this should be fixed in feisty which now has 1.4.6-0ubuntu1. If you have other issues please open new bugs, since following this one is becoming difficult.
Now that feisty has a valid version, it can be backported to edgy. ** Changed in: xserver-xorg-video-mga (Ubuntu) Status: Confirmed => Fix Released -- Edgy upgrade breaks multiple Matrox cards https://launchpad.net/bugs/58721 -- ubuntu-backports mailing list ubuntu-backports@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-backports