[Bug 89492] New: [SNB]igt/kms_setmode/clone-single-crtc cause dmesg warn

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89492

            Bug ID: 89492
           Summary: [SNB]igt/kms_setmode/clone-single-crtc cause dmesg
                    warn
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: hengx.ding at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 114140
  --> https://bugs.freedesktop.org/attachment.cgi?id=114140&action=edit
dmesg

==System Environment==
--------------------------
Non-working platforms: SNB
Regression :No, this issue always exist.
==kernel==
--------------------------
origin/drm-intel-nightly: c2f6e584b215dd0d7e5a8a02716a89e985366ec0(2015-03-08) 


==Bug detailed description==
-----------------------------

igt/kms_setmode/clone-single-crtc will cause dmesg warn

root at x-sgb3:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r |grep
drm|grep '<[1-4]>'
<3>[   73.506848] [drm:ironlake_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun
<3>[   78.546967] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR*
uncleared pch fifo underrun on pch transcoder B
<3>[   78.693750] [drm:ironlake_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun




==Reproduce steps==
---------------------------- 
1. ./kms_setmode --run-subtest clone-single-crtc

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20150309/7c223e8d/attachment-0001.html>