252712
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1646518693

Important Locked Preferences
----------------------------

fission.autostart.session: true

Places Database
---------------

Accessibility
-------------

Activated: false
Prevent Accessibility: 0

Library Versions
----------------

NSPR
Expected minimum version: 4.33
Version in use: 4.33

NSS
Expected minimum version: 3.76
Version in use: 3.76

NSSSMIME
Expected minimum version: 3.76
Version in use: 3.76

NSSSSL
Expected minimum version: 3.76
Version in use: 3.76

NSSUTIL
Expected minimum version: 3.76
Version in use: 3.76

Sandbox
-------

Seccomp-BPF (System Call Filtering): true
Seccomp Thread Synchronization: true
User Namespaces: true
Content Process Sandboxing: true
Media Plugin Sandboxing: true
Content Process Sandbox Level: 4
Effective Content Process Sandbox Level: 4
Win32k Lockdown State for Content Process: Win32k Lockdown disabled -- Operating system not supported

Rejected System Calls
---------------------

Startup Cache
-------------

Disk Cache Path: /home/corvidium/.cache/mozilla/firefox/0royjfdy.default-1587949410050/startupCache/startupCache.8.little
Ignore Disk Cache: false
Found Disk Cache on Init: true
Wrote to Disk Cache: false

Internationalization & Localization
-----------------------------------

Application Settings
Requested Locales: ["en-US"]
Available Locales: ["en-US"]
App Locales: ["en-US"]
Regional Preferences: ["en-US"]
Default Locale: "en-US"
Operating System
System Locales: ["en-US"]
Regional Preferences: ["en-US"]

Remote Debugging (Chromium Protocol)
------------------------------------

Accepting Connections: false
URL:

