Following the suggestion of Markus (microsome), I've disabled ,,Window Spread'' in unity-tweak-tool under the tab Window Spread. When closing the tweak tool the screen blinked once and afterwards the issue disappeared.
-- 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/1448762 Title: kernel: compiz[4554]: segfault at 48 error 4 in libscale.so To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1448762/+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