This is *very* much likely a dupe of https://bugs.launchpad.net/ubuntu/natty/+source/unity/+bug/740126
Can you try a ubuntu classic (safe) session to see if it happens there to confirm? You can run xset dpms force off from a terminal a bunch of times to force the dpms off event faster instead of waiting for gnome-power- manager to turn it off from idling. Alternatively you can test this kernel with the proposed fix for it in a unity session http://kernel.ubuntu.com/~sarvatt/raof/ ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/753977 Title: [gm45] Xorg freeze - regression starting around Apr 3rd-4th, 2011 _______________________________________________ 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
