Stephen

I can't see anything obviously wrong with that log. It's possible VA-API use isn't enabled for AV1 yet within Chrome, although it is probing it (profile 32), it's not even...

Looks like that's a known issue with the version of glibc/system header files. I think in this case we should just fall back to using the prebuilt PTX. Infact, we...

A 999 error is pretty generic. Can you see if there's anything in dmesg? Another tip is to try running `nvidia-modprobe`, though I doubt that'll help in this case. I'm...

I've managed to reproduce this locally, with exactly the same error in dmesg. There's a [post](https://forums.developer.nvidia.com/t/xid-31-after-wakeup-from-sleep/139870) on the NVIDIA forum with this issue, that I've replied to. In that post...

Can you try setting the `MOZ_DRM_DEVICE` environment variable to the correct `/dev/dri/renderD???` device for your NVIDIA card, and see if that helps?

You would need to investigate why lightdm fails to start with that parameter set, as this driver requires it set to work.

@Yowlen I assume you've also have multiple GPUs? Firefox is throwing the error because it's attempting to use the wrong EGL implementation. I haven't managed to understand exactly what options...

I've just quickly tested it here, and I see the same issue. Interestingly the video freezes completely when the Youtube video controls disappear, and then continues playing as normal if...

I believe this issue lies within Firefox, but I've been unable to debug it fully. I can see that as soon as the control disappear, something causes compositing on vsync...

@NoXPhasma is this with an 8k video?