Public bug reported:
Firefox 89 enabled the Webrender framework by default. Unfortunately,
the GFX drivers on a Pi 4 seem to be non-compliant in a way that breaks
videos - specifically, there will be a lot of primary coloured artefacts
in videos. My guess is that other Raspberry Pi's will also be affected,
but I don't have the hardware available to test. Setting gfx.webrender
.force-disabled to True fixes the issue, so it's fairly clear where it
lies.
Mozilla doesn't seem to provide official builds for Raspberry Pi's (or
Linux/Arm in general), so I think this is an issue to fix in these
packages, rather than upstream. The quick solution would to just set
gfx.webrender.force-disabled to True for the Pi-platforms and be done
with it, but there may be better solutions I don't know about.
Additioal info:
Ubuntu release: 21.04
Firefox package: firefox/hirsute-security,hirsute-updates,now
89.0+build2-0ubuntu0.21.04.1 arm64
Steps to reproduce: Play a video on Youtube, watch the coloured blocks appear.
Then set gfx.webrender.force-disabled to True and restart to verify the fix.
** Affects: firefox (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
Firefox 89 enabled the Webrender framework by default. Unfortunately,
the GFX drivers on a Pi 4 seem to be non-compliant in a way that breaks
videos - specifically, there will be a lot of primary coloured artefacts
in videos. My guess is that other Raspberry Pi's will also be affected,
but I don't have the hardware available to test. Setting gfx.webrender
.force-disabled to True fixes the issue, so it's fairly clear where it
lies.
Mozilla doesn't seem to provide official builds for Raspberry Pi's (or
- Linux/Arm in general), so I think this is an issue with these packages,
- rather than upstream. The quick solution would to just set gfx.webrender
- .force-disabled to True for the Pi-platforms and be done with it, but
- there may be better solutions I don't know about.
+ Linux/Arm in general), so I think this is an issue to fix in these
+ packages, rather than upstream. The quick solution would to just set
+ gfx.webrender.force-disabled to True for the Pi-platforms and be done
+ with it, but there may be better solutions I don't know about.
Additioal info:
Ubuntu release: 21.04
Firefox package: firefox/hirsute-security,hirsute-updates,now
89.0+build2-0ubuntu0.21.04.1 arm64
Steps to reproduce: Play a video on Youtube, watch the coloured blocks
appear. Then set gfx.webrender.force-disabled to True and restart to verify the
fix.
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https://bugs.launchpad.net/bugs/1930982
Title:
Firefox 89: webrender breaks videos on Raspberry Pi
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