Flickering when moving windows and dark band under top panel

[Dimitris Kogias]

When logging into an "Ubuntu" (compiz/unity) session, I get heavy flickering whenever new windows are created or when windows are moved on screen. I also get a dark band that gradually appears under the top panel and gradually obscures any content under it.

The attached video shows these symptoms.

This is all on a Thinkpad X60.

These symptoms are not present - everything seems to display properly - when logging into a "Ubuntu 2D" (metacity/unity) session.

This problem appeared after an aptitude full-upgrade on 2012-03-23 and has persisted until now. This machine has been running compiz/unity sessions without problems since Natty.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: compiz 1:0.9.7.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-20.32-generic 3.2.12
Uname: Linux 3.2.0-20-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 1.95-0ubuntu1
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,resize,place,vpswitch,grid,regex,move,session,imgpng,snap,mousepoll,gnomecompat,animation,workarounds,wall,expo,ezoom,fade,scale,unityshell]
CompositorRunning: compiz
Date: Mon Mar 26 10:51:20 2012
DistUpgraded: 2012-02-03 19:47:17,311 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
 tp-smapi, 0.41, 3.2.0-18-generic, x86_64: installed
 tp-smapi, 0.41, 3.2.0-19-generic, x86_64: installed
 tp-smapi, 0.41, 3.2.0-20-generic, x86_64: installed
GraphicsCard:
 Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03) (prog-if 00 [VGA controller])
   Subsystem: Lenovo ThinkPad T60/R60 series [17aa:201a]
   Subsystem: Lenovo ThinkPad T60/R60 series [17aa:201a]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110201.2)
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: LENOVO 1709CTO
PackageArchitecture: all
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 TERM=xterm
 SHELL=/bin/bash
 LANG=en_US.UTF-8
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-20-generic root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7
SourcePackage: compiz
UpgradeStatus: Upgraded to precise on 2012-02-04 (51 days ago)
dmi.bios.date: 10/04/2007
dmi.bios.vendor: LENOVO
dmi.bios.version: 7BETD3WW (2.14 )
dmi.board.name: 1709CTO
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:bvr7BETD3WW(2.14):bd10/04/2007:svnLENOVO:pn1709CTO:pvrThinkPadX60:rvnLENOVO:rn1709CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 1709CTO
dmi.product.version: ThinkPad X60
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.7.2-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A

[Launchpad Janitor (janitor)]

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

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 963093, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.