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[Bug 882710] Re: Dual monitors randomly black out, might be linked to switching workspaces

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@Alberto, it's unclear if this is Unity or the video driver but appears
to be -nvidia specific and possibly a regression starting in oneiric.
Would you mind raising this with NVIDIA when you get a chance?

** Changed in: nvidia-graphics-drivers (Ubuntu)
   Importance: Undecided => High

** Changed in: nvidia-graphics-drivers (Ubuntu)
       Status: Confirmed => Triaged

** Changed in: nvidia-graphics-drivers (Ubuntu)
     Assignee: (unassigned) => Alberto Milone (albertomilone)

** Description changed:

  I run Ubuntu 11.10 on a Dell desktop with a dual use video card that
  goes into two monitors. They normally work great and I have no
  complaints. When I first upgraded to 11.10, I would occasionally have
  both monitors randomly black out, and I'd have to restart the computer
  to get them back. Though that problem seemed to go away, and I wrote it
  off to package upgrades that fixed a bug.
  
- Then, after upgraded unity and a bunch of other packages today it started it again. Three times I've had it black out this morning. I don't know why. Though I often use hotkeys to slide between workspaces, and one of the blackouts happened during a slide.
- --- 
+ Then, after upgraded unity and a bunch of other packages today it
+ started it again. Three times I've had it black out this morning. I
+ don't know why. Though I often use hotkeys to slide between workspaces,
+ and one of the blackouts happened during a slide.
+ 
+ [Next Actions]
+ * [tseliot] Raise issue with NVIDIA
+ * Attempt to reproduce the bug outside Unity to see if it can be proved to not be Unity-specific
+ * [Unity Engineering] Evaluate if twinview could be triggering a bug in unity?
+ 
+ ---
  .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  280.13  Wed Jul 27 16:55:43 PDT 2011
-  GCC version:  gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
+  NVRM version: NVIDIA UNIX x86 Kernel Module  280.13  Wed Jul 27 16:55:43 PDT 2011
+  GCC version:  gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
  .tmp.unity.support.test.0:
-  
+ 
  ApportVersion: 1.23-0ubuntu3
  Architecture: i386
  CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,regex,mousepoll,vpswitch,animation,grid,snap,place,resize,session,gnomecompat,move,imgpng,unitymtgrabhandles,wall,fade,workarounds,expo,ezoom,scale,unityshell]
  CompositorRunning: compiz
  DistUpgraded: Log time: 2011-10-13 15:00:25.754620
  DistroCodename: oneiric
  DistroRelease: Ubuntu 11.10
  DistroVariant: ubuntu
  DkmsStatus:
-  nvidia-current, 280.13, 2.6.38-11-generic, i686: installed
-  nvidia-current, 280.13, 3.0.0-12-generic, i686: installed
-  nvidia-current-updates, 280.13, 3.0.0-12-generic, i686: installed
+  nvidia-current, 280.13, 2.6.38-11-generic, i686: installed
+  nvidia-current, 280.13, 3.0.0-12-generic, i686: installed
+  nvidia-current-updates, 280.13, 3.0.0-12-generic, i686: installed
  GraphicsCard:
-  nVidia Corporation GT218 [GeForce 210] [10de:0a65] (rev a2) (prog-if 00 [VGA controller])
-    Subsystem: eVga.com. Corp. Device [3842:1310]
+  nVidia Corporation GT218 [GeForce 210] [10de:0a65] (rev a2) (prog-if 00 [VGA controller])
+    Subsystem: eVga.com. Corp. Device [3842:1310]
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  JockeyStatus:
-  xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
-  xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Enabled, In use)
+  xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
+  xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Enabled, In use)
  MachineType: Dell Inc. OptiPlex 745
  NonfreeKernelModules: nvidia
  Package: unity 4.24.0-0ubuntu2b1
  PackageArchitecture: i386
  ProcEnviron:
-  PATH=(custom, user)
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  PATH=(custom, user)
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=7130e4f2-1020-48a0-807c-882bee26d3c3 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Tags:  oneiric running-unity oneiric running-unity oneiric running-unity ubuntu regression-update compiz-0.9
  Uname: Linux 3.0.0-12-generic i686
  UpgradeStatus: Upgraded to oneiric on 2011-10-14 (13 days ago)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
  XorgLogOld:
-  
+ 
  dmi.bios.date: 08/12/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 2.6.2
  dmi.board.name: 0RF705
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr2.6.2:bd08/12/2008:svnDellInc.:pnOptiPlex745:pvr:rvnDellInc.:rn0RF705:rvr:cvnDellInc.:ct3:cvr:
  dmi.product.name: OptiPlex 745
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu5
  version.libdrm2: libdrm2 2.4.26-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