Printing
--------

Modified print settings
-----------------------

print_printer: Mozilla Save to PDF
print.more-settings.open: true
print.print_bgcolor: false
print.print_bgimages: false
print.print_duplex: 0
print.print_evenpages: true
print.print_margin_bottom: 0.5
print.print_margin_left: 0.5
print.print_margin_right: 0.5
print.print_margin_top: 0.5
print.print_oddpages: true
print.print_orientation: 0
print.print_page_delay: 50
print.print_paper_data: 0
print.print_paper_height: 11.00
print.print_paper_name: na_letter
print.print_paper_size_unit: 0
print.print_paper_width: 8.50
print.print_scaling: 1.00
print.print_shrink_to_fit: true
print.print_to_file: false
print.print_unwriteable_margin_bottom: 56
print.print_unwriteable_margin_left: 25
print.print_unwriteable_margin_right: 25
print.print_unwriteable_margin_top: 25
print.printer_Brother-HL-L2390DW.print_bgcolor: false
print.printer_Brother-HL-L2390DW.print_bgimages: false
print.printer_Brother-HL-L2390DW.print_duplex: 1
print.printer_Brother-HL-L2390DW.print_edge_bottom: 0
print.printer_Brother-HL-L2390DW.print_edge_left: 0
print.printer_Brother-HL-L2390DW.print_edge_right: 0
print.printer_Brother-HL-L2390DW.print_edge_top: 0
print.printer_Brother-HL-L2390DW.print_footercenter:
print.printer_Brother-HL-L2390DW.print_footerleft: &PT
print.printer_Brother-HL-L2390DW.print_footerright: &D
print.printer_Brother-HL-L2390DW.print_headercenter:
print.printer_Brother-HL-L2390DW.print_headerleft: &T
print.printer_Brother-HL-L2390DW.print_headerright: &U
print.printer_Brother-HL-L2390DW.print_in_color: false
print.printer_Brother-HL-L2390DW.print_margin_bottom: 0.5
print.printer_Brother-HL-L2390DW.print_margin_left: 0.5
print.printer_Brother-HL-L2390DW.print_margin_right: 0.5
print.printer_Brother-HL-L2390DW.print_margin_top: 0.5
print.printer_Brother-HL-L2390DW.print_orientation: 0
print.printer_Brother-HL-L2390DW.print_page_delay: 50
print.printer_Brother-HL-L2390DW.print_paper_height: 11
print.printer_Brother-HL-L2390DW.print_paper_id: na_letter_8.5x11in
print.printer_Brother-HL-L2390DW.print_paper_size_unit: 0
print.printer_Brother-HL-L2390DW.print_paper_width: 8.5
print.printer_Brother-HL-L2390DW.print_resolution: 0
print.printer_Brother-HL-L2390DW.print_reversed: false
print.printer_Brother-HL-L2390DW.print_scaling: 1
print.printer_Brother-HL-L2390DW.print_shrink_to_fit: true
print.printer_Brother-HL-L2390DW.print_to_file: false
print.printer_Brother-HL-L2390DW.print_unwriteable_margin_bottom: 17
print.printer_Brother-HL-L2390DW.print_unwriteable_margin_left: 17
print.printer_Brother-HL-L2390DW.print_unwriteable_margin_right: 17
print.printer_Brother-HL-L2390DW.print_unwriteable_margin_top: 17
print.printer_Mozilla_Save_to_PDF.print_bgcolor: false
print.printer_Mozilla_Save_to_PDF.print_bgimages: false
print.printer_Mozilla_Save_to_PDF.print_duplex: 0
print.printer_Mozilla_Save_to_PDF.print_edge_bottom: 0
print.printer_Mozilla_Save_to_PDF.print_edge_left: 0
print.printer_Mozilla_Save_to_PDF.print_edge_right: 0
print.printer_Mozilla_Save_to_PDF.print_edge_top: 0
print.printer_Mozilla_Save_to_PDF.print_footercenter:
print.printer_Mozilla_Save_to_PDF.print_footerleft: &PT
print.printer_Mozilla_Save_to_PDF.print_footerright: &D
print.printer_Mozilla_Save_to_PDF.print_headercenter:
print.printer_Mozilla_Save_to_PDF.print_headerleft: &T
print.printer_Mozilla_Save_to_PDF.print_headerright: &U
print.printer_Mozilla_Save_to_PDF.print_in_color: true
print.printer_Mozilla_Save_to_PDF.print_margin_bottom: 0.5
print.printer_Mozilla_Save_to_PDF.print_margin_left: 0.5
print.printer_Mozilla_Save_to_PDF.print_margin_right: 0.5
print.printer_Mozilla_Save_to_PDF.print_margin_top: 0.5
print.printer_Mozilla_Save_to_PDF.print_orientation: 0
print.printer_Mozilla_Save_to_PDF.print_page_delay: 50
print.printer_Mozilla_Save_to_PDF.print_paper_height: 11
print.printer_Mozilla_Save_to_PDF.print_paper_id: na_letter
print.printer_Mozilla_Save_to_PDF.print_paper_size_unit: 0
print.printer_Mozilla_Save_to_PDF.print_paper_width: 8.5
print.printer_Mozilla_Save_to_PDF.print_reversed: false
print.printer_Mozilla_Save_to_PDF.print_scaling: 1
print.printer_Mozilla_Save_to_PDF.print_shrink_to_fit: true
print.printer_Mozilla_Save_to_PDF.print_to_file: true
print.printer_Mozilla_Save_to_PDF.print_unwriteable_margin_bottom_twips: 0
print.printer_Mozilla_Save_to_PDF.print_unwriteable_margin_left_twips: 0
print.printer_Mozilla_Save_to_PDF.print_unwriteable_margin_right_twips: 0
print.printer_Mozilla_Save_to_PDF.print_unwriteable_margin_top_twips: 0
print.printer_Print_to_File.print_bgcolor: false
print.printer_Print_to_File.print_bgimages: false
print.printer_Print_to_File.print_duplex: 0
print.printer_Print_to_File.print_edge_bottom: 0
print.printer_Print_to_File.print_edge_left: 0
print.printer_Print_to_File.print_edge_right: 0
print.printer_Print_to_File.print_edge_top: 0
print.printer_Print_to_File.print_evenpages: true
print.printer_Print_to_File.print_footercenter:
print.printer_Print_to_File.print_footerleft: &PT
print.printer_Print_to_File.print_footerright: &D
print.printer_Print_to_File.print_headercenter:
print.printer_Print_to_File.print_headerleft: &T
print.printer_Print_to_File.print_headerright: &U
print.printer_Print_to_File.print_in_color: true
print.printer_Print_to_File.print_margin_bottom: 0.5
print.printer_Print_to_File.print_margin_left: 0.5
print.printer_Print_to_File.print_margin_right: 0.5
print.printer_Print_to_File.print_margin_top: 0.5
print.printer_Print_to_File.print_oddpages: true
print.printer_Print_to_File.print_orientation: 0
print.printer_Print_to_File.print_page_delay: 50
print.printer_Print_to_File.print_paper_height: 11
print.printer_Print_to_File.print_paper_id: na_letter
print.printer_Print_to_File.print_paper_size_unit: 0
print.printer_Print_to_File.print_paper_width: 8.5
print.printer_Print_to_File.print_reversed: false
print.printer_Print_to_File.print_scaling: 1
print.printer_Print_to_File.print_shrink_to_fit: true
print.printer_Print_to_File.print_to_file: false
print.printer_Print_to_File.print_unwriteable_margin_bottom: 0
print.printer_Print_to_File.print_unwriteable_margin_left: 0
print.printer_Print_to_File.print_unwriteable_margin_right: 0
print.printer_Print_to_File.print_unwriteable_margin_top: 0

