If you need a testbed just install gnome-session-flashback in a 14.04 virtualbox vm.
I tried using it and had the exact same issues as on my desktop. I used the latest virtualbox from the 14.04 repos/no usb/ no guest tools It shipped broken. I read in another place that there was a new compiz in staging with large feature changes. Could this relate? -- 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