[Bug 74102] [ILK/SNB/IVB/HSW Regression]igt/testdisplay causes *ERROR* Pipe A FIFO underrun

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74102

--- Comment #9 from dhead666 <myfoolishgames at gmail.com> ---
Created attachment 111055
  --> https://bugs.freedesktop.org/attachment.cgi?id=111055&action=edit
testdisplay on 2955U

I'm not sure if related but I'm getting the message "*ERROR* uncleared fifo
underrun on pipe A" although not with testdisplay.

for detailed post about my issue see here
https://bugs.freedesktop.org/show_bug.cgi?id=83677#c151

I've attached the log output when running testdisplay, first with only the
laptop screen and second with external hdmi screen (motorola lapdock atrix)

please let me know if I should open a new bug report.

system: acer c720, intel 2955U
distro: arch linux, x86_64
kernel: 3.18.0 + 2 patches fixing #83677
(https://bugs.freedesktop.org/show_bug.cgi?id=83677), see last two commits
here: https://github.com/fritsch/linux/commits/3.18.0
xf86-video-intel: 2.99.916
mesa-dri: 10.3.5
xorg-server: 1.16.2

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