I have the same problem in 14.04. As mentioned at https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1301623 it is possible to reproduce the problem by dragging around windows in the workspace switcher, grabbing them by the title bar (especially, it seems, by the bubble buttons in the title bar), and I can regain control by pressing super+S, exiting the workspace switcher.
-- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in 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 _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp
