Control: reassign -1 src:linux 6.16.3-1 Control: tags -1 + moreinfo upstream
Hi Marcel, On Wed, Sep 10, 2025 at 08:06:10AM +0200, Marcel Jira wrote: > Package: inux-image-6.16.3+deb14-amd64 > Version: linux-image-6.16.3+deb14-amd64 > Severity: important > Tags: upstream > X-Debbugs-Cc: [email protected] > > Dear Maintainer, > > since the upgrade to Linux kernel 6.16.3, suspend to RAM no longer works on my > system. > With kernel 6.12.38 (previous version in testing) suspend still works as > expected, so this is a regression introduced between 6.12 and 6.16. > > --- > > Observed behavior (user perspective): > - When suspending (on timeout or via power button), the screen turns off as > expected. > - Mouse and keyboard LEDs flash a few times, then remain dark (I did not > observer those flashes on previous kernels, but I am unsure). > - Screens go dark as expected. > - The system power button LED stays permanently on (it should normally turn > off). > - The system never resumes from suspend. > - Only a hard power-off (long press on power button) allows restarting the > machine. > > **Note:** Any unsaved work in RAM is lost due to the required hard reset. > > Expected behavior: > - System should suspend and resume properly, like under kernel 6.12.38. > > --- > > Log excerpt (from `journalctl -b -1`): > > Sep 10 07:33:02 computer-id kernel: amdgpu 0000:0b:00.0: amdgpu: MODE1 reset > Sep 10 07:33:02 computer-id kernel: amdgpu 0000:0b:00.0: amdgpu: GPU mode1 > reset > Sep 10 07:33:02 computer-id kernel: amdgpu 0000:0b:00.0: amdgpu: GPU psp mode1 > reset > Sep 10 07:33:02 computer-id kernel: amdgpu 0000:0b:00.0: amdgpu: psp reg > (0x16061) wait timed out, mask: 8000ffff, read: ffffffff exp: 80000000 > > > This strongly suggests the issue is in the amdgpu driver. > > --- > > Reproducibility: > - Always, 100% reproducible. > > Hardware: > CPU: AMD Ryzen 5 3600 > GPU: Radeon RX 5500 XT > > Additional information: > - systemd was upgraded to 258~rc3-1 at the same time, but suspend works fine > when booting into kernel 6.12.38 with the new systemd. > - Logs from the failing suspend attempt (`journalctl -b -1`) are attached in > full. > > Thank you for your work on the Debian kernel! Thanks for your report. Ideally please attach the full kernel log to the bug. Along though I have two questions: Can you please test the current version in unstable (6.16.5-1), is the problem solved there? If not: Can you bisect the upstream changes to isolate the commit which breaks the behaviour? (Do you need rough instructions on how to do it?) Regards, Salvatore
