After upgrading WirePlumber from 0.5.15-1 to 0.5.16-1, the ALSA monitor repeatedly attempted to create a second node for an already-active HDMI output.
wplua: [string "alsa.lua"]:446: attempt to call a nil value (method 'store_managed_pending')
Observed behavior
Before service restart:
The HDMI output was the default sink, unmuted, and set to 14%.
Firefox playback was routed to that HDMI output.
PipeWire exposed two HDMI sinks with the same node.name.
The valid sink was running, while the extra sink had no state in the PulseAudio view.
PipeWire repeatedly retried creation of alsa_output.pci-0000_04_00.1.hdmi-stereo-extra1-86 approximately every five seconds.
Each retry failed because hdmi:0,1 was busy.
GNOME master-volume changes appeared ineffective during this state
Summary
pipewire[16462]: spa.alsa: 'hdmi:0,1': playback open failed: Device or resource busy
pipewire[16462]: pw.node: (alsa_output.pci-0000_04_00.1.hdmi-stereo-extra1-86) suspended -> error (Start error: Device or resource busy)
wireplumber[16463]: s-monitors: Failed to create ALSA node alsa_output.pci-0000_04_00.1.hdmi-stereo-extra1: Object activation aborted: PipeWire proxy destroyed
wireplumber[16463]: wplua: [string "alsa.lua"]:446: attempt to call a nil value (method 'store_managed_pending')
Recovered master functionality with :
systemctl --user restart wireplumber pipewire pipewire-pulse
Summary
- WirePlumber:
0.5.16-1 - Previous WirePlumber version:
0.5.15-1 - WirePlumber upgrade time:
2026-09-01 16:28:51 +0200 - PipeWire:
1:1.6.8-1 - pipewire-audio:
1:1.6.8-1 - pipewire-pulse:
1:1.6.8-1 - ALSA library:
1.2.16.1-1 - ALSA UCM configuration:
1.2.16.1-1 - ALSA utilities:
1.2.16-1 - Desktop: GNOME
- Audio server:
PulseAudio (on PipeWire 1.6.8) - Active output:
Raven/Raven2/Fenghuang HDMI/DP Audio Controller Digital Stereo (HDMI 2) [27P2DG5] - Relevant PCM:
hdmi:0,1(/dev/snd/pcmC0D7p)
Summary
System:
Kernel: 7.2.2-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 16.2.1
clocksource: hpet avail: acpi_pm parameters: BOOT_IMAGE=/vmlinuz-7.2-x86_64
root=UUID=ff1416bb-6075-4ba5-bc47-2584d8a9e41b rw quiet splash apparmor=1
security=apparmor udev.log_priority=3
Desktop: GNOME v: 50.4 tk: GTK v: 3.24.52 wm: gnome-shell
tools: gsd-screensaver-proxy dm: GDM v: 50.2 Distro: Manjaro
base: Arch Linux
Machine:
Type: Laptop System: HP product: HP EliteBook 755 G5 v: SBKPFV3
serial: <superuser required> Chassis: type: 10 serial: <superuser required>
Mobo: HP model: 83D5 v: KBC Version 08.63.00 serial: <superuser required>
part-nu: 3UN79EA#ABZ uuid: <superuser required> Firmware: UEFI vendor: HP
v: Q81 Ver. 01.29.00 date: 07/01/2025
Battery:
ID-1: BAT0 charge: 33.3 Wh (98.5%) condition: 33.8/55.4 Wh (60.9%)
volts: 11.4 min: 11.55 model: Hewlett-Packard Primary type: Li-ion
serial: <filter> charging: status: not charging cycles: 35
Memory:
System RAM: total: 32 GiB available: 30.29 GiB used: 9.81 GiB (32.4%)
Message: For most reliable report, use superuser + dmidecode.
Array-1: capacity: 32 GiB slots: 2 modules: 2 EC: None
max-module-size: 16 GiB note: est.
Device-1: Bottom-Slot 1(left) type: DDR4 detail: synchronous unbuffered
(unregistered) size: 16 GiB speed: spec: 2667 MT/s actual: 2400 MT/s
volts: note: check curr: 1 min: 1 max: 1 width (bits): data: 64 total: 64
manufacturer: Samsung part-no: M471A2K43DB1-CTD serial: <filter>
Device-2: Bottom-Slot 2(right) type: DDR4 detail: synchronous unbuffered
(unregistered) size: 16 GiB speed: spec: 2667 MT/s actual: 2400 MT/s
volts: note: check curr: 1 min: 1 max: 1 width (bits): data: 64 total: 64
manufacturer: Kingston part-no: 9905663-030.A00G serial: <filter>
PCI Slots:
Permissions: Unable to run dmidecode. Root privileges required.