Here’s .asoundrc in my home folder:

pcm.!default {
    type plug
    slave { pcm "pulse" }
}

pcm.pulse {
    type pulse
}

ctl.mixer0 {
    type hw
    card 0
}

I don’t have an /etc/asound.conf, but here’s /usr/share/alsa/alsa.conf

#
#  ALSA library configuration file
#

# pre-load the configuration files

@hooks [
	{
		func load
		files [
			"/var/lib/alsa/conf.d"
			"/usr/etc/alsa/conf.d"
			"/etc/alsa/conf.d"
			"/etc/asound.conf|||/usr/etc/asound.conf"
			"~/.asoundrc"
			{
				@func concat
				strings [
					{
						@func getenv
						vars [
							XDG_CONFIG_HOME
						]
						default "~/.config"
					}
					"/alsa/asoundrc"
				]
			}
		]
		errors false
	}
]

# load card-specific configuration files (on request)

cards.@hooks [
	{
		func load
		files [
			{
				@func concat
				strings [
					{ @func datadir }
					"/cards/aliases.conf"
				]
			}
		]
	}
	{
		func load_for_all_cards
		files [
			{
				@func concat
				strings [
					{ @func datadir }
					"/cards/"
					{ @func private_string }
					".conf"
				]
			}
			{
				root {
					@func private_integer
				}
				file {
					@func concat
					strings [
						"/var/lib/alsa/card"
						{ @func private_integer }
						".conf.d"
					]
				}
			}
		]
		table {
			id {
				@func concat
				strings [
					{ @func private_integer }
				]
			}
			value {
				@func concat
				strings [
					"cards."
					{ @func private_string }
				]
			}
		}
		errors false
	}
]

