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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1303150

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1303150

Title:
  2.13 kernels (ALL) : Multihead multi-gpu broken for at least Nvidia
  GPUs

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  As the summary says. This is 100% repeatable and there's been a fair
  amount of traffic about it on various lists.

  The current concensus is that the root cause is down to to powersave
  mode tweaks in all GPU modules

  To repeat:

  install multiple nvidia GPUs in a desktop system (or a multi-gpu card
  such as nvidia Quadro CVS440)

  Boot up Trusty beta versions (or 2.13 kernel).

  try configuring displays using standard tools based on xrandr

  This worked fine in Saucy (crosscheck: boot off 13.10 64bit DVD)

  Apparently this is fixed in the 2.14 kernels.

  It can be worked around by manually configuring the devices in
  xorg.conf and enabling Xinerama, BUT - this results in massive
  slowdown and as this disables xrandr a number of important apps (such
  as vlc) will refuse to run.

  This is a major regression and needs to be treated as such.

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