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[bugbot <557436@xxxxxxxxxxxxxxxxxx>]

** Description changed:

  Binary package hint: xserver-xorg-video-intel
  
  I have a Dell Latitude E6400 with docking station on a Dell 2408WFP
  monitor. This used to be connected via Display Port "DP1"  in Ubuntu
  Karmic and worked to use the monitor's preferred 1920x1200 16:10 mode.
  
  After upgrade to Lucid, the DP1 connection no longer works. The monitor
  is detected properly, listed in display-settings or xrandr -q, but
  enabling it via display-settings or xrandr --output DP1 --preferred (or
  xrandr --output DP1 --auto) does not wake the monitor from energy save,
  it remains off.
  
  Workaround: connect monitor to DVI port (listed as HDMI2 in xrandr) and
  configure that.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: xserver-xorg-video-intel 2:2.9.1-3ubuntu1
  ProcVersionSignature: Ubuntu 2.6.32-19.28-generic-pae 2.6.32.10+drm33.1
  Uname: Linux 2.6.32-19-generic-pae i686
  Architecture: i386
  Date: Wed Apr  7 18:54:27 2010
  DkmsStatus:
   
  EcryptfsInUse: Yes
  MachineType: Dell Inc. Latitude E6400
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-19-generic-pae root=UUID=1a2166e9-550c-4a0a-8d3d-827d2f623a60 ro quiet nomodeset splash
  ProcEnviron:
   LANGUAGE=en_GB:en
   LANG=de_DE.utf8
   SHELL=/bin/bash
  SourcePackage: xserver-xorg-video-intel
  dmi.bios.date: 12/21/2009
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A20
  dmi.board.name: 0W620R
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA20:bd12/21/2009:svnDellInc.:pnLatitudeE6400:pvr:rvnDellInc.:rn0W620R:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Latitude E6400
  dmi.sys.vendor: Dell Inc.
  glxinfo: Error: [Errno 2] No such file or directory
  system:
   distro:             Ubuntu
   codename:           lucid
   architecture:       i686
   kernel:             2.6.32-19-generic-pae
+ 
+ [lspci]
+ 00:00.0 Host bridge [0600]: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub [8086:2a40] (rev 07)
+     	Subsystem: Dell Device [1028:0233]
+ 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
+     	Subsystem: Dell Device [1028:0233]

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https://bugs.launchpad.net/bugs/557436

Title:
  [GM45] [upgrade] [regression] [lucid]: external monitor only usable
  via DVI, not via DP