[Bug 103712] [CI] igt@* - incomplete - timeout/Softdog - *ERROR* [CRTC:37:pipe A] flip_done timed out - WARNING: CPU: 7 PID: 2601 at drivers/gpu/drm/drm_vblank.c:1071 drm_wait_one_vblank+0x179/0x180

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103712

--- Comment #37 from Elizabeth <elizabethx.de.la.torre.mena at intel.com> ---
Created attachment 136053
  --> https://bugs.freedesktop.org/attachment.cgi?id=136053&action=edit
Kern_log_FF_SNB

Hello, I do believe we're facing the same issue on our SNB. Dmesg is filled
with 

[ 1443.812215] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]]
*ERROR* [CONNECTOR:48:VGA-1] flip_done timed out
[ 1454.052222] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]]
*ERROR* [CONNECTOR:56:DP-1] flip_done timed out
[ 1464.292198] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]]
*ERROR* [PLANE:28:primary A] flip_done timed out
[ 1474.532217] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]]
*ERROR* [PLANE:38:primary B] flip_done timed out
[ 1484.772244] [drm:drm_atomic_helper_wait_for_flip_done [drm_kms_helper]]
*ERROR* [CRTC:37:pipe A] flip_done timed out
[ 1495.012211] [drm:drm_atomic_helper_wait_for_flip_done [drm_kms_helper]]
*ERROR* [CRTC:47:pipe B] flip_done timed out

Also reaching 3 of those:
[ 1061.204233] vblank wait timed out on crtc 0
[ 1061.204286] WARNING: CPU: 6 PID: 23152 at drivers/gpu/drm/drm_vblank.c:1073
drm_wait_one_vblank+0x18d/0x1a0 [drm]
[ 1061.204318] RIP: 0010:drm_wait_one_vblank+0x18d/0x1a0 [drm]
[ 1308.360218] vblank wait timed out on crtc 0
[ 1308.360269] WARNING: CPU: 7 PID: 29987 at drivers/gpu/drm/drm_vblank.c:1073
drm_wait_one_vblank+0x18d/0x1a0 [drm]
[ 1308.360302] RIP: 0010:drm_wait_one_vblank+0x18d/0x1a0 [drm]
[ 1308.784212] vblank wait timed out on crtc 1
[ 1308.784249] WARNING: CPU: 7 PID: 29987 at drivers/gpu/drm/drm_vblank.c:1073
drm_wait_one_vblank+0x18d/0x1a0 [drm]
[ 1308.784289] RIP: 0010:drm_wait_one_vblank+0x18d/0x1a0 [drm]

Though automation only caught it with test
igt at kms_setmode@basic-clone-single-crtc:
IGT-Version: 1.20-g39ac6b8 (x86_64) (Linux:
4.15.0-rc2-drm-intel-qa-ww49-commit-b5f297e0+ x86_64)
Testing: basic-clone-single-crtc 2 connector combinations
Subtest basic-clone-single-crtc: SUCCESS (61.387s)

Dmesg:
[ 1256.932261] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]]
*ERROR* [CRTC:37:pipe A] flip_done timed out
[ 1267.172219] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]]
*ERROR* [CONNECTOR:48:VGA-1] flip_done timed out
[ 1277.412239] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]]
*ERROR* [PLANE:28:primary A] flip_done timed out
[ 1287.652228] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]]
*ERROR* [CRTC:47:pipe B] flip_done timed out
[ 1297.892217] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]]
*ERROR* [CONNECTOR:56:DP-1] flip_done timed out
[ 1308.132236] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]]
*ERROR* [PLANE:38:primary B] flip_done timed out
[ 1308.360215] ------------[ cut here ]------------
[ 1308.360218] vblank wait timed out on crtc 0
[ 1308.360269] WARNING: CPU: 7 PID: 29987 at drivers/gpu/drm/drm_vblank.c:1073
drm_wait_one_vblank+0x18d/0x1a0 [drm]
...

I'll attach kern.log if issue is not related I'll open a new bug. Thank you.

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