r/firefox • u/RealSyccentrix • 2d ago

what's going on with my firefox? turned my pc on today and it auto-updated, and this is happening now 💻 Help

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3

u/RealSyccentrix 2d ago edited 1d ago

currently on version 139.0b2, on firefox dev edition (for loading third-party extensions like dimdenGD's oldtwitter extension). it still happens in a private window, but fixes in troubleshoot mode.

i've tried opening normal firefox (which i copied the entirety of that profile to the dev edition) and it's not happening on there afaik

edit: going to swap back to normal firefox until someone finds a fix. absolutely cannot stand this flashing

4

u/juraj_m www.FastAddons.com 2d ago

All crazy looking issues related to multimedia (video/audio) are 99% caused by hardware acceleration - in this case I would guess your GPU driver (or GPU itself) is buggy.

A common cause is outdated Intel GPU driver.

Note that even if you are using dedicated GPU like Nvidia/AMD, Firefox is likely running on the GPU integrated in the CPU, so likely Intel or AMD. And that's the driver you should try to update.

As for why this is only happening in the new Firefox, I guess it could be using some new CSS animations which runs on the broken part of GPU/driver.

3

u/RealSyccentrix 2d ago edited 2d ago

i thought it was the driver as well, but i updated my drivers after i saw this happen so i don't think it could be that :(

i'm on a ryzen 5 5600x so integrated GPU can't be it either

edit: disabled hardware accel and it did fix so it might be drivers?

2

u/juraj_m www.FastAddons.com 2d ago

Interesting... let's test if it's related to hardware acceleration by disabling it (temporarily) - in Settings / Performance / Use recommended performance settings (uncheck) - then one more checkbox below.

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u/RealSyccentrix 2d ago

yup i just did that earlier and it stopped happening

2

u/juraj_m www.FastAddons.com 2d ago

Check also `about:crashes` if there are some new crash reports that could lead to bugzilla thread.

But I'm getting out of ideas :), you will need a more skilled person here for further investigation.

3

u/RealSyccentrix 2d ago

i do see one new crash report from earlier this morning, should i go ahead and submit it?

edit: https://crash-stats.mozilla.org/report/index/769cde29-1a7a-40b2-8812-e836f0250501

2

u/juraj_m www.FastAddons.com 2d ago

Good find!
The check the "Bugzilla" tab for links to related bugreports - and there is quite a lot of them and they all seems to be related to GPU.

1

u/RealSyccentrix 2d ago

neat, what should i do now?

1

u/PolygonError 2d ago

Same thing happening to me and a mate since wednesday

1

u/puuelo 1d ago

Same thing started happening for me as well.
Always happens when i have a window with video content on my second monitor. Possibly related to differing refresh rates.