** Description changed:

  I run Ubuntu 11.10 on a Dell desktop with a dual use video card that
  goes into two monitors. They normally work great and I have no
  complaints. When I first upgraded to 11.10, I would occasionally have
  both monitors randomly black out, and I'd have to restart the computer
  to get them back. Though that problem seemed to go away, and I wrote it
  off to package upgrades that fixed a bug.
  
  Then, after upgraded unity and a bunch of other packages today it
  started it again. Three times I've had it black out this morning. I
  don't know why. Though I often use hotkeys to slide between workspaces,
  and one of the blackouts happened during a slide.
  
  [Next Actions]
  * [tseliot] Raise issue with NVIDIA
+ * [Unity Engineering] Evaluate if twinview could be triggering a bug in unity?
  * Attempt to reproduce the bug outside Unity to see if it can be proved to not be Unity-specific
- * [Unity Engineering] Evaluate if twinview could be triggering a bug in unity?
+ * Identify if there's a way to reproduce the bug deliberately
  
  ---
  .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  280.13  Wed Jul 27 16:55:43 PDT 2011
   GCC version:  gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
  .tmp.unity.support.test.0:
  
  ApportVersion: 1.23-0ubuntu3
  Architecture: i386
  CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,regex,mousepoll,vpswitch,animation,grid,snap,place,resize,session,gnomecompat,move,imgpng,unitymtgrabhandles,wall,fade,workarounds,expo,ezoom,scale,unityshell]
  CompositorRunning: compiz
  DistUpgraded: Log time: 2011-10-13 15:00:25.754620
  DistroCodename: oneiric
  DistroRelease: Ubuntu 11.10
  DistroVariant: ubuntu
  DkmsStatus:
   nvidia-current, 280.13, 2.6.38-11-generic, i686: installed
   nvidia-current, 280.13, 3.0.0-12-generic, i686: installed
   nvidia-current-updates, 280.13, 3.0.0-12-generic, i686: installed
  GraphicsCard:
   nVidia Corporation GT218 [GeForce 210] [10de:0a65] (rev a2) (prog-if 00 [VGA controller])
     Subsystem: eVga.com. Corp. Device [3842:1310]
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  JockeyStatus:
   xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
   xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Enabled, In use)
  MachineType: Dell Inc. OptiPlex 745
  NonfreeKernelModules: nvidia
  Package: unity 4.24.0-0ubuntu2b1
  PackageArchitecture: i386
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=7130e4f2-1020-48a0-807c-882bee26d3c3 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Tags:  oneiric running-unity oneiric running-unity oneiric running-unity ubuntu regression-update compiz-0.9
  Uname: Linux 3.0.0-12-generic i686
  UpgradeStatus: Upgraded to oneiric on 2011-10-14 (13 days ago)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
  XorgLogOld:
  
  dmi.bios.date: 08/12/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 2.6.2
  dmi.board.name: 0RF705
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr2.6.2:bd08/12/2008:svnDellInc.:pnOptiPlex745:pvr:rvnDellInc.:rn0RF705:rvr:cvnDellInc.:ct3:cvr:
  dmi.product.name: OptiPlex 745
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu5
  version.libdrm2: libdrm2 2.4.26-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
  version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
  version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

-- 
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which is subscribed to nvidia-graphics-drivers in Ubuntu.
https://bugs.launchpad.net/bugs/882710

Title:
  Dual monitors randomly black out, might be linked to switching
  workspaces

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