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Date: Mon, 9 Feb 2026 17:53:23 -0500
From: Hamza Mahfooz <someguy@effective-light.com>
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Subject: Re: [PATCH v2 2/2] drm/amdgpu: implement page_flip_timeout() supporty
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On Mon, Feb 09, 2026 at 10:36:23AM +0100, Christian König wrote:
> Well that might work but is even worse than a GPU reset.
> 
> Have you tried to just signal the page flip as done?
> 

I have tried that actually and it didn't work in my case (outside of
your contrived scenario [1], though forcing a full modeset should take
care of that case regardless).

Though, I strongly suspect a firmware hang with the issue that I'm
seeing since I get DMCUB errors before the timeout. i.e.:

amdgpu 0000:06:00.0: [drm] *ERROR* dc_dmub_srv_log_diagnostic_data: DMCUB error - collecting diagnostic data
[...]
amdgpu 0000:06:00.0: [drm] *ERROR* [CRTC:364:crtc-0] flip_done timed out


[1] https://lore.kernel.org/r/30f2480d-016f-417e-9ddf-7805e4943e7b@amd.com/