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[Rolf Leggewie <1190546@xxxxxxxxxxxxxxxxxx>]

raring has seen the end of its life and is no longer receiving any
updates. Marking the raring task for this ticket as "Won't Fix".

** Changed in: xorg-server (Ubuntu Raring)
       Status: Fix Committed => Won't Fix

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https://bugs.launchpad.net/bugs/1190546

Title:
  using nvidia driver causes intel to be detected twice

Status in xorg-server package in Ubuntu:
  Fix Released
Status in xorg-server source package in Raring:
  Won't Fix

Bug description:
  [Impact] 
   * When using nvidia drivers and the nvidia graphics card is boot vga the intel card will be added twice, causing xserver to fail to start up correctly.
   * Proper optimus usecase requires this.

  [Test Case]
   * Either:
    - Have an affected laptop with nvidia drivers
    - hack xserver-xorg-video-nouveau NVPlatformProbe to always return false immediately, and use vgaswitcheroo to force nouveau as primary:
       # stop lightdm
       # echo DIS > /sys/kernel/debug/vgaswitcheroo/switch
       # echo ON > /sys/kernel/debug/vgaswitcheroo/switch
   * Start xserver with "Xorg" and no configuration file.
   * Good behavior: starts normally, with the nvidia card driving all displays
   * Bad behavior: "Fatal server error: AddScreen/ScreenInit failed for gpu driver 1 -1"

  [Regression Potential] 
   * Unlikely to regress, the fix affects code paths that previously were broken, and could have caused devices to be added multiple times, resulting in the fatal server error seen here. Extra checks are added to make sure platform <-> pci device confusion won't happen.
   * GPU detection may be affected in some way, testing will have to be done to make sure the normal cases are unaffected.

  [Other Info]
  Proposed upstream. http://lists.x.org/archives/xorg-devel/2013-June/036555.html

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