#
# defaults
#

# show all name hints also for definitions without hint {} section
defaults.namehint.showall off
# show just basic name hints
defaults.namehint.basic on
# show extended name hints
defaults.namehint.extended off
#
defaults.ctl.card 0
defaults.pcm.card 0
defaults.pcm.device 0
defaults.pcm.subdevice -1
defaults.pcm.nonblock 1
defaults.pcm.compat 0
defaults.pcm.minperiodtime 5000		# in us
defaults.pcm.ipc_key 5678293
defaults.pcm.ipc_gid audio
defaults.pcm.ipc_perm 0660
defaults.pcm.tstamp_type default
defaults.pcm.dmix.max_periods 0
defaults.pcm.dmix.channels 2
defaults.pcm.dmix.rate 48000
defaults.pcm.dmix.format unchanged
defaults.pcm.dmix.card defaults.pcm.card
defaults.pcm.dmix.device defaults.pcm.device
defaults.pcm.dsnoop.card defaults.pcm.card
defaults.pcm.dsnoop.device defaults.pcm.device
defaults.pcm.front.card defaults.pcm.card
defaults.pcm.front.device defaults.pcm.device
defaults.pcm.rear.card defaults.pcm.card
defaults.pcm.rear.device defaults.pcm.device
defaults.pcm.center_lfe.card defaults.pcm.card
defaults.pcm.center_lfe.device defaults.pcm.device
defaults.pcm.side.card defaults.pcm.card
defaults.pcm.side.device defaults.pcm.device
defaults.pcm.surround21.card defaults.pcm.card
defaults.pcm.surround21.device defaults.pcm.device
defaults.pcm.surround40.card defaults.pcm.card
defaults.pcm.surround40.device defaults.pcm.device
defaults.pcm.surround41.card defaults.pcm.card
defaults.pcm.surround41.device defaults.pcm.device
defaults.pcm.surround50.card defaults.pcm.card
defaults.pcm.surround50.device defaults.pcm.device
defaults.pcm.surround51.card defaults.pcm.card
defaults.pcm.surround51.device defaults.pcm.device
defaults.pcm.surround71.card defaults.pcm.card
defaults.pcm.surround71.device defaults.pcm.device
defaults.pcm.iec958.card defaults.pcm.card
defaults.pcm.iec958.device defaults.pcm.device
defaults.pcm.modem.card defaults.pcm.card
defaults.pcm.modem.device defaults.pcm.device
defaults.pcm.file_format raw
defaults.pcm.file_truncate true		# truncate files via file or tee PCM
defaults.rawmidi.card 0
defaults.rawmidi.device 0
defaults.rawmidi.subdevice -1
defaults.hwdep.card 0
defaults.hwdep.device 0
defaults.timer.class 2
defaults.timer.sclass 0
defaults.timer.card 0
defaults.timer.device 0
defaults.timer.subdevice 0

#
#  PCM interface
#

pcm.hw {
	@args [ CARD DEV SUBDEV ]
	@args.CARD {
		type string
		default {
			@func getenv
			vars [
				ALSA_PCM_CARD
				ALSA_CARD
			]
			default {
				@func refer
				name defaults.pcm.card
			}
		}
	}
	@args.DEV {
		type integer
		default {
			@func igetenv
			vars [
				ALSA_PCM_DEVICE
			]
			default {
				@func refer
				name defaults.pcm.device
			}
		}
	}
	@args.SUBDEV {
		type integer
		default {
			@func refer
			name defaults.pcm.subdevice
		}
	}		
	type hw
	card $CARD
	device $DEV
	subdevice $SUBDEV
	hint {
		show {
			@func refer
			name defaults.namehint.extended
		}
		description "Direct hardware device without any conversions"
	}
}

pcm.plughw {
	@args [ CARD DEV SUBDEV ]
	@args.CARD {
		type string
		default {
			@func getenv
			vars [
				ALSA_PCM_CARD
				ALSA_CARD
			]
			default {
				@func refer
				name defaults.pcm.card
			}
		}
	}
	@args.DEV {
		type integer
		default {
			@func igetenv
			vars [
				ALSA_PCM_DEVICE
			]
			default {
				@func refer
				name defaults.pcm.device
			}
		}
	}
	@args.SUBDEV {
		type integer
		default {
			@func refer
			name defaults.pcm.subdevice
		}
	}		
	type plug
	slave.pcm {
		type hw
		card $CARD
		device $DEV
		subdevice $SUBDEV
	}
	hint {
		show {
			@func refer
			name defaults.namehint.extended
		}
		description "Hardware device with all software conversions"
	}
}

pcm.plug {
	@args [ SLAVE ]
	@args.SLAVE {
		type string
	}
	type plug
	slave.pcm $SLAVE
}

pcm.shm {
	@args [ SOCKET PCM ]
	@args.SOCKET {
		type string
	}
	@args.PCM {
		type string
	}
	type shm
	server $SOCKET
	pcm $PCM
}

