thank you for your bug report, that seems a video driver issue rather than a gdm bug
** Package changed: gdm (Ubuntu) => xorg-server (Ubuntu) -- VDU Display fails just before login screen https://bugs.launchpad.net/bugs/619994 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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