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[UlfZibis <1178982@xxxxxxxxxxxxxxxxxx>]

My Computer is:
Lenovo Thinkpad T500 with Intel GMA 4500MHD.
xxx:~$ lspci -nnk | grep "VGA\|'Kern'\|3D\|Display" -A2 
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
	Subsystem: Lenovo Device [17aa:20e4]
	Kernel driver in use: i915
00:02.1 Display controller [0380]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a43] (rev 07)
	Subsystem: Lenovo Device [17aa:20e4]
00:03.0 Communication controller [0780]: Intel Corporation Mobile 4 Series Chipset MEI Controller [8086:2a44] (rev 07)

I see the distortion in Mozilla Thunderbird and also Forefox, see
attached screen shot

The workaround from comment 1 seems to help, but I should test for some
more days.

** Attachment added: "Screen shot from distorted Thunderbird window."
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1178982/+attachment/4427917/+files/Grafik-Fehler.png

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https://bugs.launchpad.net/bugs/1178982

Title:
  My Dell Dimension desktop shows purple/green and distorted Flash video
  unless acceleration method is changed

Status in linux package in Ubuntu:
  Invalid

Bug description:
  1. Lubuntu 13.04  / Linux 3.8.0.-19-generic
  2. I do not know and can not check as the computer in question is no longer in my possession

  Flash does not play movies properly, resulting in a purple/green
  screen that is completely out of proportion.

  Happens mainly on Dell Dimension computers with an Intel chipset:
  http://ubuntuforums.org/showthread.php?t=2132368&p=12641898#post12641898

  One user reported falling back to an older Kernel as a workaround

  "I did find the following workaround. When booting, I choose the
  Advanced Ubuntu options and pick either Linux 3.5.0-27-generic or
  Linux 3.2.0-40-generic. With either, the video/flash is fine. The
  default kernel is Linux 3.8.0-19-generic, and that is the version
  where it does not work"

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