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[Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>]

The issue here is that compiz prefers pageflips (quite rightly for igfx)
which for udl means that we need to push the entire display over the
slow usb link (and requiring a slow readback) on each update (instead of
just the damaged region) -- a write magnification issue.

** Package changed: xrandr (Ubuntu) => xorg-server (Ubuntu)

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https://bugs.launchpad.net/bugs/1213338

Title:
  Displaylink slow graphic performance on Ubuntu 13

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