Judging from christobzr's Xorg.0.log.old this is a duplicate of bug #358365, there is a full backtrace in that bug report.
-- [g41] When watching video, any window over video causes corrupt display and crash https://bugs.launchpad.net/bugs/353397 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
