I see nothing for this time/date (2017-09-21 05:35) in the /var/crash. The system didn't indicate there was a problem only saw a partial desktop background screen for 10-20 seconds then the screen when back to the login screen again.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718680 Title: gnome-shell sigfault in libxkbcommon To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1718680/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs