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[Kamil <kamil.jezek@xxxxxxxxx>]

I am on ubuntu 14.04. fix pack 1 = linux kernel 3.16.0-33.  HP Elitebook
840

There is no more *ERROR* too many retries, in the log, but the behaviour
is still the same as people describe above.

When VGA is connected to the docking station, reboot fixes the problem
When VGA is connected directly to the laptop and the laptop is undocked, the problem may be fixed just by sleep/resume, no reboot needed.

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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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