Public bug reported:

1. Start up into Ubuntu.
2. Log in to a normal account.
3. From the system menu, choose "Guest Session".

What happens:
1. Ubuntu starts up correctly.
2. The login screen and Ubuntu session work fine.
3. The screen goes black for about 30 seconds.
4. The screen flickers wildly, alternating between colored static and a freeze 
frame of the Ubuntu session with the system menu open.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-2.6-generic 3.8.0-rc4
Uname: Linux 3.8.0-2-generic i686
.tmp.unity.support.test.0:

ApportVersion: 2.8-0ubuntu2
Architecture: i386
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
Date: Tue Jan 29 15:10:03 2013
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI Juniper [Radeon HD 5700 Series] 
[1002:68b8] (prog-if 00 [VGA controller])
   Subsystem: XFX Pine Group Inc. Device [1682:2994]
 Advanced Micro Devices [AMD] nee ATI Juniper [Radeon HD 5700 Series] 
[1002:68b8] (prog-if 00 [VGA controller])
   Subsystem: XFX Pine Group Inc. Device [1682:2994]
InstallationDate: Installed on 2013-01-23 (6 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha i386 (20130122)
MachineType: Gigabyte Technology Co., Ltd. Z68A-D3-B3
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-2-generic 
root=UUID=ec507464-1d45-4594-891c-521fe01cb87f ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/21/2011
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F6
dmi.board.name: Z68A-D3-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.:bvrF6:bd07/21/2011:svnGigabyteTechnologyCo.,Ltd.:pnZ68A-D3-B3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnZ68A-D3-B3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: Z68A-D3-B3
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.9~daily13.01.25-0ubuntu1
version.libdrm2: libdrm2 2.4.41-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.1.901-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.0.0-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.19-0ubuntu3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.6-0ubuntu1
xserver.bootTime: Tue Jan 29 15:09:05 2013
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.1.901-0ubuntu2
xserver.video_driver: radeon

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


** Tags: apport-bug compiz-0.9 i386 raring running-unity ubuntu

** Attachment added: "video of the problem"
   
https://bugs.launchpad.net/bugs/1108967/+attachment/3505829/+files/Video%2029-01-2013%2014%2051%2001.mov

** Description changed:

  1. Start up into Ubuntu.
  2. Log in to a normal account.
  3. From the system menu, choose "Guest Session".
  
  What happens:
  1. Ubuntu starts up correctly.
  2. The login screen and Ubuntu session work fine.
- 3. The screen flickers wildly, alternating between colored static and 
theUbuntu session with the system menu open.
+ 3. The screen goes black for about 30 seconds.
+ 4. The screen flickers wildly, alternating between colored static and a 
freeze frame of the Ubuntu session with the system menu open.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: xorg 1:7.7+1ubuntu4
  ProcVersionSignature: Ubuntu 3.8.0-2.6-generic 3.8.0-rc4
  Uname: Linux 3.8.0-2-generic i686
  .tmp.unity.support.test.0:
-  
+ 
  ApportVersion: 2.8-0ubuntu2
  Architecture: i386
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  Date: Tue Jan 29 15:10:03 2013
  DistUpgraded: Fresh install
  DistroCodename: raring
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
-  Advanced Micro Devices [AMD] nee ATI Juniper [Radeon HD 5700 Series] 
[1002:68b8] (prog-if 00 [VGA controller])
-    Subsystem: XFX Pine Group Inc. Device [1682:2994]
-  Advanced Micro Devices [AMD] nee ATI Juniper [Radeon HD 5700 Series] 
[1002:68b8] (prog-if 00 [VGA controller])
-    Subsystem: XFX Pine Group Inc. Device [1682:2994]
+  Advanced Micro Devices [AMD] nee ATI Juniper [Radeon HD 5700 Series] 
[1002:68b8] (prog-if 00 [VGA controller])
+    Subsystem: XFX Pine Group Inc. Device [1682:2994]
+  Advanced Micro Devices [AMD] nee ATI Juniper [Radeon HD 5700 Series] 
[1002:68b8] (prog-if 00 [VGA controller])
+    Subsystem: XFX Pine Group Inc. Device [1682:2994]
  InstallationDate: Installed on 2013-01-23 (6 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha i386 (20130122)
  MachineType: Gigabyte Technology Co., Ltd. Z68A-D3-B3
  MarkForUpload: True
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-2-generic 
root=UUID=ec507464-1d45-4594-891c-521fe01cb87f ro quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/21/2011
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F6
  dmi.board.name: Z68A-D3-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.:bvrF6:bd07/21/2011:svnGigabyteTechnologyCo.,Ltd.:pnZ68A-D3-B3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnZ68A-D3-B3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: Z68A-D3-B3
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.
  version.compiz: compiz 1:0.9.9~daily13.01.25-0ubuntu1
  version.libdrm2: libdrm2 2.4.41-0ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.2-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.13.1.901-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.0.0-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.19-0ubuntu3
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:1.0.6-0ubuntu1
  xserver.bootTime: Tue Jan 29 15:09:05 2013
  xserver.configfile: default
  xserver.errors:
-  
+ 
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.13.1.901-0ubuntu2
  xserver.video_driver: radeon

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1108967

Title:
  Choosing "Guest Session" makes screen flicker indefinitely

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https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1108967/+subscriptions

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