I get the feeling that it has to do with monitor switch/resolution switch between sessions.
Example: I use the work account at the office with 2 lowres screens via a thunderbolt dock. When I'm done for the day, I lock the screen and put the computer to sleep. When I arrive at home, I have some private tasks to do so I open my laptop without any dock and login on my private account. My laptop is Dell XPS13 with hires screen. It works fine. When I'm done I lock the screen and put the computer to sleep. Back at work: I connect my computer to the dock with the two lowres screens and I login to the work account. I get the login screen again. My work session was killed. TLDR; Login to session 1 with 2 lowres screens. Lock screen + sleep Login to other session 2 with laptop screen (hires). Lock screen + sleep Login to session 1 with 2 lowres screens. Crash. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/815996 Title: Desktop occasionally freezes/locks up when switching workspaces To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/815996/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
