This is the solution: http://ubuntuforums.org/showpost.php?p=9878880&postcount=5
:) -- Screen with 4:3 ratio incorrectly detected as having 16:9 ratio https://bugs.launchpad.net/bugs/641525 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati 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