On 01/07/2015 09:51 PM, Deucher, Alexander wrote: > >> -----Original Message----- >> From: Joseph Salisbury [mailto:joseph.salisbury@xxxxxxxxxxxxx] >> Sent: Wednesday, January 07, 2015 5:51 PM >> To: Deucher, Alexander >> Cc: stable@xxxxxxxxxxxxxxx; LKML; Koenig, Christian; David Airlie; dri-devel >> Subject: [Regression][v3.17][3.18][3.19-rc3] drm/radeon: re-enable dpm by >> default on BTC >> >> Hi Alexander, >> >> A kernel bug report was opened against Ubuntu [0]. After a kernel >> bisect, it was found that reverting the following commit resolved this bug: >> >> commit c08abf11900e19b14dd3a0cc3d105bd74519cd18 >> Author: Alex Deucher <alexander.deucher@xxxxxxx> >> Date: Mon Jul 14 12:01:40 2014 -0400 >> >> drm/radeon: re-enable dpm by default on BTC >> >> The regression was introduced as of v3.17-rc1 and still exists in >> current mainline. It has also made it's way into the stable releases. >> >> I was hoping to get your feedback, since you are the patch author. Do >> you think gathering any additional data will help diagnose this issue, >> or would it be best to submit a revert request? >> > Does revering b2dccf24e77 help? I'd hate to revert this patch because it disables power management for a whole family of chips. If it doesn't help I'd prefer to just add a quirk to disable it for the specific problematic board. We'll test and let you know. Thanks for the feedback, Alex! > > Alex > >> Thanks, >> >> Joe >> >> [0] http://pad.lv/1386534 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