CPU:
Info: model: AMD Ryzen 7 PRO 2700U w/ Radeon Vega Mobile Gfx bits: 64
type: MT MCP arch: Zen level: v3 note: check built: 2017-19 process: GF 14nm
family: 0x17 (23) model-id: 0x11 (17) stepping: 0 microcode: 0x8101016
Topology: cpus: 1x dies: 1 clusters: 1 cores: 4 threads: 8 tpc: 2
smt: enabled cache: L1: 384 KiB desc: d-4x32 KiB; i-4x64 KiB L2: 2 MiB
desc: 4x512 KiB L3: 4 MiB desc: 1x4 MiB
Speed (MHz): avg: 2716 min/max: 1600/3800 boost: enabled scaling:
driver: acpi-cpufreq governor: schedutil cores: 1: 2716 2: 2716 3: 2716
4: 2716 5: 2716 6: 2716 7: 2716 8: 2716 bogomips: 35132
Flags: 3dnowprefetch abm adx aes aperfmperf apic arat avic avx avx2 bmi1
bmi2 bpext clflush clflushopt clzero cmov cmp_legacy constant_tsc cpb
cpuid cr8_legacy cx16 cx8 de decodeassists extapic extd_apicid f16c
flushbyasid fma fpu fsgsbase fxsr fxsr_opt ht hw_pstate ibpb lahf_lm lbrv
lm mca mce misalignsse mmx mmxext monitor movbe msr mtrr mwaitx
nonstop_tsc nopl npt nrip_save nx osvw overflow_recov pae pat pausefilter
pclmulqdq pdpe1gb perfctr_core perfctr_llc perfctr_nb pfthreshold pge pni
popcnt pse pse36 rapl rdrand rdseed rdtscp rep_good sep sev sev_es sha_ni
skinit smap smca smep ssbd sse sse2 sse4_1 sse4_2 sse4a ssse3 succor svm
svm_lock syscall tce topoext tsc tsc_scale v_vmsave_vmload vgif
vmcb_clean vme vmmcall wdt xgetbv1 xsave xsavec xsaveerptr xsaveopt
Vulnerabilities:
Type: gather_data_sampling status: Not affected
Type: ghostwrite status: Not affected
Type: indirect_target_selection status: Not affected
Type: itlb_multihit status: Not affected
Type: l1tf status: Not affected
Type: mds status: Not affected
Type: meltdown status: Not affected
Type: mmio_stale_data status: Not affected
Type: old_microcode status: Not affected
Type: reg_file_data_sampling status: Not affected
Type: retbleed mitigation: untrained return thunk; SMT vulnerable
Type: spec_rstack_overflow mitigation: Safe RET
Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
prctl
Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
sanitization
Type: spectre_v2 mitigation: Retpolines; IBPB: conditional; STIBP:
disabled; RSB filling; PBRSB-eIBRS: Not affected; BHI: Not affected
Type: srbds status: Not affected
Type: tsa status: Not affected
Type: tsx_async_abort status: Not affected
Type: vmscape mitigation: IBPB before exit to userspace
Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] Raven Ridge [Radeon Vega Series
/ Radeon Mobile Series] vendor: Hewlett-Packard driver: amdgpu v: kernel
arch: GCN-5 code: Vega process: GF 14nm built: 2017-20 pcie: gen: 3
speed: 8 GT/s lanes: 16 ports: active: DP-1,eDP-1 empty: DP-2,DP-3
bus-ID: 04:00.0 chip-ID: 1002:15dd class-ID: 0300 temp: 66.0 C
Device-2: Chicony HP HD Camera driver: uvcvideo type: USB rev: 2.0
speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 4-2:3 chip-ID: 04f2:b5e7
class-ID: 0e02 serial: <filter>
Display: wayland server: X.org v: 1.21.1.24 with: Xwayland v: 24.1.13
compositor: gnome-shell driver: gpu: amdgpu display-ID: 0
Monitor-1: DP-1 model: AOC 27P2DG5 serial: <filter> built: 2025
res: 1920x1080 dpi: 82 gamma: 1.2 chroma: red: x: 0.647 y: 0.333 green:
x: 0.302 y: 0.616 blue: x: 0.149 y: 0.086 white: x: 0.314 y: 0.329
size: 598x336mm (23.54x13.23") diag: 686mm (27") ratio: 16:9
modes: 1920x1080, 1680x1050, 1280x1024, 1440x900, 1280x960, 1280x720,
1024x768, 832x624, 800x600, 720x576, 720x480, 640x480, 720x400
Monitor-2: eDP-1 model: LG Display 0x062e built: 2019 res: 1920x1080
dpi: 142 gamma: 1.2 chroma: red: x: 0.592 y: 0.369 green: x: 0.349 y: 0.557
blue: x: 0.153 y: 0.110 white: x: 0.314 y: 0.329
