Public bug reported:

I've started observing this bug since i've started using NVidia's
additional drivers (yesterday). Before that I was using nouveau, which
happened to use the builtin Intel GPU and not the NVidia card.

I have an external monitor which I usually connect to the laptop. I have it 
configured so it's the only screen when it's connected. When I unplug it, 
automatically the laptop's builtin screen turns on, and when I plug it, the 
laptop's builtin screen turns off.
This has worked just fine until yesterday. Then I switched to NVidia's 
proprietary drivers.

Now the problem, 100% systematically reproducible, is as follows:

- I disconnect the external screen (and external keyboard and mouse), move my 
laptop and start using it alone. At the beginning everything works fine, then:
- from time to time (every few minutes), the system seems to freeze:
  - mouse cursor doesn't move. Nothing responds to touchpad movements or clicks
  - nothing apparently responds to keystrokes, such as alt+tab to switch 
window, or Ctrl+Alt+T to open a terminal. I'm not sure this ever happened while 
I was typing and had a focused window where to type, so I cannot tell for sure 
it wouldn't respond to typing
- no signs of abnormal CPU consumption, though, nor of disk activity
- hitting ctlr+Alt+F1 does work and immediately brings the virtual console
- hitting ctrl+Alt+F7 brings the graphics screen again and it works, that is, 
it fixes the issue, reesstablishing normal functioning
- unless it happens again.


The first time I observed it (this is the second), this also happened:
- then I plug in the external monitor again. It turns on, shows the screen 
output as expected; the builtin screen turns off, everything looks normal
- except the system is frozen again
- and this time not even Ctrl+Alt+F1 work. Completely frozen. No way out except 
a hard reboot
- unplugging the external monitor doesn't fix the issue, either

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xserver-xorg-core 2:1.15.1-0ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
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_64 Kernel Module  331.38  Wed Jan  8 19:32:30 
PST 2014
 GCC version:  gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
.tmp.unity.support.test.0:
 
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Wed Aug  6 19:51:09 2014
DistUpgraded: 2014-05-24 19:43:23,984 DEBUG enabling apt cron job
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
 bbswitch, 0.7, 3.13.0-32-generic, x86_64: installed
 nvidia-331, 331.38, 3.13.0-32-generic, x86_64: installed
 vboxhost, 4.3.14, 3.13.0-32-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 
09) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:0647]
 NVIDIA Corporation GF117M [GeForce 610M/710M/820M / GT 620M/625M/630M/720M] 
[10de:1140] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] GeForce 710M [1025:0691]
InstallationDate: Installed on 2013-10-11 (299 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: Acer Aspire V3-571G
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic.efi.signed 
root=UUID=5830b30e-69e8-4bb4-8a2b-bc2b43c7414a ro quiet splash vt.handoff=7
SourcePackage: xorg-server
UpgradeStatus: Upgraded to trusty on 2014-05-24 (74 days ago)
dmi.bios.date: 10/15/2012
dmi.bios.vendor: Acer
dmi.bios.version: V2.07
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: VA50_HC_CR
dmi.board.vendor: Acer
dmi.board.version: Type2 - Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V2.07
dmi.modalias: 
dmi:bvnAcer:bvrV2.07:bd10/15/2012:svnAcer:pnAspireV3-571G:pvrV2.07:rvnAcer:rnVA50_HC_CR:rvrType2-BoardVersion:cvnAcer:ct10:cvrV2.07:
dmi.product.name: Aspire V3-571G
dmi.product.version: V2.07
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
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 1:7.3.0-1ubuntu3.1
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: Wed Aug  6 15:19:13 2014
xserver.configfile: /etc/X11/xorg.conf
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.1-0ubuntu2

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


** Tags: amd64 apport-bug compiz-0.9 trusty ubuntu

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1353620

Title:
  Laptop Screen systematically freezes every few minutes when external
  screen disconnected; Ctlr+Alt+F1,Ctrl+Alt+F7 fixes the issue. Then
  system unrecoverably freezes when external screen reconnected (needs
  hard reboot)

Status in “xorg-server” package in Ubuntu:
  New

Bug description:
  I've started observing this bug since i've started using NVidia's
  additional drivers (yesterday). Before that I was using nouveau, which
  happened to use the builtin Intel GPU and not the NVidia card.

