Comment 0 for bug 745112

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