Marking this as duplicate of bug #28925, which is generally about the unfortunate need to specify "radeon" manually, generally making Ubuntu experience 0 if one doesn't know how to edit xorg.conf manually.
The monitor issue (640x480 because primary monitor resolutions not detected correctly) is a separate bug, and also known.
Marking this as duplicate of bug #28925, which is generally about the unfortunate need to specify "radeon" manually, generally making Ubuntu experience 0 if one doesn't know how to edit xorg.conf manually.
The monitor issue (640x480 because primary monitor resolutions not detected correctly) is a separate bug, and also known.