Has anybody experienced issues with cheese after the update? Video flickers just like if the app was working on a persistent burst mode or something …
Unfortunately, I’m not able to reproduce the issue anymore since I decided to roll back to my previous snapshot. There should be many journal entries related to cheese with a gstreamer error, if somebody is willing to reproduce it.
EDIT:
Just decided to step up and try the update again. 
This is what I get so far whenever I run cheese:
(cheese:1901): cheese-WARNING **: 13:16:10.322: Internal GStreamer error: code not implemented. Please file a bug at https://gitlab.freedesktop.org/gstreamer/gstreamer/issues/new.: ../gst-plugins-base/gst-libs/gst/video/gstvideofilter.c(296): gst_video_filter_transform (): /GstCameraBin:camerabin/GstViewfinderBin:vf-bin/GstVideoConvert:vfbin-csp:
invalid video buffer received
My full inxi as per How to provide good information:
System:
Kernel: 5.11.16-2-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0
parameters: BOOT_IMAGE=/boot/vmlinuz-5.11-x86_64
root=UUID=233a5452-b94a-4a1b-8c35-7f624aa41d2f rw apparmor=1
security=apparmor resume=UUID=4d80ab37-1d51-4a60-87b6-71ba1c774f85
udev.log_priority=3 systemd.unified_cgroup_hierarchy=true
Desktop: GNOME 3.38.4 tk: GTK 3.24.29 wm: gnome-shell dm: GDM 40.0
Distro: Manjaro Linux base: Arch Linux
Machine:
Type: Laptop System: Dell product: Inspiron 7559 v: 1.3.1 serial: <filter>
Chassis: type: 10 serial: <filter>
Mobo: Dell model: 0H0CC0 v: A00 serial: <filter> UEFI: Dell v: 1.3.1
date: 12/02/2018
Battery:
ID-1: BAT0 charge: 33.4 Wh (100.0%) condition: 33.4/74.0 Wh (45.1%)
volts: 12.5 min: 11.1 model: SDI Dell type: Li-ion serial: <filter>
status: Full
Memory:
RAM: total: 15.5 GiB used: 2.27 GiB (14.7%)
Array-1: capacity: 16 GiB slots: 2 EC: None max-module-size: 8 GiB
note: est.
Device-1: ChannelA-DIMM0 size: 8 GiB speed: 1600 MT/s type: DDR3
detail: synchronous bus-width: 64 bits total: 64 bits
manufacturer: 019800000198 part-no: KN2M64-ETB serial: <filter>
Device-2: ChannelB-DIMM0 size: 8 GiB speed: 1600 MT/s type: DDR3
detail: synchronous bus-width: 64 bits total: 64 bits
manufacturer: 859B0000802C part-no: CT102464BF160B.M16 serial: <filter>
CPU:
Info: Quad Core model: Intel Core i7-6700HQ socket: U3E1 bits: 64
type: MT MCP arch: Skylake-S family: 6 model-id: 5E (94) stepping: 3
microcode: E2 cache: L1: 256 KiB L2: 6 MiB L3: 6 MiB bogomips: 41621
Speed: 800 MHz min/max: 800/3500 MHz base/boost: 2500/3500 volts: 0.9 V
ext-clock: 100 MHz Core speeds (MHz): 1: 800 2: 800 3: 800 4: 800 5: 800
6: 800 7: 800 8: 800
Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat 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 hle 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 rtm 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
Graphics:
Device-1: Intel HD Graphics 530 vendor: Dell driver: i915 v: kernel
bus-ID: 00:02.0 chip-ID: 8086:191b class-ID: 0300
Device-2: NVIDIA GM107M [GeForce GTX 960M] vendor: Dell driver: nvidia
v: 460.73.01 alternate: nouveau,nvidia_drm bus-ID: 02:00.0
chip-ID: 10de:139b class-ID: 0302
Device-3: Sunplus Innovation Integrated_Webcam_HD type: USB driver: uvcvideo
bus-ID: 1-4:2 chip-ID: 1bcf:28b0 class-ID: 0e02
Display: server: X.Org 1.20.11 compositor: gnome-shell driver:
loaded: modesetting,nvidia alternate: fbdev,intel,nouveau,nv,vesa
display-ID: :1 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 res: 1920x1080 hz: 60 dpi: 142 size: 344x194mm (13.5x7.6")
diag: 395mm (15.5")
OpenGL: renderer: Mesa Intel HD Graphics 530 (SKL GT2) v: 4.6 Mesa 21.0.3
direct render: Yes
Audio:
Device-1: Intel 100 Series/C230 Series Family HD Audio vendor: Dell
driver: snd_hda_intel v: kernel bus-ID: 00:1f.3 chip-ID: 8086:a170
class-ID: 0403
Sound Server-1: ALSA v: k5.11.16-2-MANJARO running: yes
Sound Server-2: sndio v: N/A running: no
Sound Server-3: JACK v: 0.125.0 running: no
Sound Server-4: PulseAudio v: 14.2 running: yes
Sound Server-5: PipeWire v: 0.3.26 running: yes
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
vendor: Dell driver: r8169 v: kernel port: d000 bus-ID: 04:00.0
chip-ID: 10ec:8168 class-ID: 0200
IF: enp4s0 state: down mac: <filter>
Device-2: Intel Wireless 3165 driver: iwlwifi v: kernel port: d000
bus-ID: 05:00.0 chip-ID: 8086:3165 class-ID: 0280
IF: wlp5s0 state: up mac: <filter>
IP v4: <filter> type: dynamic noprefixroute scope: global
broadcast: <filter>
IP v6: <filter> type: noprefixroute scope: link
IF-ID-1: virbr0 state: down mac: <filter>
IP v4: <filter> scope: global broadcast: <filter>
WAN IP: <filter>
Bluetooth:
Device-1: Intel Bluetooth wireless interface type: USB driver: btusb v: 0.8
bus-ID: 1-5:3 chip-ID: 8087:0a2a class-ID: e001
Report: rfkill ID: hci0 rfk-id: 1 state: up address: see --recommends
Logical:
Message: No logical block device data found.
