https://bugs.freedesktop.org/show_bug.cgi?id=74420
--- Comment #13 from Alex Deucher agd5f@yahoo.com --- (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.