[Bug 75593] [PNV/IVB]igt/kms_flip/dpms-vs-vblank-race fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75593

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #5 from lu hua <huax.lu at intel.com> ---
Test on latest igt and nightly kernel.
It fails on PNV,IVB.HSW,BYT. It works well on ILK, SNB,BDW.

output on BYT:
Using monotonic timestamps
Beginning dpms-vs-vblank-race on crtc 3, connector 20
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
Test assertion failure function run_test_step, file kms_flip.c:928:
Last errno: 2, No such file or directory
Failed assertion: end - start > 1 * frame_time(o) / 2 && end - start < 3 *
frame_time(o) / 2
Subtest dpms-vs-vblank-race: FAIL

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