https://bugzilla.kernel.org/show_bug.cgi?id=116251
Bug ID: 116251 Summary: radeon 5a427809cd9143bef89ee3110f45e84f37484218 "drm/radeon: disable runtime pm on PX laptop" makes dGPU never stop Product: Drivers Version: 2.5 Kernel Version: 4.5.1 Hardware: Intel OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: eugene.shalygin@gmail.com Regression: No
Clevo P177SM, these two GPUs:
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06) 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Neptune XT [Radeon HD 8970M] (rev ff)
With kernel 4.5.1 the Radeon card is always on. Reverting 5a427809cd9143bef89ee3110f45e84f37484218 fixes the problem.