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[Peter Schüller <1300914@xxxxxxxxxxxxxxxxxx>]

As  I wrote above: for me logging out of the session and in again
consistently restores it (already when lightdm is restarting it is
"resolved" and both monitors work again).

(This is true unless using kernel 3.13.0-44-generic where the VGA port
never works.)

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https://bugs.launchpad.net/bugs/1300914

Title:
  External screen undetected after first plug

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On Ubuntu 14.04, the external screen plugged on VGA is detected and get activated correctly.
  However, if I unplug it and then replug it later, it is not detected anymore and the screen receives no signal.

  A way to get it back to work is to reboot or simply suspend the
  computer.

  Sorry but I have no idea of what package is handling that.

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