[Bug 89101] New: [SKL]clean boot system report *ERROR* CPU pipe A FIFO underrun

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89101

            Bug ID: 89101
           Summary: [SKL]clean boot system report *ERROR* CPU pipe A FIFO
                    underrun
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: high
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: huax.lu at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 113395
  --> https://bugs.freedesktop.org/attachment.cgi?id=113395&action=edit
dmesg

System Environment:
--------------------------
Regression: not sure

no-working platforms: SKL

==kernel==
--------------------------
drm-intel-nightly/2a579576e4c01799ec67264c9169e5adeadcc3ff
commit 2a579576e4c01799ec67264c9169e5adeadcc3ff
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Wed Feb 11 17:16:34 2015 +0100

    drm-intel-nightly: 2015y-02m-11d-16h-11m-28s UTC integration manifest

==Bug detailed description==
-----------------------------
clean boot system with drm-intel-nightly kernel., report *ERROR* CPU pipe A
FIFO underrun 

root at x-skly06:/GFX/Test/Piglit/piglit# dmesg -r|egrep "<[1-4]>"|grep drm
<3>[    3.297286] [drm:gen8_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun

==Reproduce steps==
---------------------------- 
1. clean boot system
2. dmesg -r|egrep "<[1-4]>"|grep drm

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