size: 344x194mm (13.54x7.64") diag: 395mm (15.5") ratio: 16:9
modes: 1920x1080, 1680x1050, 1280x1024, 1440x900, 1280x800, 1280x720,
1024x768, 800x600, 640x480
EDID-Warnings: 1: parse_edid: unknown flag 2
API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi
device: 1 drv: swrast gbm: drv: radeonsi surfaceless: drv: radeonsi wayland:
drv: radeonsi x11: drv: radeonsi
API: OpenGL v: 4.6 vendor: amd mesa v: 26.2.1-arch1.1 glx-v: 1.4
direct-render: yes renderer: AMD Radeon Vega 10 Graphics (radeonsi raven
ACO DRM 3.64 7.2.2-1-MANJARO) device-ID: 1002:15dd memory: 1000 MiB
unified: yes display-ID: :0.0
API: Vulkan v: 1.4.357 layers: 6 device: 0 type: integrated-gpu name: AMD
Radeon Vega 10 Graphics (RADV RAVEN) driver: mesa radv v: 26.2.1-arch1.1
device-ID: 1002:15dd surfaces: N/A
Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo de: kscreen-doctor
gpu: amd-smi x11: xdpyinfo, xprop, xrandr
Audio:
Device-1: Advanced Micro Devices [AMD/ATI] Raven/Raven2/Fenghuang HDMI/DP
Audio driver: snd_hda_intel v: kernel pcie: gen: 3 speed: 8 GT/s lanes: 16
bus-ID: 04:00.1 chip-ID: 1002:15de class-ID: 0403
Device-2: Advanced Micro Devices [AMD] Ryzen HD Audio
vendor: Hewlett-Packard driver: snd_hda_intel v: kernel pcie: gen: 3
speed: 8 GT/s lanes: 16 bus-ID: 04:00.6 chip-ID: 1022:15e3 class-ID: 0403
API: ALSA v: k7.2.2-1-MANJARO status: kernel-api with: aoss
type: oss-emulator tools: alsactl,alsamixer,amixer
Server-1: sndiod v: N/A status: off tools: aucat,midicat,sndioctl
Server-2: JACK v: 1.9.22 status: off tools: N/A
Server-3: PipeWire v: 1.6.8 status: active with: 1: pipewire-pulse
status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
tools: pactl,pw-cat,pw-cli,wpctl
Network:
Device-1: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
vendor: Hewlett-Packard driver: r8169 v: kernel pcie: gen: 1 speed: 2.5 GT/s
lanes: 1 port: 3300 bus-ID: 01:00.0 chip-ID: 10ec:8168 class-ID: 0200
IF: enp1s0f0 state: up speed: 1000 Mbps duplex: full mac: <filter>
IP v4: <filter> type: dynamic noprefixroute scope: global
broadcast: <filter>
IP v6: <filter> type: noprefixroute scope: link
Device-2: Intel Wireless 8265 / 8275 driver: iwlwifi v: kernel pcie:
gen: 1 speed: 2.5 GT/s lanes: 1 bus-ID: 02:00.0 chip-ID: 8086:24fd
class-ID: 0280
IF: wlp2s0 state: up mac: <filter>
IP v4: <filter> type: dynamic noprefixroute scope: global
broadcast: <filter>
IP v6: <filter> type: noprefixroute scope: link
IF-ID-1: ipv6leakintrf0 state: unknown speed: N/A duplex: N/A
mac: <filter>
IP v6: <filter> type: noprefixroute scope: global
IP v6: <filter> type: noprefixroute scope: link
IF-ID-2: proton0 state: unknown speed: N/A duplex: N/A mac: N/A
IP v4: <filter> type: noprefixroute scope: global
IP v6: <filter> type: noprefixroute scope: global
IP v6: <filter> type: noprefixroute scope: link
IF-ID-3: vmnet1 state: unknown speed: N/A duplex: N/A mac: <filter>
IP v4: <filter> scope: global broadcast: <filter>
IP v6: <filter> virtual: proto kernel_ll scope: link
IF-ID-4: vmnet8 state: unknown speed: N/A duplex: N/A mac: <filter>
IP v4: <filter> scope: global broadcast: <filter>
IP v6: <filter> virtual: proto kernel_ll scope: link
Info: services: httpd, NetworkManager, systemd-timesyncd, wpa_supplicant
WAN IP: <filter>
Bluetooth:
Device-1: Intel Bluetooth wireless interface driver: btusb v: 0.8 type: USB
rev: 2.0 speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 4-1.1:4
chip-ID: 8087:0a2b class-ID: e001
Report: rfkill ID: hci0 rfk-id: 0 state: up address: see --recommends
Logical:
Message: No logical block device data found.
