[Bug 70254] [snb dp hotplug] Pipe B, PCH transcoder B FIFO underrun

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70254

--- Comment #6 from Robert N <crshman at gmail.com> ---
Hey Jani,

So I grabbed the latest intel drm kernel from here:

http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-nightly/current/

In particular, linux-image-3.12.0-994-generic_3.12.0-994.201310150447_amd64

I tried it again...this time I booted with my two DP monitors plugged in.
Started up fine, logged in...still good.

I switched the active workspace a few times left/right and then the first
monitor blanked.

I did it a few more times and then the second monitor blanked.

I then physically undocked the laptop, detaching both screens and everything
else, to send the captured system reports.

Here is a copy of the apport log dump from right after the error occurred:

http://www.crshman.com/debug/apport.xserver-xorg-video-intel.4x6KCY.apport_unpack/

Also, if you look at the CurrentDmesg file, around [21.961459] is where I pause
for a second, then start switching the active workspace back and forth.

A few seconds later at [72.034577] is when the first monitor blanks off

What other debug information can I grab to help out with this?

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