Bug#1149109: linux-image-7.1.8+deb13-amd64: amdgpu flip_done timed out and freeze on RX 6600 (regression from 7.1.3)

From	Salvatore Bonaccorso <carnil@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1149109: linux-image-7.1.8+deb13-amd64: amdgpu flip_done timed out and freeze on RX 6600 (regression from 7.1.3)
Date	2026-10-07 22:00 +0200
Message-ID	<NLFXY-48oQ-3@gated-at.bofh.it> (permalink)
References	<NHF0u-1XxJ-13@gated-at.bofh.it> <NHF0u-1XxJ-13@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi,

On Sat, Sep 26, 2026 at 08:47:49PM +0300, Maksim wrote:
> Package: linux-image-7.1.8+deb13-amd64
> Version: 7.1.8-1~bpo13+1
> Severity: important
> 
> Dear Maintainer,
> 
> After upgrading to kernel 7.1.8, the system freezes when Alt+Tabbing
> out of fullscreen games (tested with Fallout Shelter via Steam/Proton).
> 
> dmesg shows:
> amdgpu 0000:0a:00.0: [drm] *ERROR* [CRTC:422:crtc-0] flip_done timed out
> amdgpu 0000:0a:00.0: [drm] *ERROR* flip_done timed out
> amdgpu 0000:0a:00.0: [drm] *ERROR* [CRTC:422:crtc-0] commit wait timed out
> 
> Hardware: AMD Radeon RX 6600 (Navi 23), Ryzen 7 5700X,
> Gigabyte B550 AORUS ELITE V2 (BIOS FId, 2026-08-18), 128 GB RAM.
> 
> Kernel 7.1.3 works fine with same hardware and same games.
> The problem is a regression introduced in 7.1.8.
> 
> Workaround: revert to kernel 7.1.3 and pin it via apt-mark hold.
> 
> I already tried amdgpu.dcdebugmask=0x410 and it did not help.
> 
> Note: currently running 7.1.3 (as shown in System Information below),
> because 7.1.8 is unusable due to this bug.

Can you please check if this is still reproducible with 7.2.9-1? Can
you additionally in case reproducible with 7.2.9-1 test without the
amdgpu.gpu_recovery=1 kernel parameter, and report back?

Regards,
Salvatore

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Bug#1149109: linux-image-7.1.8+deb13-amd64: amdgpu flip_done timed out and freeze on RX 6600 (regression from 7.1.3) Maksim <sinelnikovma@ya.ru> - 2026-09-26 20:10 +0200
  Processed: Re: Bug#1149109: linux-image-7.1.8+deb13-amd64: amdgpu  flip_done timed out and freeze on RX 6600 (regression from 7.1.3) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-10-07 22:00 +0200
  Bug#1149109: linux-image-7.1.8+deb13-amd64: amdgpu flip_done timed out and freeze on RX 6600 (regression from 7.1.3) Salvatore Bonaccorso <carnil@debian.org> - 2026-10-07 22:00 +0200

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