[Bug 87990] New: Error messages (underrun) during bootup

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87990

            Bug ID: 87990
           Summary: Error messages (underrun) during bootup
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: minor
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: nsajko at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 111683
  --> https://bugs.freedesktop.org/attachment.cgi?id=111683&action=edit
kernel log

uname -rm
3.17.6-1-ARCH x86_64
xf86-video-intel 2.99.917
i7-3632QM CPU - Intel® HD Graphics 4000
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09) (prog-if 00 [VGA con
troller])
The errors are:
[    2.888279] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo
underrun on pch transcoder A
[    2.888281] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO
underrun
, and the rest of the kernel log is attached.

I saw at https://01.org/linuxgraphics/documentation/how-report-bugs
that I should pass the drm.debug=0x06 option to the kernel.

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