Created attachment 115465 [details] dmesg ==System Environment== -------------------------- Regression: Yes. Good commit: a6631bc8d60d4c3159bc3dd0897664096f9e9ccd. Non-working platforms: Haswell ==kernel== -------------------------- -nightly: 9a4da5ec419897b78c1d4a3949c0c049db5402c5 (fails) drm-intel-nightly: 2015y-04m-28d-14h-41m-15s UTC integration manifest -queued: de4de566f84b87f4d5f8265b11932088adb19896 (fails) drm/i915: Update DRIVER_DATE to 20150423 -fixes: a04f90a33fab74789b91fc9739999012f11022d1 (works) drm/i915/chv: Implement WaDisableShadowRegForCpd ==Bug detailed description== ----------------------------- Since system bootup,dmesg shows "Call Trace" . Dmesg shows [ 4.037561] [drm:check_crtc_state [i915]] *ERROR* mismatch in scaler_state.scaler_id (expected 0, found -1) [ 4.037562] ------------[ cut here ]------------ [ 4.037609] WARNING: CPU: 2 PID: 885 at drivers/gpu/drm/i915/intel_display.c:12008 check_crtc_state+0xb67/0xbd1 [i915]() [ 4.037621] pipe state doesn't match! [ 4.037626] Modules linked in: i915 button video drm_kms_helper drm [ 4.037629] CPU: 2 PID: 885 Comm: kworker/2:1 Not tainted 4.0.0_drm-intel-testing-2015-04-23+ #412 [ 4.037630] Hardware name: LENOVO 20267 /Cherry 3A , BIOS 7CCN15WW 07/24/2013 [ 4.037636] Workqueue: events output_poll_execute [drm_kms_helper] [ 4.037638] 0000000000000000 0000000000000009 ffffffff81795847 ffff88008c5b77f8 [ 4.037640] ffffffff8103bd5a ffff88008c5b77f0 ffffffffa00c907d ffff880002d50000 [ 4.037642] ffff88008c53c000 ffff88008c605000 ffff88008c5b7880 ffff8801553dc400 [ 4.037642] Call Trace: [ 4.037651] [<ffffffff81795847>] ? dump_stack+0x40/0x50 [ 4.037656] [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0 [ 4.037704] [<ffffffffa00c907d>] ? check_crtc_state+0xb67/0xbd1 [i915] [ 4.037707] [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a [ 4.037746] [<ffffffffa00c907d>] ? check_crtc_state+0xb67/0xbd1 [i915] [ 4.037791] [<ffffffffa00d825e>] ? intel_modeset_check_state+0x610/0x9e9 [i915] [ 4.037832] [<ffffffffa00d95b3>] ? intel_crtc_set_config+0x986/0xc19 [i915] [ 4.037845] [<ffffffffa000c314>] ? drm_mode_set_config_internal+0x4e/0xd2 [drm] [ 4.037850] [<ffffffffa0058f99>] ? restore_fbdev_mode+0xac/0xc3 [drm_kms_helper] [ 4.037853] [<ffffffffa005a79a>] ? drm_fb_helper_restore_fbdev_mode_unlocked+0x1e/0x54 [drm_kms_helper] [ 4.037856] [<ffffffffa005a7fe>] ? drm_fb_helper_set_par+0x2e/0x32 [drm_kms_helper] [ 4.037860] [<ffffffffa005a776>] ? drm_fb_helper_hotplug_event+0xa1/0xa7 [drm_kms_helper] [ 4.037864] [<ffffffffa0051e21>] ? output_poll_execute+0x11d/0x158 [drm_kms_helper] [ 4.037868] [<ffffffff8104ca7f>] ? process_one_work+0x1b2/0x31d [ 4.037871] [<ffffffff8104d278>] ? worker_thread+0x24d/0x339 [ 4.037874] [<ffffffff8104d02b>] ? cancel_delayed_work_sync+0xa/0xa [ 4.037876] [<ffffffff81050b25>] ? kthread+0xce/0xd6 [ 4.037879] [<ffffffff81050a57>] ? kthread_create_on_node+0x162/0x162 [ 4.037881] [<ffffffff8179b048>] ? ret_from_fork+0x58/0x90 [ 4.037883] [<ffffffff81050a57>] ? kthread_create_on_node+0x162/0x162 [ 4.037884] ---[ end trace a6300e481db7a40b ]--- ==Bisect results== ---------------------------- Bisect shows: a1b2278e4dfcd2dbea85e319ebf73a6b7b2f180b is the first bad commit. commit a1b2278e4dfcd2dbea85e319ebf73a6b7b2f180b Author: Chandra Konduru <chandra.konduru@intel.com> AuthorDate: Tue Apr 7 15:28:45 2015 -0700 Commit: Daniel Vetter <daniel.vetter@ffwll.ch> CommitDate: Mon Apr 13 11:44:17 2015 +0200 drm/i915: skylake panel fitting using shared scalers Enabling skylake panel fitting feature using shared scalers v2: -added force detach parameter for pfit disable purpose (me) -read crtc scaler state from hw state (Daniel) -replaced both skylake_pfit_enable and disable with skylake_pfit_update (me) -added scaler id check to intel_pipe_config_compare (Daniel) v3: -updated function header to kerneldoc format (Matt) -dropped need_scaling checks (Matt) v4: -move clearing of scaler id from commit path to check path (Matt) -updated colorkey checks based on recent updates (me)
*** This bug has been marked as a duplicate of bug 90059 ***
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