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ove

Member

Registered: 2025-02-15

Posts: 24

Re: Sudden loss of display output - ThinkPad amdgpu

But that involves simply disabling HW acceleration for FF - do you actually have to do any of the other steps?

No probably not, but I haven't ruled out a better solution to this, as the temps are still pretty hot even with HWA off. I thought it would be better to explicitly set outputs to 8bpc, just in case. Out of curiosity, do you use a different YouTube client/frontend?

seth

Member

Registered: 2012-09-03

Posts: 65,942

Re: Sudden loss of display output - ThinkPad amdgpu

temps are still pretty hot even with HWA off.

Because the poor CPU has to do all the work now.
Since we're down to FF as the problem, what's the current value of "media.ffmpeg.vaapi.force-surface-zero-copy" (in about:config) and what if you change that?
(Obviously w/ HW acceleration re-enabled) - 0 disables it, 1 enables it an 2 is the "default" (ie. FF rolls a dice on your hardware or whatever )

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ove

Member

Registered: 2025-02-15

Posts: 24

Re: Sudden loss of display output - ThinkPad amdgpu

Setting 'media.ffmpeg.vaapi.force-surface-zero-copy' to 0, 1, or 2 causes a crash.

seth

Member

Registered: 2012-09-03

Posts: 65,942

Re: Sudden loss of display output - ThinkPad amdgpu

"fuck"
X11 still works?
Have we ever tried a wayland compositor that's not hyprland? Weston or sway?

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

ove

Member

Registered: 2025-02-15

Posts: 24

Re: Sudden loss of display output - ThinkPad amdgpu

X still works, tested on an EndeavourOS live env, with HWA and VA-API enabled. Sway crashes like Hyprland.

seth

Member

Registered: 2012-09-03

Posts: 65,942

Re: Sudden loss of display output - ThinkPad amdgpu

Let's see whether we can break X11, start the server w/ "Xorg … -depth 10"
The server is either started by xinit in which case the xserverrc can be used to control parameters or by some DM which typically all have session setup scripts where you can edit that.
The alterntive would require to write an X11 config w/ a screen section.

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

ove

Member

Registered: 2025-02-15

Posts: 24

Re: Sudden loss of display output - ThinkPad amdgpu

I have not been able to break X with 10bpc.

seth

Member

Registered: 2012-09-03

Posts: 65,942

Re: Sudden loss of display output - ThinkPad amdgpu

Did the server log suggest that it's running on 10bpc?
Or

xdpyinfo | grep "depth of root" # should say 30, not 24

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

ove

Member

Registered: 2025-02-15

Posts: 24

Re: Sudden loss of display output - ThinkPad amdgpu

xdpyinfo | grep "depth of root"

I get "depth of root window:    30 planes"

seth

Member

Registered: 2012-09-03

Posts: 65,942

Re: Sudden loss of display output - ThinkPad amdgpu

That's 10bpc and there goes that theory
Have you ever tried this on not-hyprland (sway, weston, labwc, …)?

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

ove

Member

Registered: 2025-02-15

Posts: 24

Re: Sudden loss of display output - ThinkPad amdgpu

Yes, I have had the same issues with sway.