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[bugbot <745112@xxxxxxxxxxxxxxxxxx>]

** Description changed:

  Binary package hint: unity
  
  (I'm not sure where in the stack this problem really is, so I'm guessing
  and picking on unity)
  
  I have a Lenovo T410s laptop with Intel graphics and I use it with a
  dock with two 1920x1200 monitors connected.  I'm running up-to-date
  Natty.  If I boot the laptop with it already docked, everything works
  perfectly: the two external monitors are used and I get a nice unity
  desktop spanning my 3840x1200 space.
  
  However, if I boot with the laptop undocked, log in, and then dock the
  laptop, it breaks pretty badly.  Only one monitor is lit up, and I just
  get a black screen with a mouse pointer there -- no desktop background,
  windows, toolbars, or anything.  Once it's in this state, it doesn't
  seem possible to recover -- if I undock the laptop again, the internal
  screen just stays black with a pointer.
  
  When the laptop is in a working state, undocking it sort of works... the
  desktop switches to the laptop screen, but then redocking it acts just
  like docking as described above.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: unity 3.6.8-0ubuntu3
  ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
  Uname: Linux 2.6.38-7-generic x86_64
  Architecture: amd64
  CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,scale,session,unityshell]
  CompositorRunning: compiz
  DRM.card0.DP.1:
   status: disconnected
   enabled: disabled
   dpms: Off
   modes: 
   edid-base64:
  DRM.card0.DP.2:
   status: disconnected
   enabled: disabled
   dpms: Off
   modes: 
   edid-base64:
  DRM.card0.DP.3:
   status: disconnected
   enabled: disabled
   dpms: Off
   modes: 
   edid-base64:
  DRM.card0.HDMI.A.1:
   status: disconnected
   enabled: disabled
   dpms: Off
   modes: 
   edid-base64:
  DRM.card0.HDMI.A.2:
   status: connected
   enabled: enabled
   dpms: On
   modes: 1920x1200 1920x1080 1920x1080 1600x1200 1680x1050 1400x1050 1280x1024 1280x1024 1440x900 1360x768 1152x864 1280x720 1280x720 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 800x600 720x576 720x480 640x480 640x480 640x480 640x480 720x400
   edid-base64: AP///////wA4o1BnAQEBASUUAQOAOCN46pe1qVQ4riUTUFS/74CBwIGAkECLwJUAqUCzANEAKDyAoHCwI0AwIDYAMF4hAAAaAAAA/QAyTBpSEQAKICAgICAgAAAA/ABFQTI2MVdNCiAgICAgAAAA/wAwOTEwNjY4OE5BCiAgAV4CAQQAAR0AclHQHiBuKFUAMF4hAAAeAR0AvFLQHiC4KFVAMF4hAAAejgrQiiDgLRAQPpYAMF4hAAAYjArQkCBAMSAMQFUAMF4hAAAYAjqAGHE4LUBYLEUAMF4hAAAeAjqA0HI4LUAQLEWAMF4hAAAeAAAAAAAAAAAAAAAAAAAA/A==
  DRM.card0.HDMI.A.3:
   status: connected
   enabled: enabled
   dpms: On
   modes: 1920x1200 1920x1080 1920x1080 1600x1200 1680x1050 1400x1050 1280x1024 1280x1024 1440x900 1360x768 1152x864 1280x720 1280x720 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 800x600 720x576 720x480 640x480 640x480 640x480 640x480 720x400
   edid-base64: AP///////wA4o1BnAQEBASUUAQOAOCN46pe1qVQ4riUTUFS/74CBwIGAkECLwJUAqUCzANEAKDyAoHCwI0AwIDYAMF4hAAAaAAAA/QAyTBpSEQAKICAgICAgAAAA/ABFQTI2MVdNCiAgICAgAAAA/wAwOTEwNjY5ME5BCiAgAWUCAQQAAR0AclHQHiBuKFUAMF4hAAAeAR0AvFLQHiC4KFVAMF4hAAAejgrQiiDgLRAQPpYAMF4hAAAYjArQkCBAMSAMQFUAMF4hAAAYAjqAGHE4LUBYLEUAMF4hAAAeAjqA0HI4LUAQLEWAMF4hAAAeAAAAAAAAAAAAAAAAAAAA/A==
  DRM.card0.LVDS.1:
   status: connected
   enabled: enabled
   dpms: Off
   modes: 1440x900 1440x900
   edid-base64: AP///////wAwrjZAAAAAAAASAQOAHhN46uWVk1ZPkCgoUFQAAAABAQEBAQEBAQEBAQEBAQEBwSmg5FGEGjAwIDYAL74QAAAZ3iKgLFGEfjAwIDYAL74QAAAZAAAADwCVCjKVCigeCQBMo0JUAAAA/gBMVE4xNDFCVDA4MDAxAMs=
  DRM.card0.VGA.1:
   status: disconnected
   enabled: disabled
   dpms: Off
   modes: 
   edid-base64:
  Date: Tue Mar 29 10:07:56 2011
  DistUpgraded: Log time: 2010-12-12 14:04:29.713775
  DistroCodename: natty
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  GraphicsCard:
   Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21c1]
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20101206)
  InstallationMedia_: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20101206)
  InstallationMedia__: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20101206)
  MachineType: LENOVO 2901CTO
  ProcEnviron:
   LANGUAGE=en_US:en
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=ab1e5491-e40c-4113-bf20-22ecb604999a ro quiet splash vt.handoff=7
  ProcVersionSignature_: Ubuntu 2.6.38-7.39-generic 2.6.38
  ProcVersionSignature__: Ubuntu 2.6.38-7.39-generic 2.6.38
  Renderer: Unknown
  SourcePackage: unity
  UpgradeStatus: Upgraded to natty on 2011-03-24 (4 days ago)
  dmi.bios.date: 10/27/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6UET61WW (1.41 )
  dmi.board.name: 2901CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr6UET61WW(1.41):bd10/27/2010:svnLENOVO:pn2901CTO:pvrThinkPadT410s:rvnLENOVO:rn2901CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2901CTO
  dmi.product.version: ThinkPad T410s
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.4git20110322-0ubuntu5
  version.libdrm2: libdrm2 2.4.23-1ubuntu5
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
  version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu11
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu6
+ 
+ [lspci]
+ Nux: lspci: 00:02.0 VGA compatible controller [0300]: Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02)

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https://bugs.launchpad.net/bugs/745112

Title:
  [arrandale] desktop is messed up (goes black) when laptop is docked
  with two external 1920x1200 monitors (x86_64)