https://bugs.freedesktop.org/show_bug.cgi?id=76130
--- Comment #14 from Adrien Prost-Boucle adrien.prost-boucle@laposte.net --- On my machine this only visible thing this radeon.dpm=0 does is to silent the error message at resume from sleep. I see no graphic perf increase (at least with glxgears) and still scrolling issue for the app that had it (assuming it is actually related to graphics).