https://bugs.freedesktop.org/show_bug.cgi?id=66963
--- Comment #122 from Bryan Quigley gquigs+bugs@gmail.com --- (In reply to comment #116)
Does disabling any of the dpm features as per comment 94 help?
Nope, still broken. (although I did get distracted by a hang that was fixed by the latest drm pull && I thought it was fixed at one point, but it seems I may have mistyped radeon.dpm.. )