[Bug 90516] New: [IVB]Igt/kms_flip subtest vblank-vs-dpms-suspend fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90516

            Bug ID: 90516
           Summary: [IVB]Igt/kms_flip subtest vblank-vs-dpms-suspend fail
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: yex.tian at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 115897
  --> https://bugs.freedesktop.org/attachment.cgi?id=115897&action=edit
dmesg info with drm.debug=0x1e log_buf_len=16M

System Environment:       
-----------------------------------------------------
Regression:  not sure
Non-working platforms: IVB

==Kernel==
--------------------------------------------------
commit 056608cba30c118dcd3dff3cd0a4cacbdfd9ecdb
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Mon May 18 17:19:30 2015 +0200

    drm-intel-nightly: 2015y-05m-18d-15h-18m-36s UTC integration manifest

==description==
Igt/kms_flip subtest vblank-vs-dpms-suspend fail on IVB.
Subcase list:
igt at kms_flip@vblank-vs-dpms-suspend-interruptible 
igt at kms_flip@vblank-vs-suspend 
igt at kms_flip@vblank-vs-suspend-interruptible

==Output==
[root at x-ivb6 tests]# ./kms_flip --run-subtest vblank-vs-dpms-suspend
IGT-Version: 1.10-g5253af9 (x86_64) (Linux:
4.1.0-rc3_drm-intel-nightly_056608_20150519+ x86_64)
Using monotonic timestamps
Beginning vblank-vs-dpms-suspend on crtc 20, connector 30
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x48 148500
.rtcwake: wakeup from "mem" using /dev/rtc0 at Tue May 19 19:16:26 2015
.rtcwake: wakeup from "mem" using /dev/rtc0 at Tue May 19 19:16:58 2015
Test assertion failure function check_state, file kms_flip.c:640:
Failed assertion: timercmp(&es->last_received_ts, &es->current_ts, <)
vblank ts before the vblank was issued!
timerdiff -1s, 994391us
Stack trace:
  #0 [__igt_fail_assert+0xf1]
  #1 [check_state+0x271]
  #2 [run_test_on_crtc_set.constprop.13+0xafc]
  #3 [run_test+0x25a]
  #4 [main+0x284]
  #5 [__libc_start_main+0xf5]
  #6 [_start+0x29]
  #7 [<unknown>+0x29]
Subtest vblank-vs-dpms-suspend failed.
**** DEBUG ****
Test requirement passed: (flags & TEST_HANG) == 0 || !is_hung(drm_fd)
Test requirement passed: modes
Beginning vblank-vs-dpms-suspend on crtc 20, connector 30
igt_create_fb_with_bo_size(width=1920, height=1080, format=0x34325258 [bpp=32],
tiling=0x0, size=0
igt_create_fb_with_bo_size(handle=2, pitch=7680)
igt_create_fb_with_bo_size(width=1920, height=1080, format=0x34325258 [bpp=32],
tiling=0x0, size=0
igt_create_fb_with_bo_size(handle=3, pitch=7680)
igt_create_fb_with_bo_size(width=1920, height=1080, format=0x34325258 [bpp=32],
tiling=0x100000000000001, size=0
igt_create_fb_with_bo_size(handle=4, pitch=8192)
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x48 148500
Test requirement passed: !igt_run_in_simulation()
Test requirement passed: !igt_run_in_simulation()
Test assertion failure function check_state, file kms_flip.c:640:
Failed assertion: timercmp(&es->last_received_ts, &es->current_ts, <)
vblank ts before the vblank was issued!
timerdiff -1s, 994391us
****  END  ****
Subtest vblank-vs-dpms-suspend: FAIL (2.443s)


Reproduce steps:
----------------------------

1, ./kms_flip --run-subtest vblank-vs-dpms-suspend

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