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[Andrea Azzarone <azzaronea@xxxxxxxxx>]

Can you still reproduce this?

** Changed in: unity
       Status: New => Incomplete

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

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https://bugs.launchpad.net/bugs/1189434

Title:
  ultra-slow with second monitor

Status in Unity:
  Incomplete
Status in unity package in Ubuntu:
  Incomplete

Bug description:
  This only happens to me occasionally, but when it does, it's
  reproducible.

  Without the second monitor plugged in, all is fine - this behaviour only
  exhibits itself when I plug it in, and all reverts to normal when I unplug it.

  When I plug in the second monitor (a 25" HP monitor in 1920x1200
  portrait mode), everything becomes unusably slow, weird flashing
  effects in the display bar at the top of the screen, graphics
  glitches all over the place, very slow response to typed characters.

  I shot a short video to demonstrate the effect:

  http://www.youtube.com/watch?v=93uHpjWI6X8

  I've been using the same setup since Natty without seeing similar
  problems.

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