** Description changed:

+ WORKAROUND/FIX:
+ unity --reset
+ 
  TEST CASE:
  Edit ~/.gconf/apps/compiz-1/general/screen0/options/%gconf.xml
  and add an entry for a dummy plugin name that does not exist.
  Log out and in again.
  
  ORIGINAL DESCRIPTION:
  With Unity- and Compiz trunks I am seeing some odd flickering and corruption 
on the Unity UI elements. In particular:
  
   - Some reactangles of white tints flickering smoothly up an down on the
  launcher
  
   - The tooltip shadows grow smoothly (maybe taking 1s) to their full
  size
  
   - The panel/menubar drop shadow also seems to gradually repaint, also
  looking sort of animated
  
  Attaching a screencast to illustrate. The screncast didn't very well
  capture how white tints on the launcher, but you can glimpse hints of
  it. Otherwise the tooltip shadows and panel drop shadow animation is
  very clear.
  
  My graphics card is Sandy Bridge.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: unity 5.6.0+bzr2164ubuntu0+670 [origin: LP-PPA-unity-team-staging]
  ProcVersionSignature: Ubuntu 3.2.0-20.32-generic-pae 3.2.12
  Uname: Linux 3.2.0-20-generic-pae i686
  .tmp.unity.support.test.0:
  
  ApportVersion: 1.95-0ubuntu1
  Architecture: i386
  CompizPlugins: 
[core,bailer,detection,composite,opengl,decor,snap,regex,gnomecompat,compiztoolbox,imgpng,vpswitch,move,grid,resize,mousepoll,place,session,animation,workarounds,wall,fade,expo,scale,ezoom,unityshell]
  CompositorRunning: None
  CrashDB: unity
  Date: Fri Mar 23 14:29:57 2012
  DistUpgraded: 2012-01-10 17:56:05,260 DEBUG enabling apt cron job
  DistroCodename: precise
  DistroVariant: ubuntu
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110715)
  MachineType: LENOVO 417882G
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-20-generic-pae 
root=UUID=c06ed9a5-0fdc-4d07-9806-996de732e30d ro quiet splash vt.handoff=7 
i915.i915_enable_rc6=0
  SourcePackage: unity
  UpgradeStatus: Upgraded to precise on 2012-01-10 (72 days ago)
  dmi.bios.date: 03/24/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 83ET52WW (1.22 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 417882G
  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:bvr83ET52WW(1.22):bd03/24/2011:svnLENOVO:pn417882G:pvrThinkPadT420:rvnLENOVO:rn417882G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 417882G
  dmi.product.version: ThinkPad T420
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.7.2-0ubuntu1~ppa5
  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 
1:6.14.99~git20111219.aacbd629-0ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:0.0.16+git20111201+b5534a1-1build2

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https://bugs.launchpad.net/bugs/963093

Title:
  Unity 5.8: Flickering and corruption on Unity UI elements

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