13.3 beta 3 is the first to support ubuntu 13.04 (the 3.7x kernal/newest xorg) and 13.3 beta 3 doesn't run on 12.04.2.... i guess i could give 12.10 a shot if i have  time later.

EDIT: I've found that repeated reboots/relunches of bitminter can get the gpu to be detected
But it seams to be a 1 in 5 shoot.... well can't complain works for now.