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[Bug 1273137] [NEW] Purple screen without unity

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Public bug reported:

Hi, I use Ubuntu 12.04 64bit and sometimes, when I click to another workspace, my screen turns purple with "Ubuntu" and dots = ubuntu plymouth screen and with cursor. I can change windows using alt+tab and then I can see everything including unity, but when I release those keys, there is purple screen again.
Sometimes screen is not purple, but black, but the behaviour is the same. It happens for about 5mins and then revert to normal state.
It is computer in a company so it is annoying.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.20.0-0ubuntu3
ProcVersionSignature: Ubuntu 3.11.0-15.23~precise1-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
Date: Mon Jan 27 10:06:53 2014
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller [8086:0152] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:365e]
InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1)
MachineType: LENOVO 10104
MarkForUpload: True
ProcEnviron:
 PATH=(custom, no user)
 LANG=cs_CZ.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic root=UUID=e471b1d6-52c7-4887-b510-9c8b38cac8c7 ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/21/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: ELKT31AUS
dmi.board.name: MAHOBAY
dmi.board.vendor: LENOVO
dmi.board.version: 31900003 STD
dmi.chassis.type: 13
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnLENOVO:bvrELKT31AUS:bd03/21/2013:svnLENOVO:pn10104:pvrLenovoC440:rvnLENOVO:rnMAHOBAY:rvr31900003STD:cvnToBeFilledByO.E.M.:ct13:cvrToBeFilledByO.E.M.:
dmi.product.name: 10104
dmi.product.version: Lenovo C440
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.7.12-0ubuntu3
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.46-1ubuntu0.0.0.1
version.libgl1-mesa-dri: libgl1-mesa-dri N/A
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core N/A
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A

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


** Tags: amd64 apport-bug compiz-0.9 patch precise running-unity third-party-packages ubuntu

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https://bugs.launchpad.net/bugs/1273137

Title:
  Purple screen without unity

Status in “unity” package in Ubuntu:
  New

Bug description:
  Hi, I use Ubuntu 12.04 64bit and sometimes, when I click to another workspace, my screen turns purple with "Ubuntu" and dots = ubuntu plymouth screen and with cursor. I can change windows using alt+tab and then I can see everything including unity, but when I release those keys, there is purple screen again.
  Sometimes screen is not purple, but black, but the behaviour is the same. It happens for about 5mins and then revert to normal state.
  It is computer in a company so it is annoying.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: unity 5.20.0-0ubuntu3
  ProcVersionSignature: Ubuntu 3.11.0-15.23~precise1-generic 3.11.10
  Uname: Linux 3.11.0-15-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.0.1-0ubuntu17.6
  Architecture: amd64
  CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
  CompositorRunning: compiz
  Date: Mon Jan 27 10:06:53 2014
  DistUpgraded: Fresh install
  DistroCodename: precise
  DistroVariant: ubuntu
  GraphicsCard:
   Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller [8086:0152] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:365e]
  InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1)
  MachineType: LENOVO 10104
  MarkForUpload: True
  ProcEnviron:
   PATH=(custom, no user)
   LANG=cs_CZ.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic root=UUID=e471b1d6-52c7-4887-b510-9c8b38cac8c7 ro quiet splash vt.handoff=7
  SourcePackage: unity
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/21/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: ELKT31AUS
  dmi.board.name: MAHOBAY
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900003 STD
  dmi.chassis.type: 13
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnLENOVO:bvrELKT31AUS:bd03/21/2013:svnLENOVO:pn10104:pvrLenovoC440:rvnLENOVO:rnMAHOBAY:rvr31900003STD:cvnToBeFilledByO.E.M.:ct13:cvrToBeFilledByO.E.M.:
  dmi.product.name: 10104
  dmi.product.version: Lenovo C440
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.7.12-0ubuntu3
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.46-1ubuntu0.0.0.1
  version.libgl1-mesa-dri: libgl1-mesa-dri N/A
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx N/A
  version.xserver-xorg-core: xserver-xorg-core N/A
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
  version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A

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