The debdiff as actually uploaded; just has some changelog cleanups.

** Description changed:

  Binary package hint: xserver-xorg-video-intel
  
  laptop model:  Dell Latitude D400
  adding "ForceEnablePipeA" solved the problem
  problem related to bug# 138256:
  https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/138256
  
  output of `lspci -vvnn | grep -A1 "VGA compat"`:
  
  00:02.0 VGA compatible controller [0300]: Intel Corporation 82852/855GM 
Integrated Graphics Device [8086:3582] (rev 02) (prog-if 00 [VGA controller])
        Subsystem: Dell Latitude D400 [1028:0139]
+ 
+ [SRU]
+ Impact:  Affects users of Dell D400 systems, causing crashes when vt 
switching.  This is a well known bug that is fixed on a per-pciid basis using 
quirks, and are very safe for backport candidates.
+ 
+ Addressed:  A quirk was prepared and sent upstream for review.  It was
+ accepted with one correction and deployed in the -intel 2.3.0 release;
+ current git tree shows the quirk still present.
+ 
+ Patch:  Attached below.
+ 
+ Test Case:  On a Dell Latitude D400, attempt to do vt switches, and this
+ should produce an Xserver crash.
+ 
+ Regression Potential:  None.  Quirks have been proven to be very safe in
+ backports, and since they only target a very specific chip even if they
+ are incorrect (which has only happened once so far), they only affect
+ users of that exact chip.

** Attachment added: "xserver-xorg-video-intel_2.2.1-1ubuntu13.1.debdiff"
   
http://launchpadlibrarian.net/14777732/xserver-xorg-video-intel_2.2.1-1ubuntu13.1.debdiff

-- 
Need a Pipe-A quirk for 1028:0139
https://bugs.launchpad.net/bugs/228519
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