Device-1: luks-f50d53e0-b9e4-4865-8236-7375d2025439 maj-min: 253:0
type: LUKS dm: dm-0 size: 754.41 GiB
Components:
p-1: nvme0n1p3 maj-min: 259:3 size: 754.41 GiB
RAID:
Message: No RAID data found.
Drives:
Local Storage: total: 931.51 GiB used: 677.14 GiB (72.7%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Seagate model: XPG SPECTRIX S20G
size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
lanes: 4 tech: SSD serial: <filter> fw-rev: VC0S036H temp: 33.9 C
scheme: GPT
Message: No optical or floppy data found.
Partition:
ID-1: / raw-size: 175.78 GiB size: 171.96 GiB (97.83%)
used: 92.24 GiB (53.6%) fs: ext4 dev: /dev/nvme0n1p2 maj-min: 259:2
label: root uuid: ff1416bb-6075-4ba5-bc47-2584d8a9e41b
ID-2: /boot raw-size: 1000 MiB size: 965.9 MiB (96.59%)
used: 220.5 MiB (22.8%) fs: ext4 dev: /dev/nvme0n1p1 maj-min: 259:1
label: boot uuid: 814fe8fe-da70-4bd5-aaaa-af8a06d4b9cb
ID-3: /boot/efi raw-size: 350 MiB size: 349.3 MiB (99.80%)
used: 32.5 MiB (9.3%) fs: vfat dev: /dev/nvme0n1p4 maj-min: 259:4 label: efi
uuid: 3498-53B1
ID-4: /home raw-size: 754.41 GiB size: 741.5 GiB (98.29%)
used: 584.65 GiB (78.8%) fs: ext4 dev: /dev/dm-0 maj-min: 253:0
mapped: luks-f50d53e0-b9e4-4865-8236-7375d2025439 label: home
uuid: 4d09c9c7-e876-4eda-8975-c3d66e294054
Swap:
Alert: No swap data was found.
Unmounted:
Message: No unmounted partitions found.
