Public bug reported:

This problem appeared after upgrading to Ubuntu 12.10.
Steps to reproduce:
 - Open a video in Totem or in VLC
 - Activate the dash
The part of the dash which overlaps the video is flickering (repeatedly 
becoming fully transparent for a fraction of a second). It doesn't matter 
whether the video is playing or paused. The problem remains even when the video 
window is hidden behind other windows.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: unity 6.8.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
CompizPlugins: 
[core,composite,opengl,compiztoolbox,decor,mousepoll,place,imgpng,snap,unitymtgrabhandles,resize,grid,gnomecompat,move,session,regex,vpswitch,wall,animation,workarounds,expo,ezoom,staticswitcher,fade,scale,unityshell,scaleaddon]
CompositorRunning: compiz
Date: Fri Oct 26 19:16:55 2012
DistUpgraded: 2012-10-20 21:23:24,967 DEBUG enabling apt cron job
DistroCodename: quantal
DistroVariant: ubuntu
DkmsStatus: virtualbox, 4.1.18, 3.5.0-17-generic, x86_64: installed
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI Redwood PRO [Radeon HD 5500 Series] 
[1002:68d9] (prog-if 00 [VGA controller])
   Subsystem: PC Partner Limited Device [174b:e142]
InstallationDate: Installed on 2011-03-31 (574 days ago)
InstallationMedia: Xubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110330)
MachineType: Gigabyte Technology Co., Ltd. H67MA-UD2H-B3
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic 
root=UUID=6bdbb039-9684-4849-bed6-7cecf8d93913 ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: Upgraded to quantal on 2012-10-20 (5 days ago)
dmi.bios.date: 02/22/2011
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F2
dmi.board.name: H67MA-UD2H-B3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: 
dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd02/22/2011:svnGigabyteTechnologyCo.,Ltd.:pnH67MA-UD2H-B3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnH67MA-UD2H-B3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: H67MA-UD2H-B3
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.8.4-0ubuntu3
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 
1:6.99.99~git20120913.8637f772-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3

** Affects: unity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug compiz-0.9 quantal running-unity ubuntu

** Attachment added: "Screenshot from 2012-10-26 18:41:19-crop.png"
   
https://bugs.launchpad.net/bugs/1071830/+attachment/3414605/+files/Screenshot%20from%202012-10-26%2018%3A41%3A19-crop.png

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https://bugs.launchpad.net/bugs/1071830

Title:
  Dash is flickering when a video playback window is underneath it

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