Hi Maximilian, On Fri, May 01, 2020 at 11:56:00AM +0200, Maximilian Stein wrote: > Package: src:linux > Version: 5.5.17-1 > Severity: normal > > Dear maintainer, > > Occasionally my system freezes after waking up from suspend-to-ram. > More precisely, the KDE lock screen appears, I can type my passphrase, > but then the screen just stays black leaving me movable mouse. I > neither can switch to a virtual terminal (Strg+Alt+F1 etc.) nor kill > the session with SysRq+K. Rebooting with SysRqs still works though. > > Investigating the issues in the kernel logs reveals a message > indicating a NULL ptr derefererence in the kernel that is related to > IRQ (see below). > > My device was in suspend-to-ram since yesterday so the attached log > includes all messages since I opened the laptop lid. It was generated > using: > > journalctl -b-1 --dmesg --since today --quiet --no-hostname --grep > '^(?!iptables:)' > > Such freezes happen about once a week and since I got the device (so > it also happened with older kernels). > > The device is a Lenovo X1 Carbon 6th Generation with an Intel > i7-8650U with up-to-date BIOS running Debian Testing. > > Any help is highly appreciated.
A similar report was done in SuSE https://bugzilla.suse.com/show_bug.cgi?id=1129258 Can you check if hte issue ist still present with a more recent kernel, ideally test up to 5.8.7-1 in unstable. If the issue is still present, it might be woth reporting it directly upstream to the linux-...@vger.kernel.org list. Regards, Salvatore