the graphical display window is incomplete and bug

[loicjacquardtest]

The display windows is bad. Compiz and unity displayed wrong. Minimized windows appear blurred, and background on the desktop. The bug appeared after the last update of unity 4.2.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: unity 4.20.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-10.16-generic 3.0.4
Uname: Linux 3.0.0-10-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 1.23-0ubuntu2
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
Date: Thu Sep 29 23:12:12 2011
DistUpgraded: Log time: 2011-09-01 18:45:07.335666
DistroCodename: oneiric
DistroVariant: ubuntu
DkmsStatus:
 vboxhost, 4.1.2, 3.0.0-10-generic, x86_64: installed
 vboxhost, 4.1.2, 3.0.0-9-generic, x86_64: installed
GraphicsCard:
 ATI Technologies Inc M92 LP [Mobility Radeon HD 4300 Series] [1002:9552] (prog-if 00 [VGA controller])
   Subsystem: Samsung Electronics Co Ltd Device [144d:c050]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
MachineType: SAMSUNG ELECTRONICS CO., LTD. R520/R522/R620
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-10-generic root=UUID=10b0a7e2-8a15-40f1-ae52-28e59dd51eb7 ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: Upgraded to oneiric on 2011-09-07 (21 days ago)
dmi.bios.date: 09/16/2009
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 05LL.M025.20090916.Jay
dmi.board.name: R520/R522/R620
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr05LL.M025.20090916.Jay:bd09/16/2009:svnSAMSUNGELECTRONICSCO.,LTD.:pnR520/R522/R620:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR520/R522/R620:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A:
dmi.product.name: R520/R522/R620
dmi.product.version: Not Applicable
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu24
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

[loicjacquardtest (loicjacquardtest)]

The bug appears to minimized windows or closed.

[Launchpad Janitor (janitor)]

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