Open Bug 1850318 Opened 1 month ago Updated 19 days ago

Firefox using llvmpipe instead of hardware GPU on Wayland


(Core :: Graphics, defect, P3)

Firefox 117





(Reporter: iris, Unassigned)


(Blocks 2 open bugs)



(2 files)

34.89 KB, text/plain
1.04 KB, text/plain
Attached file about_support.txt

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/117.0

Steps to reproduce:

Installed version 117 from the mozillateam PPA, and opened Firefox with MOZ_ENABLE_WAYLAND set.

Actual results:

In about:support, it shows that Firefox is using llvmpipe as its GPU for WebGL, instead of the builtin one.

Expected results:

Firefox would prioritize the hardware GPU correctly.

The Bugbug bot thinks this bug should belong to the 'Core::Graphics' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Component: Untriaged → Graphics
Product: Firefox → Core
Flags: needinfo?(stransky)

Good. Please:

  1. test Mozilla binaries:

  2. Run Firefox with MOZ_GFX_DEBUG env variable and attach the log here:

MOZ_GFX_DEBUG=1 firefox > log.txt 2>&1


Flags: needinfo?(stransky) → needinfo?(iris)
Priority: -- → P3
Attached file log.txt

The Mozilla binary seems to work fine - it detects the GPU correctly. I've attached the log.txt for the Firefox I have installed currently.

Flags: needinfo?(iris)
Severity: -- → S3
Blocks: snap
OS: Unspecified → Linux
Hardware: Unspecified → x86_64
See Also: → 1847175
Blocks: wayland
No longer blocks: snap

mozillateam PPA is not maintained by us as much as I can tell, and it's deb package not snap

at best it could impact snap packaging with wayland

Blocks: snap-wayland

Looks like mozillateam PPA is missing some gfx libraries so GL is not detected properly.

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