Please try to log in to the machine via ssh first, and start monitoring the system log before reproducing the problem:
journalctl -f
Then reproduce the bug (log in graphically) and let us know what the output from journalctl -f was at the time the bug occurred.
Please try to log in to the machine via ssh first, and start monitoring the system log before reproducing the problem:
journalctl -f
Then reproduce the bug (log in graphically) and let us know what the output from journalctl -f was at the time the bug occurred.