[Bug 73037] [BYT]igt/many kms_flip subcases randomly fail with *ERROR* failed to train DP, aborting

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73037

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|VERIFIED                    |REOPENED
         Resolution|FIXED                       |---

--- Comment #9 from lu hua <huax.lu at intel.com> ---
Sorry, Reopen it.
run ./kms_flip --run-subtest wf_vblank-vs-dpms-interruptible, this error goes
away.

run ./kms_flip  --run-subtest absolute-wf_vblank-interruptible, it still has
this issue.
output:
IGT-Version: 1.5-g81ade89 (x86_64) (Linux:
3.13.0_drm-intel-nightly_1be8f2_20140226+ x86_64)
Using monotonic timestamps
Beginning absolute-wf_vblank-interruptible on crtc 3, connector 20
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
...........................................................................................
absolute-wf_vblank-interruptible on crtc 3, connector 20: PASSED

Beginning absolute-wf_vblank-interruptible on crtc 6, connector 20
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
...........................................................................................
absolute-wf_vblank-interruptible on crtc 6, connector 20: PASSED

Subtest absolute-wf_vblank-interruptible: SUCCESS

dmesg -r | egrep "<[1-3]>" |grep drm
<3>[  346.945826] [drm:intel_dp_start_link_train] *ERROR* failed to enable link
training
<3>[  348.046878] [drm:intel_dp_complete_link_train] *ERROR* failed to train
DP, aborting
<3>[  349.065782] [drm:valleyview_pipestat_irq_handler] *ERROR* pipe A underrun
<3>[  349.068277] [drm:intel_pipe_config_compare] *ERROR* mismatch in
has_dp_encoder (expected 1, found 0)

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