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[Launchpad Bug Tracker <1310621@xxxxxxxxxxxxxxxxxx>]

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

** Changed in: unity (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1310621

Title:
  Black/Blank screen when open/close apps

Status in “unity” package in Ubuntu:
  Confirmed

Bug description:
  I've upgraded to Ubuntu 14.04 and I see a full black screen for a
  second when I open or close an application! I can type while I see
  this Black screen so my pc is not hanged!

  This happens even when I open a new tab in FF or Chrome...

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: unity 7.2.0+14.04.20140416-0ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic i686
  NonfreeKernelModules: nvidia
  .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86 Kernel Module  304.117  Tue Nov 26 21:36:39 PST 2013
   GCC version:  gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: i386
  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
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Mon Apr 21 17:51:48 2014
  DistUpgraded: 2013-05-04 10:21:25,017 DEBUG enabling apt cron job
  DistroCodename: trusty
  DistroVariant: ubuntu
  DkmsStatus:
   bbswitch, 0.7, 3.13.0-24-generic, i686: installed
   nvidia-304-updates, 304.117, 3.13.0-24-generic, i686: installed
  GraphicsCard:
   NVIDIA Corporation G86 [GeForce 8400 GS] [10de:0422] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: Elitegroup Computer Systems Device [1019:1808]
  InstallationDate: Installed on 2011-08-10 (984 days ago)
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  MachineType: ECS P43T-A2
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=050c1275-d8d6-4868-819c-9c86bafc0ed0 ro quiet splash
  SourcePackage: unity
  UpgradeStatus: Upgraded to trusty on 2013-05-04 (352 days ago)
  dmi.bios.date: 06/19/2008
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 080015
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: P43T-A2
  dmi.board.vendor: ECS
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: ECS
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080015:bd06/19/2008:svnECS:pnP43T-A2:pvr1.0:rvnECS:rnP43T-A2:rvr1.0:cvnECS:ct3:cvr1.0:
  dmi.product.name: P43T-A2
  dmi.product.version: 1.0
  dmi.sys.vendor: ECS
  version.compiz: compiz 1:0.9.11+14.04.20140409-0ubuntu1
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu5
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu5
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Sun Apr 20 19:44:26 2014
  xserver.configfile: default
  xserver.devices:
   input        Power Button         KEYBOARD, id 6
   input        Power Button         KEYBOARD, id 7
   input        AT Translated Set 2 keyboard KEYBOARD, id 8
   input        ImPS/2 Generic Wheel Mouse MOUSE, id 9
  xserver.errors:
   open /dev/dri/card0: No such file or directory
   open /dev/fb0: No such file or directory
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   
  xserver.version: 2:1.15.1-0ubuntu2

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