[Bug 104573] [IGT][SNB only] dmesg-warn [CRTC:37:pipe A] flip_done timed out and vblank wait timed out on crtc 0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104573

--- Comment #12 from russianneuromancer at ya.ru ---
@Elizabeth

> Sporadically appearing.

For me it's very easy to reproduce this bug on Dell 7140 with Linux 4.15 in
Gnome Shell Wayland session. There is two ways of reproducing this: 

1. Let iio-sensor-proxy rotate screen few times in a row.
2. Let Gnome's powermanagement turn off tablet's screen and wait 10-15 minutes
- issue will happen on  screen wakeup.

However, in case it's Broadwell, while I see "[SNB only]" in bugreport title.
Should I fill separate issue or stay here?

Log:

[ 2602.205687] [drm:drm_atomic_helper_wait_for_flip_done [drm_kms_helper]]
*ERROR* [CRTC:37:pipe A] flip_done timed out                                    
[ 2612.445854] [drm:drm_atomic_helper_wait_for_flip_done [drm_kms_helper]]
*ERROR* [CRTC:37:pipe A] flip_done timed out
[ 2621.288552] i2c_hid i2c-SMO91D0:00: i2c_hid_get_input: incomplete report
(53/13568)
[ 2622.686005] [drm:drm_atomic_helper_wait_for_flip_done [drm_kms_helper]]
*ERROR* [CRTC:37:pipe A] flip_done timed out                                    
[ 2634.718161] [drm:drm_atomic_helper_wait_for_flip_done [drm_kms_helper]]
*ERROR* [CRTC:37:pipe A] flip_done timed out
[ 2660.888675] i2c_hid i2c-SMO91D0:00: i2c_hid_get_input: incomplete report
(53/13568)
[ 2664.926594] [drm:drm_atomic_helper_wait_for_flip_done [drm_kms_helper]]
*ERROR* [CRTC:37:pipe A] flip_done timed out

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