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[WinEunuchs2Unix <RickLee518@xxxxxxxxx>]

I have similar problems using xrandr on a laptop with a dual display LCD
32" TV under Ubuntu 14.04 with Kernel's 3.13.24, 3.13.29, 3.15.1,
3.15.2, 3.15.3, 3.15.4 and 3.15.5.  A new Kernel seems to come out each
week addressing various problems so I have held off reporting the
glitches.

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

Title:
  Displaylink slow graphic performance on Ubuntu 13

Status in “xorg-server” package in Ubuntu:
  Expired

Bug description:
  Hello,

  When I connect the diaplay link (DVI) and I activate the screen in
  xRandr, the graphic performance slow down, the mouse movement are
  jerky and the mouse cursor blink on all screen, when I move a window,
  is also not fluid.

  When I desactivate the screen in xRandr, but I keep the displaylink
  connected, everything work fine.

  I also tried to take all graphic effect and desktop in compiz setup,
  stay the same.

  I'm running Ubuntu 13.04 64 bits and the Kernel
  3.11.0-031100rc5-generic I tried also with Kernel 3.10 and 3.9.

  My Graphic card is a Intel.

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