It sounds like some component has crashed. Please: 1. Apply the workaround from bug 994921.
2. Reproduce the problem. 3. Look in /var/crash for crash files and then run: ubuntu-bug /var/crash/YOURFILE.crash 4. Tell us here the ID of the new bug created. ** Changed in: gdm3 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1764643 Title: Logout after console use freezes GUI To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1764643/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs