I have a laptop radeon HD 4250 (RS880) - hp dv6-3210US.
Tried catalyst 12.6 x64, legacy - installs fine but I get a blank screen - no error in xorg log.
catalyst 12.4, with the build fixes that worked on 12.1 - installs fine. Blank screen again. This time xserver shows segfault in log.
opensuse 12.2 rc2 x64.