[Bug 83042] New: [HSW Regression]igt/pm_lpsp/non-edp fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83042

          Priority: high
            Bug ID: 83042
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW Regression]igt/pm_lpsp/non-edp fails
        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 105215
  --> https://bugs.freedesktop.org/attachment.cgi?id=105215&action=edit
dmesg

==System Environment==
--------------------------
Regression: Yes. 
Results of nightly test(13/8) were passed.
I am unable to find good commit on both kernel and IGT

Non-working platforms: HSW

==kernel==
--------------------------
origin/drm-intel-nightly: 257d90d13794c2eb545ab0d6c708f21e2a0378b6(fails)
    drm-intel-nightly: 2014y-08m-21d-10h-03m-09s integration manifest
origin/drm-intel-next-queued: 3a5f87c286515c54ff5c52c3e64d0c522b7570c0(skips)
    drm: fix plane rotation when restoring fbdev configuration
origin/drm-intel-fixes: 1a125d8a2c22b11741fc47d4ffcf7a5ffa044dd3(skips)
    drm/i915: don't try to retrain a DP link on an inactive CRTC

==Bug detailed description==
igt/pm_lpsp/non-edp fails

Output:
[root at x-hsw24 tests]# ./pm_lpsp --run-subtest non-edp
IGT-Version: 1.7-g4d2f511 (x86_64) (Linux:
3.17.0-rc1_drm-intel-nightly_257d90_20140825+ x86_64)
Test assertion failure function kmstest_unset_all_crtcs, file igt_kms.c:673:
Failed assertion: rc == 0
Last errno: 13, Permission denied
Subtest non-edp: FAIL

==Reproduce steps==
---------------------------- 
1. ./pm_lpsp --run-subtest non-edp

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