This bug seems to be same as: https://bugs.freedesktop.org/show_bug.cgi?id=63900
Workaround: Place the external monitor on the left side and laptop monitor on the right. This way the laptop monitor with "invalid" width won't miss align the picture on the external monitor. ** Bug watch added: freedesktop.org Bugzilla #63900 https://bugs.freedesktop.org/show_bug.cgi?id=63900 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/1280690 Title: 2 pixels shift on the second screen (extended desktop) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1280690/+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