pcm.tee {
	@args [ SLAVE FILE FORMAT ]
	@args.SLAVE {
		type string
	}
	@args.FILE {
		type string
	}
	@args.FORMAT {
		type string
		default {
			@func refer
			name defaults.pcm.file_format
		}
	}
	type file
	slave.pcm $SLAVE
	file $FILE
	format $FORMAT
	truncate {
		@func refer
		name defaults.pcm.file_truncate
	}
}

pcm.file {
	@args [ FILE FORMAT ]
	@args.FILE {
		type string
	}
	@args.FORMAT {
		type string
		default {
			@func refer
			name defaults.pcm.file_format
		}
	}
	type file
	slave.pcm null
	file $FILE
	format $FORMAT
	truncate {
		@func refer
		name defaults.pcm.file_truncate
	}
}

pcm.null {
	type null
	hint {
		show {
			@func refer
			name defaults.namehint.basic
		}
		description "Discard all samples (playback) or generate zero samples (capture)"
	}
}

# redirect to load-on-demand extended pcm definitions
pcm.cards cards.pcm

pcm.default cards.pcm.default
pcm.sysdefault cards.pcm.default
pcm.front cards.pcm.front
pcm.rear cards.pcm.rear
pcm.center_lfe cards.pcm.center_lfe
pcm.side cards.pcm.side
pcm.surround21 cards.pcm.surround21
pcm.surround40 cards.pcm.surround40
pcm.surround41 cards.pcm.surround41
pcm.surround50 cards.pcm.surround50
pcm.surround51 cards.pcm.surround51
pcm.surround71 cards.pcm.surround71
pcm.iec958 cards.pcm.iec958
pcm.spdif iec958
pcm.hdmi cards.pcm.hdmi
pcm.dmix cards.pcm.dmix
pcm.dsnoop cards.pcm.dsnoop
pcm.modem cards.pcm.modem
pcm.phoneline cards.pcm.phoneline

#
#  Control interface
#
	
ctl.default cards.ctl.default
ctl.sysdefault cards.ctl.default

ctl.hw {
	@args [ CARD ]
	@args.CARD {
		type string
		default {
			@func getenv
			vars [
				ALSA_CTL_CARD
				ALSA_CARD
			]
			default {
				@func refer
				name defaults.ctl.card
			}
		}
	}
	type hw
	card $CARD
	hint.description "Direct control device"
}

ctl.shm {
	@args [ SOCKET CTL ]
	@args.SOCKET {
		type string
	}
	@args.CTL {
		type string
	}
	type shm
	server $SOCKET
	ctl $CTL
}

#
#  RawMidi interface
#

rawmidi.default {
	type hw
	card {
		@func getenv
		vars [
			ALSA_RAWMIDI_CARD
			ALSA_CARD
		]
		default {
			@func refer
			name defaults.rawmidi.card
		}
	}
	device {
		@func igetenv
		vars [
			ALSA_RAWMIDI_DEVICE
		]
		default {
			@func refer
			name defaults.rawmidi.device
		}
	}
	hint.description "Default raw MIDI device"
}

rawmidi.hw {
	@args [ CARD DEV SUBDEV ]
	@args.CARD {
		type string
		default {
			@func getenv
			vars [
				ALSA_RAWMIDI_CARD
				ALSA_CARD
			]
			default {
				@func refer
				name defaults.rawmidi.card
			}
		}
	}
	@args.DEV {
		type integer
		default {
			@func igetenv
			vars [
				ALSA_RAWMIDI_DEVICE
			]
			default {
				@func refer
				name defaults.rawmidi.device
			}
		}
	}
	@args.SUBDEV {
		type integer
		default -1
	}
	type hw
	card $CARD
	device $DEV
	subdevice $SUBDEV
	hint {
		description "Direct rawmidi driver device"
		device $DEV
	}
}

rawmidi.virtual {
	@args [ MERGE ]
	@args.MERGE {
		type string
		default 1
	}
	type virtual
	merge $MERGE
}

