https://bugzilla.kernel.org/show_bug.cgi?id=196337 Bug ID: 196337 Summary: Re-enable GFX PG breaks Carrizo Product: Drivers Version: 2.5 Kernel Version: 4.12.0-09301-g3b06b1a7448e Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@xxxxxxxxxxxxxxxxxxxx Reporter: johannes.hirte@xxxxxxxxxxxxx Regression: No With the current drm updates, my system immediately reboots when X starts. Bisecting pointet me first at 2dc80b00652f2a08f3f1a01e668e3c7ad716f55f is the first bad commit commit 2dc80b00652f2a08f3f1a01e668e3c7ad716f55f Author: Shirish S <shirish.s@xxxxxxx> Date: Thu May 25 10:05:25 2017 +0530 drm/amdgpu: optimize amdgpu driver load & resume time amdgpu_device_resume() & amdgpu_device_init() have a high time consuming call of amdgpu_late_init() which sets the clock_gating state of all IP blocks and is blocking. This patch defers only this setting of clock gating state operation to post resume of amdgpu driver but ideally before the UI comes up or in some cases post ui as well. With this change the resume time of amdgpu_device comes down from 1.299s to 0.199s which further helps in reducing the overall system resume time. V1: made the optimization applicable during driver load as well. TEST:(For ChromiumOS on STONEY only) * UI comes up * amdgpu_late_init() call gets called consistently and no errors reported. Signed-off-by: Shirish S <shirish.s@xxxxxxx> Reviewed-by: Huang Rui <ray.huang@xxxxxxx> Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> :040000 040000 a7c011a1238a16f134e62f7f891660218387f834 66059629924642e897de024bea19d28856e6ae44 M drivers The commit before doesn't work either, but hangs on console with a white cursor when X starts. With a second bisect I came to commit 4fdca894bb3be01829bb620b6157cafee9f956a6 Author: Alex Deucher <alexander.deucher@xxxxxxx> Date: Fri Mar 17 15:27:06 2017 -0400 Revert "drm/amd/amdgpu: Disable GFX_PG on Carrizo until compute issues solved" Re-enable GFX PG. It's working properly with MEC now that KIQ is enabled. Reviewed-by: Samuel Li <samuel.li@xxxxxxx> This reverts commit e9ef19aa1bdeac380662a112f1d03a7c3477527f. Reverting this on (disabling GFX PG again) made my system work again. System is a HP ProBook 645 G2 with an AMD PRO A10-8700B. -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
