Plugging the monitor back in now returns the screen to normal. I'm attaching video of the corruption.
** Attachment added: "video of screen corruption from unplugging external monitor on T410s" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1157678/+attachment/3588743/+files/2013-03-21-140153.webm -- 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/1157678 Title: unplugging an external monitor from laptop results in corrupted screen. Logging out fixes it. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1157678/+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