#
#  Sequencer interface
#

seq.default {
	type hw
	hint.description "Default sequencer device"
}

seq.hw {
	type hw
}

#
#  HwDep interface
#

hwdep.default {
	type hw
	card {
		@func getenv
		vars [
			ALSA_HWDEP_CARD
			ALSA_CARD
		]
		default {
			@func refer
			name defaults.hwdep.card
		}
	}
	device {
		@func igetenv
		vars [
			ALSA_HWDEP_DEVICE
		]
		default {
			@func refer
			name defaults.hwdep.device
		}
	}
	hint.description "Default hardware dependent device"
}

hwdep.hw {
	@args [ CARD DEV ]
	@args.CARD {
		type string
		default {
			@func getenv
			vars [
				ALSA_HWDEP_CARD
				ALSA_CARD
			]
			default {
				@func refer
				name defaults.hwdep.card
			}
		}
	}
	@args.DEV {
		type integer
		default {
			@func igetenv
			vars [
				ALSA_HWDEP_DEVICE
			]
			default {
				@func refer
				name defaults.hwdep.device
			}
		}
	}
	type hw
	card $CARD
	device $DEV
	hint {
		description "Direct hardware dependent device"
		device $DEV
	}
}

#
#  Timer interface
#

timer_query.default {
	type hw
}

timer_query.hw {
	type hw
}

timer.default {
	type hw
	class {
		@func refer
		name defaults.timer.class
	}
	sclass {
		@func refer
		name defaults.timer.sclass
	}
	card {
		@func refer
		name defaults.timer.card
	}
	device {
		@func refer
		name defaults.timer.device
	}
	subdevice {
		@func refer
		name defaults.timer.subdevice
	}
	hint.description "Default timer device"
}

timer.hw {
	@args [ CLASS SCLASS CARD DEV SUBDEV ]
	@args.CLASS {
		type integer
		default {
			@func refer
			name defaults.timer.class
		}
	}
	@args.SCLASS {
		type integer
		default {
			@func refer
			name defaults.timer.sclass
		}
	}
	@args.CARD {
		type string
		default {
			@func refer
			name defaults.timer.card
		}
	}
	@args.DEV {
		type integer
		default {
			@func refer
			name defaults.timer.device
		}
	}
	@args.SUBDEV {
		type integer
		default {
			@func refer
			name defaults.timer.subdevice
		}
	}
	type hw
	class $CLASS
	sclass $SCLASS
	card $CARD
	device $DEV
	subdevice $SUBDEV
	hint {
		description "Direct timer device"
		device $DEV
	}
}

When I later try to play audio in Firefox, a sink is created in pavucontrol:

Is there any other information that could be of use? What should I do?

If a system is using software sound server PulseAudio, changing ALSA configuration /etc/asound.conf or creating custom user configuration .asoundrc should not be necessary

ALSA configuration to use PulseAudio as default sound server is usually provided by package pulseaudio-alsa with file /usr/share/alsa/alsa.conf.d/99-pulseaudio-default.conf:

# Default to PulseAudio

pcm.!default {
    type pulse
    fallback "sysdefault"
    hint {
        show on
        description "Default ALSA Output (currently PulseAudio Sound Server)"
    }
}

ctl.!default {
    type pulse
    fallback "sysdefault"
}

I suggest you remove file ~/.asoundrc to allow pulseaudio-alsa configuration

When I later try to play audio in Firefox, a sink is created in pavucontrol:

Check what audio sinks are available in pavucontrol Output Devices tab
or post more information about PulseAudio sinks in text format

pacmd list-sinks

It might also help to check audio stream information from Firefox and Spotify

pacmd list-sink-inputs

So, I installed some updates (network manager &c), and tried to play audio simultaneously on Spotify and Firefox, and it worked (I don’t know if this is a temporary thing, for example, the possibility that if I pause for long enough, the error will re-emerge; so far, though, my attempts to pause one and play the other for a while, or pause both, have not caused any problems like they used to). My /usr/share/alsa/alsa.conf.d/99-pulseaudio-default.conf is as you shared, @nikgnomic. After posting this, I will move .asoundrc to a different file, and I’ll update upon reboot.

