*** This bug is a duplicate of bug 1930982 ***
    https://bugs.launchpad.net/bugs/1930982

Looks like this is a duplicate of #1930982 which is worth looking at for
a workaround

** This bug has been marked a duplicate of bug 1930982
   Firefox 89: webrender breaks videos on Raspberry Pi

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https://bugs.launchpad.net/bugs/1931527

Title:
   I have artifacts on Youtube videos in Firefox.

Status in firefox package in Ubuntu:
  Confirmed

Bug description:
  I use a Raspberry Pi 4, and now I have artifacts on Youtube videos in
  Firefox after update. Ubuntu 20.10, Firefox
  89.0+build2-0ubuntu0.20.10.1 arm64

  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: firefox 89.0+build2-0ubuntu0.20.10.1
  ProcVersionSignature: Ubuntu 5.8.0-1026.29-raspi 5.8.18
  Uname: Linux 5.8.0-1026-raspi aarch64
  AddonCompatCheckDisabled: False
  ApportVersion: 2.20.11-0ubuntu50.7
  Architecture: arm64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  daniel     1398 F.... pulseaudio
   /dev/snd/pcmC1D0p:   daniel     1398 F...m pulseaudio
   /dev/snd/controlC0:  daniel     1398 F.... pulseaudio
  BuildID: 20210527174632
  CasperMD5CheckResult: skip
  Channel: Unavailable
  Date: Thu Jun 10 07:55:19 2021
  ForcedLayersAccel: False
  ImageMediaBuild: 20201022
  IpRoute:
   default via 192.168.1.1 dev eth0 proto dhcp metric 100 
   default via 192.168.1.1 dev wlan0 proto dhcp metric 600 
   169.254.0.0/16 dev eth0 scope link metric 1000 
   192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.113 metric 100 
   192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.114 metric 600
  NoProfiles: True
  PciNetwork:
   
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
  RunningIncompatibleAddons: False
  SourcePackage: firefox
  UpgradeStatus: No upgrade log present (probably fresh install)

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