RAID:
Message: No RAID data found.
Drives:
Local Storage: total: 465.76 GiB used: 66.73 GiB (14.3%)
SMART Message: Required tool smartctl not installed. Check --recommends
ID-1: /dev/sda maj-min: 8:0 vendor: Western Digital
model: WDS500G2B0A-00SM50 size: 465.76 GiB block-size: physical: 512 B
logical: 512 B speed: 6.0 Gb/s rotation: SSD serial: <filter> rev: 00WD
scheme: GPT
Message: No optical or floppy data found.
Partition:
ID-1: / raw-size: 64 GiB size: 63.97 GiB (99.95%) used: 27.33 GiB (42.7%)
fs: xfs block-size: 512 B dev: /dev/sda7 maj-min: 8:7 label: N/A
uuid: 233a5452-b94a-4a1b-8c35-7f624aa41d2f
ID-2: /boot/efi raw-size: 512 MiB size: 511 MiB (99.80%)
used: 332 KiB (0.1%) fs: vfat block-size: 512 B dev: /dev/sda5 maj-min: 8:5
label: N/A uuid: B5F2-85E9
ID-3: /home raw-size: 96 GiB size: 95.97 GiB (99.97%) used: 39.4 GiB (41.1%)
fs: xfs block-size: 512 B dev: /dev/sda8 maj-min: 8:8 label: N/A
uuid: eace5e8f-f159-44f1-8de3-51f301d3bb18
Swap:
Kernel: swappiness: 60 (default) cache-pressure: 100 (default)
ID-1: swap-1 type: partition size: 16 GiB used: 0 KiB (0.0%) priority: -2
dev: /dev/sda6 maj-min: 8:6 label: N/A
uuid: 4d80ab37-1d51-4a60-87b6-71ba1c774f85
Unmounted:
ID-1: /dev/sda1 maj-min: 8:1 size: 100 MiB fs: vfat label: N/A
uuid: 7A39-12B5
ID-2: /dev/sda10 maj-min: 8:10 size: 16 GiB fs: ext label: N/A uuid: N/A
ID-3: /dev/sda2 maj-min: 8:2 size: 16 MiB fs: N/A label: N/A uuid: N/A
ID-4: /dev/sda3 maj-min: 8:3 size: 127.4 GiB fs: ntfs label: N/A
uuid: 1EB23F81B23F5C89
ID-5: /dev/sda4 maj-min: 8:4 size: 499 MiB fs: ntfs label: N/A
uuid: FEFE90DDFE90900F
ID-6: /dev/sda9 maj-min: 8:9 size: 144 GiB fs: fat (12 bit) label: N/A
uuid: N/A
USB:
Hub-1: 1-0:1 info: Full speed (or root) Hub ports: 16 rev: 2.0
speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
Device-1: 1-4:2 info: Sunplus Innovation Integrated_Webcam_HD type: Video
driver: uvcvideo interfaces: 2 rev: 2.0 speed: 480 Mb/s power: 500mA
chip-ID: 1bcf:28b0 class-ID: 0e02
Device-2: 1-5:3 info: Intel Bluetooth wireless interface type: Bluetooth
driver: btusb interfaces: 2 rev: 2.0 speed: 12 Mb/s power: 100mA
chip-ID: 8087:0a2a class-ID: e001
Hub-2: 2-0:1 info: Full speed (or root) Hub ports: 8 rev: 3.0 speed: 5 Gb/s
chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
System Temperatures: cpu: 60.0 C mobo: 29.8 C sodimm: SODIMM C
Fan Speeds (RPM): cpu: 0
Info:
Processes: 257 Uptime: 15m wakeups: 1 Init: systemd v: 247 tool: systemctl
Compilers: gcc: 10.2.0 Packages: 1441 pacman: 1427 lib: 419 flatpak: 11
snap: 3 Shell: Zsh (sudo) v: 5.8 default: Bash v: 5.1.0 running-in: kitty
inxi: 3.3.04
Same thing happens if I switch to kernel 5.10.32.
If I test with another webcam enabled app such as Skype, the video output works fine.
Any ideas on how to proceed with this?
I know this issue is not a big deal but IMO, you don’t expect minor things like that to happen in a Stable Release.
EDIT 2:
Issue Resolved.
Downgraded pipewire and pipewire-media-session to version 0.3.25-1