Dead zone on the screen

[Eric Germán Burgueño]

Binary package hint: xorg

After the latest upgrade to Natty, there're many 'dead zones' in the screen, where the server interprets as the mouse being above the desktop instead of the current window. This happens with both Unity and Classic Desktop. Attached is a screencast showing the behavior when using the mouse middle-click (that in my case triggers the Rotate Cube Desktop compiz effect).
Of course, when the mouse is on this wormhole area, it won't interact with the current window's controls or objects, making this one of the most annoying bugs one could encounter.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xorg 1:7.6+4ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
CheckboxSubmission: b8069a2f68be06147bad956e6fb857d7
CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f
CompizPlugins: [core,bailer,detection,composite,opengl,imgjpeg,compiztoolbox,decor,move,imgsvg,text,put,resize,resizeinfo,mousepoll,vpswitch,place,session,regex,gnomecompat,shift,imgpng,obs,wobbly,ezoom,neg,thumbnail,animation,dbus,workarounds,cube,switcher,rotate]
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 1440x900
 edid-base64: AP///////wAwrjNAAAAAAAASAQOAHhN46q4QllhTjCgkUFQAAAABAQEBAQEBAQEBAQEBAQEB2CegiFGEGjAwIDYAML4QAAAZhCGgoFGEGjAwIDYAML4QAAAZAAAADwCQCjKQCigUAQAyDAEBAAAA/gBMUDE0MVdQMS1UTEI4ADw=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Thu May 5 12:45:42 2011
DistUpgraded: Log time: 2011-04-29 06:35:14.669904
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus: vboxhost, 4.0.6, 2.6.38-8-generic, i686: installed
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]
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: LENOVO 6474AV4
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 LANGUAGE=es_AR:en
 LANG=es_AR.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=0e587281-9f07-4794-b8bd-2a142c31d617 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to natty on 2011-04-29 (5 days ago)
dmi.bios.date: 12/06/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 7UET91WW (3.21 )
dmi.board.name: 6474AV4
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:bvr7UET91WW(3.21):bd12/06/2010:svnLENOVO:pn6474AV4:pvrThinkPadT400:rvnLENOVO:rn6474AV4:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 6474AV4
dmi.product.version: ThinkPad T400
dmi.sys.vendor: LENOVO
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

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.