[Bug 72864] New: [BYT/BDW]igt/kms_cursor_crc fails with eDP

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72864

          Priority: medium
            Bug ID: 72864
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BYT/BDW]igt/kms_cursor_crc fails with eDP
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 90970
  --> https://bugs.freedesktop.org/attachment.cgi?id=90970&action=edit
dmesg

System Environment:
--------------------------
Platform: BYT/BDW
kernel:   (drm-intel-nightly)02905525c3310ba673676f8041d0ff6be4da0e24

Bug detailed description:
---------------------------
It fails on BYT and BDW with eDP, If connect VGA, It works well.
I can't find out a good commit.

run ./kms_cursor_crc --run-subtest cursor-black-invisible-offscreen
output:
IGT-Version: 1.5-g2a71bff (x86_64) (Linux:
3.13.0-rc4_drm-intel-nightly_074fdf_20131219+ x86_64)
Beginning cursor-black-invisible-offscreen on crtc 3, connector 20
.Test assertion failure function do_single_test, file kms_cursor_crc.c:147:
Last errno: 0, Success
Failed assertion: igt_crc_equal(&crcs[0], &test_data->ref_crc)
Subtest cursor-black-invisible-offscreen: FAIL

Reproduce steps:
-------------------------
1. ./kms_cursor_crc --run-subtest cursor-black-invisible-offscreen

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