Closing laptop lid while playing video crashes GUI

Binary package hint: unity

When video is playing, and the laptop lid is closed, the graphical interface stops responding normally. The only way to restore functionality is to switch to a TTY, kill, and restart Xorg. This happens no matter how video is played, whether through Totem, VLC, or a flash player in either Chrome of Friefox. Per power settings, the computer does not enter a suspend or hibernate mode, when the lid is closed, but the screen is blanked.

After the lid is opened, the mouse continue to respond normally, but it is impossible to interact with any interface elements. Any normal visual-interface key-combinations like alt+tab do not have any effect. Ctrl+alt+F1 produces a TTY as expected. Killing Xorg is effective, and X re-launches itself automatically. This issue started immediately after the upgrade to 11.04, and is consistent and reproducible.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: unity 3.8.12-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-9.43-generic 2.6.38.4
Uname: Linux 2.6.38-9-generic i686
Architecture: i386
CompizPlugins: Failed to get value for `/apps/compiz-1/general/screen0/options/active_plugins': Failed to contact configuration server; the most common cause is a missing or misconfigured D-Bus session bus daemon. See http://projects.gnome.org/gconf/ for information. (Details - 1: Failed to get connection to session: Error connecting: Connection refused)
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: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1440x900
 edid-base64: AP///////wAwrhRAAAAAABwTAQOAGhB46uWVk1ZPkCgoUFQAAAABAQEBAQEBAQEBAQEBAQEB8BygoFCEGjAYEDYABaMQAAAY8BygoFCEGjAYEDYABaMQAAAYAAAADwCVCjKVCjIZAQAwZABVAAAA/gBMVEQxMjFFUTNCCiAgAKA=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Mon May 16 20:41:28 2011
DistUpgraded: Log time: 2011-04-29 00:46:04.968438
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus:
 vboxhost, 4.0.6, 2.6.38-9-generic, i686: installed
 vboxhost, 4.0.6, 2.6.35-29-generic, i686: installed
GconfCompiz: Failure listing entries in `/apps/compiz-1': Failed to contact configuration server; the most common cause is a missing or misconfigured D-Bus session bus daemon. See http://projects.gnome.org/gconf/ for information. (Details - 1: Failed to get connection to session: Error connecting: Connection refused)
GraphicsCard:
 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:20e4]
   Subsystem: Lenovo Device [17aa:20e4]
MachineType: LENOVO 7465CTO
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-9-generic root=/dev/mapper/hostname--system-root ro quiet splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-9.43-generic 2.6.38.4
ProcVersionSignature__: Ubuntu 2.6.38-9.43-generic 2.6.38.4
Renderer: Unknown
SourcePackage: unity
UpgradeStatus: Upgraded to natty on 2011-04-29 (17 days ago)
dmi.bios.date: 11/10/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 6DET61WW (3.11 )
dmi.board.name: 7465CTO
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:bvr6DET61WW(3.11):bd11/10/2009:svnLENOVO:pn7465CTO:pvrThinkPadX200s:rvnLENOVO:rn7465CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 7465CTO
dmi.product.version: ThinkPad X200s
dmi.sys.vendor: LENOVO
peripherals: Failure listing entries in `/desktop/gnome/peripherals': Failed to contact configuration server; the most common cause is a missing or misconfigured D-Bus session bus daemon. See http://projects.gnome.org/gconf/ for information. (Details - 1: Failed to get connection to session: Error connecting: Connection refused)
version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7