This was identified upstream as a dupe of the following bug, which was confirmed fixed back in late 2009.
https://bugs.freedesktop.org/show_bug.cgi?id=22636 ** Bug watch added: freedesktop.org Bugzilla #22636 https://bugs.freedesktop.org/show_bug.cgi?id=22636 ** Changed in: xserver-xorg-video-ati (Ubuntu) Status: Incomplete => Fix Released -- 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/410766 Title: [RV530] Corruption on pixelmator.com (KMS bug) To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/410766/+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