Now that audio is playing, my output devices tab looks like this (when it doesn’t work, the bar below the volume meter is always empty)

➜  ~ pacmd list-sinks
1 sink(s) available.
  * index: 0
	name: <alsa_output.pci-0000_00_1f.3.analog-stereo>
	driver: <module-alsa-card.c>
	flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
	state: RUNNING
	suspend cause: (none)
	priority: 9039
	volume: front-left: 28706 /  44% / -21.51 dB,   front-right: 28706 /  44% / -21.51 dB
	        balance 0.00
	base volume: 65536 / 100% / 0.00 dB
	volume steps: 65537
	muted: no
	current latency: 40.22 ms
	max request: 15 KiB
	max rewind: 15 KiB
	monitor source: 0
	sample spec: s32le 2ch 48000Hz
	channel map: front-left,front-right
	             Stereo
	used by: 2
	linked by: 5
	configured latency: 40.00 ms; range is 0.50 .. 1837.50 ms
	card: 0 <alsa_card.pci-0000_00_1f.3>
	module: 6
	properties:
		alsa.resolution_bits = "32"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "ALC3266 Analog"
		alsa.id = "ALC3266 Analog"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xcc518000 irq 141"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1f.3"
		sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "a348"
		device.product.name = "Cannon Lake PCH cAVS"
		device.form_factor = "internal"
		device.string = "front:0"
		device.buffering.buffer_size = "705600"
		device.buffering.fragment_size = "352800"
		device.access_mode = "mmap+timer"
		device.profile.name = "analog-stereo"
		device.profile.description = "Analog Stereo"
		device.description = "Built-in Audio Analog Stereo"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	ports:
		analog-output-speaker: Speakers (priority 10000, latency offset 0 usec, available: unknown)
			properties:
				device.icon_name = "audio-speakers"
		analog-output-headphones: Headphones (priority 9900, latency offset 0 usec, available: unknown)
			properties:
				device.icon_name = "audio-headphones"
	active port: <analog-output-headphones>
➜  ~ pacmd list-sink-inputs
2 sink input(s) available.
    index: 1
	driver: <protocol-native.c>
	flags: START_CORKED 
	state: RUNNING
	sink: 0 <alsa_output.pci-0000_00_1f.3.analog-stereo>
	volume: front-left: 57670 /  88% / -3.33 dB,   front-right: 57670 /  88% / -3.33 dB
	        balance 0.00
	muted: no
	current latency: 925.17 ms
	requested latency: 980.00 ms
	sample spec: float32le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	resample method: speex-float-1
	module: 12
	client: 7 <Spotify>
	properties:
		media.role = "music"
		media.name = "Spotify"
		application.name = "Spotify"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "35"
		application.process.id = "27215"
		application.process.user = "corvidium"
		application.process.host = "Wintermute"
		application.process.binary = "spotify"
		application.language = "en_US.utf8"
		window.x11.display = ":0.0"
		application.process.machine_id = "89ae376d574e4fadac30ec9286a95995"
		application.process.session_id = "2"
		application.icon_name = "spotify-client"
		module-stream-restore.id = "sink-input-by-media-role:music"
    index: 3
	driver: <protocol-native.c>
	flags: START_CORKED 
	state: RUNNING
	sink: 0 <alsa_output.pci-0000_00_1f.3.analog-stereo>
	volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
	        balance 0.00
	muted: no
	current latency: 98.33 ms
	requested latency: 75.00 ms
	sample spec: float32le 2ch 48000Hz
	channel map: front-left,front-right
	             Stereo
	resample method: copy
	module: 12
	client: 8 <Firefox>
	properties:
		media.name = "AudioStream"
		application.name = "Firefox"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "35"
		application.process.id = "46067"
		application.process.user = "corvidium"
		application.process.host = "Wintermute"
		application.process.binary = "firefox"
		application.language = "en_US.utf8"
		window.x11.display = ":0.0"
		application.process.machine_id = "89ae376d574e4fadac30ec9286a95995"
		application.process.session_id = "2"
		application.icon_name = "firefox"
		module-stream-restore.id = "sink-input-by-application-name:Firefox"
➜  ~ 

The problem re-emerged without a clear trigger; I had Firefox open (but wasn’t playing audio through it), then paused Spotify, then the error returned (the sign of this being that the headphones suddenly appeared muted and with a low volume in pavucontrol, but unmuting and raising the volume did nothing to allow the audio to play; Spotify could not advance).
I have yet to reboot, so perhaps deleting .asoundrc would work.

