(In reply to Jaakko Niemi from comment #5)
> I can repro this reliably.
> 
> [AMD/ATI] Tahiti PRO [Radeon HD 7950/8950 OEM / R9 280]
> Kernel 4.6 drm-next, LLVM 3.8
> 
> These days I just get hung screen, audio keeps playing on background, I can
> ssh in and reboot. 
> 
> This happens only with SC2, I don't see problems with other games. Typically
> I don't even get halfway through campaign mission, sometimes I get crash
> when the game is playing video (assuming it's done through the engine...).
> 
> --

Oh, and Mesa is 12.0 rc1.