Comment # 10
on bug 82201
from Kai
(In reply to comment #8) > dpm is enabled by default for hawaii asics. You shouldn't need to force it > on the command line. forcing it just enabled additional debugging output. I can only state, that by setting radeon.dpm=1 I get 60 FPS in e.g. Portal 2 and without I'm at 15 FPS max. As written in comment #0, I've built your drm-next-3.17-rebased-on-fixes branch, my top commit is commit fa783807977da98da35590fd1d5efdfd4f33fd59 Author: Christian König <christian.koenig@amd.com> Date: Mon Jul 28 13:30:12 2014 +0200 drm/radeon: allow userptr write access under certain conditions It needs to be anonymous memory (no file mappings) and we are requried to install an MMU notifier. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> I even went through several reboots, switching between "with radeon.dpm=1" and without. All showed the same result. Let me know, if there is something else, I can do to assist in debugging this.
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