https://bugs.freedesktop.org/show_bug.cgi?id=66963
--- Comment #257 from Maciej Gluszek info@maciejgluszek.com --- @Guram Savinov: I also tried setting DPM + high performance for my HD3650 and it worked but the fan was still running too loud (not overheating just loud).
Then i installed Kernel 4.0, removed "high performance" settings and it works great now. I still have DPM set during boot but no more setting the card to be running on high performance. Couple of days and no lockups.
I'm on Ubuntu.