https://bugs.freedesktop.org/show_bug.cgi?id=76490
--- Comment #25 from dex+fdobugzilla@dragonslave.de --- Created attachment 112040 --> https://bugs.freedesktop.org/attachment.cgi?id=112040&action=edit Patch for force lower mclk
I did some clock bisecting and came to the conclusion that (at least on my card) a memclock of 1200 Mhz is the highes stable.
With the attached patch DPM is stable for me.
Could this have something todo with the card having 4Gb of VRAM?