[Bug 81319] New: [BDW]igt/pm_rc6_residency/rc6-residency-counter fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81319

          Priority: medium
            Bug ID: 81319
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BDW]igt/pm_rc6_residency/rc6-residency-counter 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 102737
  --> https://bugs.freedesktop.org/attachment.cgi?id=102737&action=edit
dmesg

==System Environment==
--------------------------
Regression: No
The test always fail, and here has another Bug 73041 for pm_rc6_residency

Non-working platforms: BDW

==kernel==
--------------------------
origin/drm-intel-nightly: 271bff129a641b5b35d99c9eb0ceb866ca42f692(fails)
    drm-intel-nightly: 2014y-07m-12d-12h-07m-51s integration manifest
origin/drm-intel-next-queued: 491a3448622059b087d8c465b46b11f2953df7c1(fails)
    drm/i915: Enable PSR by default.
origin/drm-intel-fixes: ceb9f032dc858c349d7d213454c5ba2c6ef9c5e5(fails)
    Revert "drm/i915: Don't set the 8to6 dither flag when not scaling"

==Bug detailed description==
igt/pm_rc6_residency/rc6-residency-counter fails

Output:
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
./pm_rc6_residency --run-subtest rc6-residency-counter
IGT-Version: 1.7-ge74dd22 (x86_64) (Linux:
3.16.0-rc4_drm-intel-nightly_271bff_20140713+ x86_64)
This machine doesn't support rc6pp
This machine doesn't support rc6p
The residency counter: 1.003667
Test assertion failure function rc6_residency_counter, file
pm_rc6_residency.c:128:
Failed assertion: (flag_counter != 0) && (counter_result <=1)
Sysfs RC6 residency counter is inaccurate.
Subtest rc6-residency-counter: FAIL

==Reproduce steps==
---------------------------- 
1. ./pm_rc6_residency --run-subtest rc6-residency-counter

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