1928754 - Software renderer used on Ubuntu 24.10 wayland with Nvidia GPU and Firefox snap

Status: UNCONFIRMED

(Core :: Graphics: WebRender, defect)

Description

[Alexandre Hen]

Attachment: aboutsupport.txt

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:132.0) Gecko/20100101 Firefox/132.0

Steps to reproduce:

I tried Ubuntu 24.10 with Wayland on my PC which includes a Nvidia RTX 2080 GPU.
My nvidia driver is the latest available directly from Ubuntu : 560.35.03 (nvidia-driver-560-open)

Actual results:

Scrolling in web pages is janky with a lot of stutters.
Seeing videos on Youtube leads to a lot of CPU usage.

When I look at about:support, I see that Firefox is not using my GPU to render web pages. I see "Webrender (Software)" and "Mesa -- llvmpipe (LLVM 15.0.7, 256 bits)" in WebGL driver.

Expected results:

Smooth renderer of webpages.
Reduced CPU usage with GPU rendering, like on the X11 session.

Comment 1

[Alexandre Hen]

Attachment: firefoxsnapconnections

Comment 2

[Alexandre Hen]

Attachment: firefoxsnaplist

Comment 3

[Alexandre Hen]

Attachment: nvidia-smi

Comment 4

[Alexandre Hen]

Attachment: snapversion

Comment 5

[Alexandre Hen]

Contrary to what I said on my initial comment, Firefox is not using my GPU in the X11 either.
I have software renderer in about:support too.

Comment 6

[Alexandre Hen]

And to be absolutely clear, the Firefox flatpak from Flathub has not this issue.

Comment 7

[Alexandre Hen]

Attachment: firefoxflatpak.txt

Comment 8

[BugBot [:suhaib / :marco/ :calixte]]

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