https://bugs.freedesktop.org/show_bug.cgi?id=66963
--- Comment #295 from Alex Deucher alexdeucher@gmail.com --- (In reply to Kyle K from comment #294)
Hello,
I have been having problem with my HD6870 for some time. I experienced it on 4.7/4.8/4.9 kernels (haven't tested earlier). My HD6870 works great out of the box with DPM enabled, I do not have any issues for general use.
Please file your own bug. This bug is for dpm on r6xx hardware. Your hardware is NI.