On Sun, Sep 20, 2026 at 05:20:42PM +0200, [email protected] wrote: > Package: src:linux > Version: 7.1.8-1~bpo13+1 > Severity: important > Tags: upstream > X-Debbugs-Cc: [email protected] > > Dear Maintainer, > > Since upgrading the backports kernel from 7.1.3 to 7.1.8, the display > pipeline wedges at random after a few hours of uptime: the screen > stops > updating while the rest of the system keeps running normally (the > journal > keeps growing for hours behind the frozen image, SSH and cron still > work). > Only a reboot restores the affected CRTC reliably. > > The kernel logs "[drm] *ERROR* flip_done timed out", followed by > "commit wait timed out" on the CRTC, the plane and the connector, and > by a > WARNING in dm_arm_vblank_event(). > > Both amdgpu devices of this hybrid laptop are affected, > independently: the > Navi 14 dGPU (0000:03:00.0, HDMI-A-1) and the Renoir iGPU > (0000:07:00.0, > eDP-1). > > I have kept 7.1.3+deb13-amd64 installed and I can boot either kernel > on > demand, so the regression window is narrow and testable. I am willing > to > bisect or to test intermediate kernels if that helps.
Bisecting would probably be useful. Might be useful to test a newer upstream kernel first. There is 7.2.6 in the Debian archive. Please tell if you need instructions for a bisection. (https://bugs.debian.org/1147177 contains such an instruction that should be easily adaptable for your situation.) > [... much data generated probably by an AI agent ...] While an AI agent is helpful at times to report a bug, please still provide the traditional info generated by reportbug. This is much more useful for us. Best regards Uwe
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