Public bug reported:

On 14.04 I am getting an issue on my Thinkpad T520 where running the
"proprietary,tested" 331.38 driver causes my display to hang. It seems
to stay that way until I switch to tty6 with ctrl+alt+f6 and then back
to tty7 which has the display, this causes it to un-hang. This then
happens back and forth. I am not sure but it might be triggered by
clicking things, opening windows and such. The problem disappears when
switching back to the open source driver.

Should I try an even newer driver from nvidia, or is there any more
information you need for troubleshooting?

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: nvidia-331 331.38-0ubuntu7
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: XFCE
Date: Mon Apr 21 12:29:36 2014
InstallationDate: Installed on 2014-03-18 (33 days ago)
InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140318)
SourcePackage: nvidia-graphics-drivers-331
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.modprobe.d.nvidia.331.hybrid.conf: [deleted]

** Affects: nvidia-graphics-drivers-331 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty

** Description changed:

  On 14.04 I am getting an issue on my Thinkpad T520 where running the
  "proprietary,tested" 331.38 driver causes my display to hang. It seems
  to stay that way until I switch to tty6 with ctrl+alt+f6 and then back
- to tty7 which has the display, this causes it to un-hang. No idea why
- this is happening but the problem disappears when switching back to the
- open source driver.
+ to tty7 which has the display, this causes it to un-hang. This then
+ happens back and forth. I am not sure but it might be triggered by
+ clicking things, opening windows and such. The problem disappears when
+ switching back to the open source driver.
  
  Should I try an even newer driver from nvidia, or is there any more
  information you need for troubleshooting?
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: nvidia-331 331.38-0ubuntu7
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Mon Apr 21 12:29:36 2014
  InstallationDate: Installed on 2014-03-18 (33 days ago)
  InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140318)
  SourcePackage: nvidia-graphics-drivers-331
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.modprobe.d.nvidia.331.hybrid.conf: [deleted]

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You received this bug notification because you are a member of Desktop
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https://bugs.launchpad.net/bugs/1310551

Title:
  NVIDIA proprietary driver 331.38 from package nvidia-331 on Xubuntu
  14.04 causes display to hang

Status in “nvidia-graphics-drivers-331” package in Ubuntu:
  New

Bug description:
  On 14.04 I am getting an issue on my Thinkpad T520 where running the
  "proprietary,tested" 331.38 driver causes my display to hang. It seems
  to stay that way until I switch to tty6 with ctrl+alt+f6 and then back
  to tty7 which has the display, this causes it to un-hang. This then
  happens back and forth. I am not sure but it might be triggered by
  clicking things, opening windows and such. The problem disappears when
  switching back to the open source driver.

  Should I try an even newer driver from nvidia, or is there any more
  information you need for troubleshooting?

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: nvidia-331 331.38-0ubuntu7
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Mon Apr 21 12:29:36 2014
  InstallationDate: Installed on 2014-03-18 (33 days ago)
  InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140318)
  SourcePackage: nvidia-graphics-drivers-331
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.modprobe.d.nvidia.331.hybrid.conf: [deleted]

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