  I have an external monitor which I usually connect to the laptop. I have it 
configured so it's the only screen when it's connected. When I unplug it, 
automatically the laptop's builtin screen turns on, and when I plug it, the 
laptop's builtin screen turns off.
  This has worked just fine until yesterday. Then I switched to NVidia's 
proprietary drivers.

  Now the problem, 100% systematically reproducible, is as follows:

  - I disconnect the external screen (and external keyboard and mouse), move my 
laptop and start using it alone. At the beginning everything works fine, then:
  - from time to time (every few minutes), the system seems to freeze:
    - mouse cursor doesn't move. Nothing responds to touchpad movements or 
clicks
    - nothing apparently responds to keystrokes, such as alt+tab to switch 
window, or Ctrl+Alt+T to open a terminal. I'm not sure this ever happened while 
I was typing and had a focused window where to type, so I cannot tell for sure 
it wouldn't respond to typing
  - no signs of abnormal CPU consumption, though, nor of disk activity
  - hitting ctlr+Alt+F1 does work and immediately brings the virtual console
  - hitting ctrl+Alt+F7 brings the graphics screen again and it works, that is, 
it fixes the issue, reesstablishing normal functioning
  - unless it happens again.

  
  The first time I observed it (this is the second), this also happened:
  - then I plug in the external monitor again. It turns on, shows the screen 
output as expected; the builtin screen turns off, everything looks normal
  - except the system is frozen again
  - and this time not even Ctrl+Alt+F1 work. Completely frozen. No way out 
except a hard reboot
  - unplugging the external monitor doesn't fix the issue, either

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xserver-xorg-core 2:1.15.1-0ubuntu2
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic x86_64
  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_64 Kernel Module  331.38  Wed Jan  8 19:32:30 
PST 2014
   GCC version:  gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Wed Aug  6 19:51:09 2014
  DistUpgraded: 2014-05-24 19:43:23,984 DEBUG enabling apt cron job
  DistroCodename: trusty
  DistroVariant: ubuntu
  DkmsStatus:
   bbswitch, 0.7, 3.13.0-32-generic, x86_64: installed
   nvidia-331, 331.38, 3.13.0-32-generic, x86_64: installed
   vboxhost, 4.3.14, 3.13.0-32-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] 
(rev 09) (prog-if 00 [VGA controller])
     Subsystem: Acer Incorporated [ALI] Device [1025:0647]
   NVIDIA Corporation GF117M [GeForce 610M/710M/820M / GT 620M/625M/630M/720M] 
[10de:1140] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: Acer Incorporated [ALI] GeForce 710M [1025:0691]
  InstallationDate: Installed on 2013-10-11 (299 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: Acer Aspire V3-571G
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic.efi.signed 
root=UUID=5830b30e-69e8-4bb4-8a2b-bc2b43c7414a ro quiet splash vt.handoff=7
  SourcePackage: xorg-server
  UpgradeStatus: Upgraded to trusty on 2014-05-24 (74 days ago)
  dmi.bios.date: 10/15/2012
  dmi.bios.vendor: Acer
  dmi.bios.version: V2.07
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: VA50_HC_CR
  dmi.board.vendor: Acer
  dmi.board.version: Type2 - Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V2.07
  dmi.modalias: 
dmi:bvnAcer:bvrV2.07:bd10/15/2012:svnAcer:pnAspireV3-571G:pvrV2.07:rvnAcer:rnVA50_HC_CR:rvrType2-BoardVersion:cvnAcer:ct10:cvrV2.07:
  dmi.product.name: Aspire V3-571G
  dmi.product.version: V2.07
  dmi.sys.vendor: Acer
  version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
  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 1:7.3.0-1ubuntu3.1
  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: Wed Aug  6 15:19:13 2014
  xserver.configfile: /etc/X11/xorg.conf
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.15.1-0ubuntu2

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