[Bug 90368] New: [SNB bisected]Igt/kms_3d fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90368

            Bug ID: 90368
           Summary: [SNB bisected]Igt/kms_3d fails
           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 115628
  --> https://bugs.freedesktop.org/attachment.cgi?id=115628&action=edit
dmesg info

==System Environment==       
-----------------------------------------------------
Regression: Yes
Non-working platforms: SNB

==Kernel==
--------------------------------------------------
commit 20e7fca46c6d1598a9720f3b0b06acb982919cf8
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Thu May 7 18:16:42 2015 +0200

    drm-intel-nightly: 2015y-05m-07d-16h-16m-10s UTC integration manifest

==Bug detailed description==
--------------------------------------------------
Igt/kms_3d fails on SNB.
It’s kernel regression, By bisected, show the first bad commit is 8b80c00.

commit 8b80c007b40eed22b6af215eb3dfac42d8276b09
Author:     Ville Syrjälä <ville.syrjala at linux.intel.com>
AuthorDate: Thu Apr 2 17:02:11 2015 +0300
Commit:     Daniel Vetter <daniel.vetter at ffwll.ch>
CommitDate: Wed May 6 16:40:24 2015 +0200

    drm/edid: Add DMT modes with ID > 0x50

    DMT Version 1.0, Rev. 13 lists a bunch of new modes we don't currently
    have in our dmt mode table. So add them.

    The order may look a bit weird since it's not sorted based on the DMT
    ID, but this is the order they appear in the standard. I suppose they
    are ordered by the resolution, pixel clock, or some such factor. I
    decided that it's perhaps best to keep the same order as the spec.


==output==
-----------------------------
root at x-sgb3:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./kms_3d
IGT-Version: 1.10-g3be5920 (x86_64) (Linux:
4.1.0-rc2_drm-intel-nightly_20e7fc_20150508+ x86_64)
Test assertion failure function __real_main31, file kms_3d.c:77:
Failed assertion: mode_count == 15
Stack trace:
  #0 [__igt_fail_assert+0xf1]
  #1 [main+0x193]
  #2 [__libc_start_main+0xf5]
  #3 [_start+0x29]
  #4 [<unknown>+0x29]
Test kms_3d failed.
**** DEBUG ****
(kms_3d:4730) drmtest-DEBUG: Test requirement passed: fd >= 0
Test requirement passed: fd >= 0
Test requirement passed: drmSetMaster(fd) == 0
Test requirement passed: connector
Connector HDMI-A-1/force is now forced on
Current forced connectors:
        HDMI-A-1/force
Test assertion failure function __real_main31, file kms_3d.c:77:
Failed assertion: mode_count == 15
****  END  ****
FAIL (0.002s)


==Reproduce steps==
----------------------------
1,./kms_3d

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