Thanks for the bug report. I can see bug 1968040 in the log, but that also shows that atomic KMS is in use whereas this bug should be about non-atomic KMS failing (MUTTER_DEBUG_FORCE_KMS_MODE=simple).
Please check for any crashes using https://wiki.ubuntu.com/Bugs/Responses#Missing_a_crash_report_or_having_a_.crash_attachment Please also collect a system log from when MUTTER_DEBUG_FORCE_KMS_MODE=simple was in use. If it was the previous boot then run: journalctl -b-1 > prevboot.txt and attach the resulting text file here. ** Summary changed: - Laptop screen can't be turned on after suspension or locking + Can't log in anymore after setting MUTTER_DEBUG_FORCE_KMS_MODE=simple ** Tags added: hybrid i915 multigpu nvidia ** Package changed: gnome-shell (Ubuntu) => mutter (Ubuntu) ** Changed in: mutter (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1994000 Title: Can't log in anymore after setting MUTTER_DEBUG_FORCE_KMS_MODE=simple To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1994000/+subscriptions -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
