Comment # 13 on bug 74420 from Alex Deucher

(In reply to comment #12)
> (In reply to comment #10)
> > Please try eliminating some variables, e.g.: Does it also happen with
> > radeon.dpm=0? Does it also happen if you disable / enable compositing? ...
> 
> 
> 
> I will try radeon.dpm=0 when I get a chance. Can I use dynpm then, or better
> not to avoid skewing the results?

Just disable dpm for now.