The system is up to date. Unfortunately the problem persist. I'm Sorry, I have added old syslog file in previous post. Please find attached syslog from today morning, logs starting on the time of crash.
** Attachment added: "syslog" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1717170/+attachment/4952000/+files/syslog -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1717170 Title: Gnome-shell session crash after monitor switch-off/input change. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1717170/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs