This started less than a month ago, but most of the time when I lock my computer (whether by keyboard command or light-locker timeout) and then unlock it again, the whole session crashes, I’m presented with the greeter again, and when I log in the second time have a new clean session started.
I’m not sure where to go next in trying to find root cause. Here are some snippets from the journal after a login:
systemd: session-c6.scope: Killing process 22396 (lightdm) with signal SIGTERM. systemd: session-c6.scope: Killing process 22407 (slick-greeter) with signal SIGTERM. systemd: Stopping Session c6 of user lightdm. lightdm: pam_unix(lightdm-greeter:session): session closed for user lightdm systemd: Stopped Session c6 of user lightdm. systemd-logind: Removed session c6.
It then continues on killing things with SIGTERM until
systemd: Stopped /run/user/517 mount wrapper. systemd: pam_unix(systemd-user:session): session opened for user lightdm by (uid=0)
and then things start up again. I can attach a more complete log if it would be helpful.
I’m using slick-greeter with lightdm and XFCE. After seeing that log I tried switching to LXDM and it had the same sort of behavior, so that makes me think it’s something with XFCE or X somewhere.
Any ideas on what the next steps should be to find root cause?