I just got the problem in 12.10 for the first time. I have a dual-screen setup at a Radeon HD 2600XT (I know). My main screen is horizontal, the secondary screen is vertical. This setup did work in 12.04. In 12.10 my GNOME Shell opens with a grey decorationless window on the left (see attached downscaled screenshot). I can use a context menu to copy the text in it out and into an editor, which reveals a localized version of the messages other users get. The fun thing is: the screen setup is 100% working - resolution, aspect, everything. But I still get the annoying window - and closing it isn't easy because there are no window decorations.
** Attachment added: "Strange login result" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/931240/+attachment/3449714/+files/screenshot1.png -- 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/931240 Title: Triple head on Ubuntu 11.10 with AMD Radeon HD 6470M not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/931240/+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