There is nothing in /var/crash at the date of the crash nor about lightdm. I don't know if this directory is periodically purged, but as I remember, no file was produced.
I will not be able to reproduce the problem before end of august as all users are in summer holidays. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890047 Title: Sessions crash, all X11 remote users disconnected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glib-networking/+bug/1890047/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs