[Bug 83471] New: [SNB Regression]igt/kms_flip some subcases fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83471

          Priority: high
            Bug ID: 83471
          Keywords: bisect_pending
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [SNB Regression]igt/kms_flip some subcases fail
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 105712
  --> https://bugs.freedesktop.org/attachment.cgi?id=105712&action=edit
dmesg

==System Environment==
--------------------------
Regression: Yes. 
Good commit on -next-queued: c1f7ab8c9a7b09f4ed6499904298ddf1c67b1764
On good commit, here has another bug 82232

Non-working platforms: SNB

==kernel==
--------------------------
origin/drm-intel-nightly: 2b1159961e4bc38a9090f8ec0ab6f16701dbdf81(fails)
     drm-intel-nightly: 2014y-09m-02d-22h-46m-37s integration manifest
origin/drm-intel-next-queued: d5f0b5cb412003274cde50b0583727d0c33bf6e4(fails)
    drm: Remove old defines for vswing and pre-emph values
origin/drm-intel-fixes: bbfb44e8b688e778964275ab0862f67463ba4f84(another bug
82232)
    drm/i915: Fix lock dropping in intel_tv_detect()

==Bug detailed description==
igt/kms_flip some subcases fail.
Here has a similar bug 82751 before.

Case list:
igt/kms_flip/vblank-vs-dpms-suspend
igt/kms_flip/vblank-vs-dpms-suspend-interruptible
igt/kms_flip/vblank-vs-modeset-suspend
igt/kms_flip/vblank-vs-modeset-suspend-interruptible


Output:
[root at x-sgb4 tests]# ./kms_flip --run-subtest vblank-vs-dpms-suspend
IGT-Version: 1.7-gf473a55 (i686) (Linux:
3.17.0-rc2_drm-intel-nightly_2b1159_20140903+ i686)
Using monotonic timestamps
Beginning vblank-vs-dpms-suspend on crtc 8, connector 14
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x48 148500
.rtcwake: wakeup from ""mem"" using /dev/rtc0 at Thu Sep  4 10:03:14 2014
.rtcwake: wakeup from ""mem"" using /dev/rtc0 at Thu Sep  4 10:03:46 2014
Test assertion failure function check_state, file kms_flip.c:555:
Failed assertion: timercmp(&es->last_received_ts, &es->current_ts, <)
vblank ts before the vblank was issued!
timerdiff -1s, 990389us
Subtest vblank-vs-dpms-suspend: FAIL

Reproduce steps:
-------------------------
1. ./kms_flip --run-subtest vblank-vs-dpms-suspend

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