➜  ~ pacmd list-sinks      
1 sink(s) available.
  * index: 0
	name: <alsa_output.pci-0000_00_1f.3.analog-stereo>
	driver: <module-alsa-card.c>
	flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
	state: SUSPENDED
	suspend cause: APPLICATION
	priority: 9039
	volume: front-left: 28725 /  44% / -21.49 dB,   front-right: 28725 /  44% / -21.49 dB
	        balance 0.00
	base volume: 65536 / 100% / 0.00 dB
	volume steps: 65537
	muted: no
	current latency: 0.00 ms
	max request: 0 KiB
	max rewind: 0 KiB
	monitor source: 0
	sample spec: s32le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 0
	linked by: 3
	configured latency: 0.00 ms; range is 0.50 .. 1837.50 ms
	card: 0 <alsa_card.pci-0000_00_1f.3>
	module: 6
	properties:
		alsa.resolution_bits = "32"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "ALC3266 Analog"
		alsa.id = "ALC3266 Analog"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "0"
		alsa.card_name = "HDA Intel PCH"
		alsa.long_card_name = "HDA Intel PCH at 0xcc518000 irq 141"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:00:1f.3"
		sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
		device.bus = "pci"
		device.vendor.id = "8086"
		device.vendor.name = "Intel Corporation"
		device.product.id = "a348"
		device.product.name = "Cannon Lake PCH cAVS"
		device.form_factor = "internal"
		device.string = "front:0"
		device.buffering.buffer_size = "705600"
		device.buffering.fragment_size = "352800"
		device.access_mode = "mmap+timer"
		device.profile.name = "analog-stereo"
		device.profile.description = "Analog Stereo"
		device.description = "Built-in Audio Analog Stereo"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	ports:
		analog-output-speaker: Speakers (priority 10000, latency offset 0 usec, available: unknown)
			properties:
				device.icon_name = "audio-speakers"
		analog-output-headphones: Headphones (priority 9900, latency offset 0 usec, available: unknown)
			properties:
				device.icon_name = "audio-headphones"
	active port: <analog-output-headphones>
➜  ~ pacmd list-sink-inputs
1 sink input(s) available.
    index: 1
	driver: <protocol-native.c>
	flags: START_CORKED 
	state: CORKED
	sink: 0 <alsa_output.pci-0000_00_1f.3.analog-stereo>
	volume: front-left: 57670 /  88% / -3.33 dB,   front-right: 57670 /  88% / -3.33 dB
	        balance 0.00
	muted: no
	current latency: 1908.25 ms
	requested latency: 980.00 ms
	sample spec: float32le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	resample method: copy
	module: 12
	client: 7 <Spotify>
	properties:
		media.role = "music"
		media.name = "Spotify"
		application.name = "Spotify"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "35"
		application.process.id = "27215"
		application.process.user = "corvidium"
		application.process.host = "Wintermute"
		application.process.binary = "spotify"
		application.language = "en_US.utf8"
		window.x11.display = ":0.0"
		application.process.machine_id = "89ae376d574e4fadac30ec9286a95995"
		application.process.session_id = "2"
		application.icon_name = "spotify-client"
		module-stream-restore.id = "sink-input-by-media-role:music"

I rebooted, opened Firefox, and the problem recurred; deleting .asoundrc didn’t solve it

Here’s the result of alsamixer -c 0 by the way. I don’t know the significance of this

Does it only happen with spotify? If so, then I assume a bug there, but then there is not much we can do. Contact the spotify support in this case.

you can try to restart pulseaudio when it happens:

systemctl restart --user pulseaudio.service

It also happens with VLC; with Firefox open, the audio shuts off, but the video can still advance

Did you already create a new user account and tested it there?

sudo useradd -m testuser
sudo passwd testuser
sudo userdel -r testuser