USB:
Hub-1: 1-0:1 info: full speed or root hub ports: 1 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
class-ID: 0900
Hub-2: 2-0:1 info: hi-speed hub with single TT ports: 4 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
class-ID: 0900
Device-1: 2-1:2 info: Yubicom Yubikey 4/5 U2F type: HID
driver: hid-generic,usbhid interfaces: 1 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s)
lanes: 1 mode: 1.1 power: 30mA chip-ID: 1050:0402 class-ID: 0300
Device-2: 2-3:3 info: Areson Corp Philips USB Receiver
type: keyboard,mouse driver: hid-generic,usbhid interfaces: 2 rev: 2.0
speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 100mA
chip-ID: 25a7:fa67 class-ID: 0301
Hub-3: 3-0:1 info: super-speed hub ports: 4 rev: 3.1
speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
class-ID: 0900
Hub-4: 4-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
class-ID: 0900
Hub-5: 4-1:2 info: Genesys Logic Hub ports: 4 rev: 2.0
speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 100mA
chip-ID: 05e3:0608 class-ID: 0900
Device-1: 4-1.1:4 info: Intel Bluetooth wireless interface type: bluetooth
driver: btusb interfaces: 2 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1
mode: 1.1 power: 100mA chip-ID: 8087:0a2b class-ID: e001
Device-2: 4-1.3:5 info: Validity Sensors type: <vendor specific>
driver: N/A interfaces: 1 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1
mode: 1.1 power: 100mA chip-ID: 138a:00ab class-ID: ff00 serial: <filter>
Device-3: 4-2:3 info: Chicony HP HD Camera type: video driver: uvcvideo
interfaces: 4 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0
power: 500mA chip-ID: 04f2:b5e7 class-ID: 0e02 serial: <filter>
Hub-6: 5-0:1 info: super-speed hub ports: 1 rev: 3.1
speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
class-ID: 0900
Sensors:
System Temperatures: cpu: 67.0 C mobo: N/A gpu: amdgpu temp: 66.0 C
Fan Speeds (rpm): N/A
Repos:
Packages: 2991 pm: pacman pkgs: 2955 libs: 613 tools: gnome-software,
octopi, pamac, yay pm: rpm pkgs: 0 pm: flatpak pkgs: 36
Active pacman repo servers in: /etc/pacman.d/mirrorlist
1: https://ftp.lysator.liu.se/pub/manjaro/unstable/$repo/$arch
2: https://distrohub.kyiv.ua/manjaro/unstable/$repo/$arch
3: https://ohioix.mm.fcix.net/manjaro/unstable/$repo/$arch
4: https://southfront.mm.fcix.net/manjaro/unstable/$repo/$arch
5: https://codingflyboy.mm.fcix.net/manjaro/unstable/$repo/$arch
6: https://mirror.fcix.net/manjaro/unstable/$repo/$arch
7: https://mirror.xeonbd.com/manjaro/unstable/$repo/$arch
8: https://gsl-syd.mm.fcix.net/manjaro/unstable/$repo/$arch
Processes:
CPU top: 5 of 402
1: cpu: 200% command: ps pid: 413371 mem: 3.93 MiB (0.0%)
2: cpu: 40.4% command: gnome-shell pid: 5161 mem: 501.1 MiB (1.6%)
3: cpu: 34.6% command: firefox pid: 62767 mem: 1521.6 MiB (4.9%)
4: cpu: 18.9% command: firefox pid: 63236 mem: 92.8 MiB (0.2%)
5: cpu: 7.7% command: firefox pid: 208659 mem: 546.9 MiB (1.7%)
Memory top: 5 of 402
1: mem: 1576.8 MiB (5.0%) command: clamd pid: 1023 cpu: 0.8%
2: mem: 1521.6 MiB (4.9%) command: firefox pid: 62767 cpu: 34.6%
3: mem: 849.1 MiB (2.7%) command: QtWebEngineProcess pid: 9032 cpu: 1.1%
4: mem: 708.9 MiB (2.2%) command: firefox pid: 63754 cpu: 3.8%
5: mem: 644.2 MiB (2.0%) command: firefox pid: 91373 cpu: 6.1%
Info:
Processes: 402 Power: uptime: 1h 23m states: freeze,mem,disk suspend: deep
avail: s2idle wakeups: 0 hibernate: platform avail: shutdown, reboot,
suspend, test_resume image: 12.03 GiB services: gsd-power,
power-profiles-daemon, upowerd Init: systemd v: 261 default: graphical
tool: systemctl
Compilers: clang: 22.1.8 gcc: 16.2.1 alt: 14 Shell: Bash v: 5.3.15
running-in: kgx inxi: 3.3.41
Mod note:- Instead of the default Summary appearing in disclosure elements, you can add your own short text… 
Something like this:
[details="Look, look, it works..."]
Content here...
[/details]
Noted @soundofthunder
Second occurrence after an idle period
After the audio path remained idle for several hours, the master-volume control stopped affecting playback and three HDMI sink objects were present for the same ALSA endpoint. The primary sink was running while two duplicate sinks were suspended. No matching WirePlumber error was recorded during this occurrence, so it should be reported as a suspected recurrence of the morning failure, not as an identical confirmed error.
No, seriously now @Aragorn, who can I bug about this, reporting a bug? It’s the third occurrence this morning with the difference that in this 3rd occurrence the system soundless. I looked in the developers section but haven’t seen something suitable for that.
