I have a RADEON HD 5570, and have been stuck on driver version 12.8 for months now. Any time I try to update to a newer version, my display goes wonky - hard to describe, but colors go out of whack, vertical lines across the entire screen, etc. Once I remove the newer package and restore the 12.8 package, all returns to normal. I have tried completely removing all AMD software and installing newer software from scratch and I get the same issue. It seems as though I am forever stuck on 12.8...
Thoughts on this? I don't think it would be a bard card, as everything runs just fine at 12.8.
EDITED: this thread has an image of what happens with my display