I occasionally have similar symptoms on my Dell E6420 with Sandy Bridge graphics. As a workaround, it helps to log in via console or ssh and kill the screensaver process.
-- 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/827531 Title: intel sandy bridge: X session sometimes unrecoverable after screensaver/display powersafe To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/827531/+subscriptions _______________________________________________ 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
