Thanks for that. The log in comment #12 shows these errors which may
explain it:
--------
Mär 22 01:57:12 aletheia systemd[1]: systemd-logind.service: Watchdog timeout
(limit 3min)!
Mär 22 01:57:12 aletheia systemd[1]: systemd-logind.service: Killing process
1501 (systemd-logind) with signal SIGABRT.
...
Mär 22 01:57:12 aletheia systemd[1]: systemd-logind.service: Main process
exited, code=killed, status=6/ABRT
...
Mär 22 01:57:13 aletheia /usr/lib/gdm3/gdm-x-session[2486]: (EE)
Mär 22 01:57:13 aletheia /usr/lib/gdm3/gdm-x-session[2486]: Fatal server error:
Mär 22 01:57:13 aletheia /usr/lib/gdm3/gdm-x-session[2486]: (EE)
systemd-logind disappeared (stopped/restarted?)
...
Mär 22 01:57:13 aletheia systemd-logind[95934]: Failed to restore VT,
ignoring: Bad file descriptor
--------
And yes we expect "Fn+Ctrl+Alt+F??" to fail in this case because the
processes which implement that combo have failed.
To be sure we're on the right track, please reboot, wait for the bug to
occur again, and then redo:
journalctl -b-1 > prevboot.txt
** Also affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Changed in: systemd (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1965219
Title:
gnome lock screen does not permit reentering password
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