| Summary: | Kernel 6.2: Logout ends up to a black screen - cannot switch TTY | ||
|---|---|---|---|
| Product: | [KDE Neon] neon | Reporter: | Lassi Väätämöinen <lassi.vaatamoinen> |
| Component: | general | Assignee: | Neon Bugs <neon-bugs> |
| Status: | RESOLVED UPSTREAM | ||
| Severity: | normal | CC: | jr, kde, neon-bugs, sitter |
| Priority: | NOR | ||
| Version First Reported In: | unspecified | ||
| Target Milestone: | --- | ||
| Platform: | Neon | ||
| OS: | Linux | ||
| URL: | https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/2030882 | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
| Attachments: | Journalctl output for kernel 6.2 and 5.19 | ||
Same thing happens when doing "Switch user" from the lock screen. So, anything that requires re-displaying SDDM does not work: logout and switch users. But shutdown and reboot work. SDDM version: 0.20.0-0xneon+22.04+jammy+release+build27 (In reply to Lassi Väätämöinen from comment #2) > SDDM version: > 0.20.0-0xneon+22.04+jammy+release+build27 Tried also downgrading to SDDM 0.19.0-4+22.04+jammy+release+build24, but same issue. Could this be related? From syslog: elo 08 11:58:12 mopo sddm[1113]: Authentication error: SDDM::Auth::ERROR_INTERNAL "Process crashed" elo 08 11:58:12 mopo sddm[1113]: Auth: sddm-helper (--socket /tmp/sddm-auth-a73f10ef-150c-492a-8686-1f364ff8b4a8 --id 1 --start /usr/bin/startplasma-x11 --user vaatala) crashed (exit code 1) elo 08 11:58:12 mopo sddm[1113]: Authentication error: SDDM::Auth::ERROR_INTERNAL "Process crashed" elo 08 11:58:12 mopo sddm[1113]: Auth: sddm-helper exited with 1 elo 08 11:58:12 mopo sddm[1113]: Signal received: SIGTERM Looks like possible KDE Neon kernel issue. I rebooted with the previous kernel, and logout works fine: 5.19.0-46-generic The issue happens with 6.2.0-26-generic Created attachment 160835 [details]
Journalctl output for kernel 6.2 and 5.19
I wonder could it be related to this linux-firmware issue with NVIDIA Turing arch: https://gitlab.freedesktop.org/drm/nouveau/-/issues/207 https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=2e92a49f90f73c8edc44b25c6e669d5e70893c90 Current linux-firmware package in Jammy is: 20220329.git681281e4-0ubuntu3.17 So that would be slightly older than the one where the NVIDIA fix was introduced (3rd April) https://gitlab.freedesktop.org/drm/nouveau/-/issues/207 >Versions with this issue can boot with nomodeset kernel parameter. I added 'nomodeset' to the "linux" -line in Grub for kernel 6.2 and now the logout works. So this looks like it very likely is the firmware issue with Ubuntu Jammy. Reported in Ubuntu Launchpad: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/2030882 |
SUMMARY When logging out of KDE Plasma session, the screen ends up black, with the TTY cursor in upper left corner. Cannot switch TTY, but can reboot with Alt + SysRq + REISUB -sequence STEPS TO REPRODUCE 1. Login to Plasma X11 session 2. logout OBSERVED RESULT Black screen shown. Waiting does not help. EXPECTED RESULT SDDM login greeter should get shown. SOFTWARE/OS VERSIONS Operating System: KDE neon 5.27 KDE Plasma Version: 5.27.7 KDE Frameworks Version: 5.108.0 Qt Version: 5.15.10 Kernel Version: 6.2.0-26-generic (64-bit) Graphics Platform: X11 Processors: 16 × 11th Gen Intel® Core™ i7-11850H @ 2.50GHz Memory: 46,7 GiB of RAM Graphics Processor: Mesa Intel® UHD Graphics Manufacturer: LENOVO Product Name: 20YRS21300 System Version: ThinkPad P15 Gen 2i ADDITIONAL INFORMATION - 'Reboot' and 'Shutdown' options from Plasma X11 session work OK. - I cannot see anything relevant in journalctl for SDDM, but it only shows successful login, but no logout info. - .xsession-errors shows: > kdeinit5_wrapper: Warning: connect(/run/user/1000/kdeinit5__0) failed: : No such file or directory > Error: Can not contact kdeinit5!