1860144 - Running Firefox via Ubuntu Snap shows no WebGPU Adapters

Status: RESOLVED FIXED

(Core :: Graphics: WebGPU, defect)

Description

[Jason Kratzer [:jkratzer]]

Attachment: about_support.log

Running Firefox installed via the Ubuntu snap on trunk shows available WebGPU adapters in about:support.

Version: 120.0a1
Build ID: 20231013034657

Comment 1

[Jim Blandy :jimb]

I can reproduce this as well on Fedora. When I run a local Firefox build, about:support shows two WebGPU adapters, but when I do sudo snap install firefox --edge and then snap run firefox, about:support shows two null WebGPU adapters.

Comment 2

[Jim Blandy :jimb]

Mike, who can we talk to about this?

Comment 3

[Mike Kaply [:mkaply]]

Forwarding the info to canonical.

Comment 4

[:gerard-majax]

out of curiosity, snap connections firefox ? does WebGPU depends on mesa at some level ?

Comment 5

[Erich Gubler [:ErichDonGubler] (he/him)]

:gerard-majax: Mesa 22.2.5 is what we currently test on Wayland's soft-rendering CI, AIUI. We need it for a Vulkan adapter.

Comment 6

[seb128]

Confirmed, does anyone has some pointers on how firefox is querying for the GPUs available?

Comment 7

[:gerard-majax]

Looks like we just lack vulkan support within the Snap. Isn't GLES supposed to work ? If so, what is required for it ?

Comment 8

[seb128]

Trying to stage libvulkan and the vulkan drivers in the snap and tweaking the icd path isn't enough to get a gpu listed but it also displays that apparmor error

audit: type=1400 audit(1698087364.021:1473): apparmor="DENIED" operation="open" class="file" profile="snap.firefox.firefox" name="/etc/igfx_user_feature.txt" pid=64382 comm="vaapitest" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0

unsure if that's enough to make vulkan not working properly though

Comment 9

[:gerard-majax]

Attachment: GitHub Pull Request

Comment 10

[:gerard-majax]

Upstream has a fix that adds Vulkan to the Snap package. Locally I can confirm on my AMD GPU that it now exposes in about:support, so you should likely re-test when it ships (next nightly ?)

Comment 11

[Jason Kratzer [:jkratzer]]

(In reply to :gerard-majax from comment #10)

Upstream has a fix that adds Vulkan to the Snap package. Locally I can confirm on my AMD GPU that it now exposes in about:support, so you should likely re-test when it ships (next nightly ?)

I just verified this on the latest snap and the WebGPU adapters are visible.