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[gorgooger <gorgooger@xxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1363675 ***
    https://bugs.launchpad.net/bugs/1363675

The question is what calls update-alternatives to switch back to mesa, this is what brakes everything ...
What I have observed restarting the lightdm switches back to mesa.
That should not happen.

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https://bugs.launchpad.net/bugs/1363408

Title:
  nvidia proprietary drivers are broken

Status in “ubuntu-drivers-common” package in Ubuntu:
  Confirmed

Bug description:
  I upgrade Kubuntu 14.04 to 14.10 and noticed that all desktop effects
  became slow.

  In my dmesg I have these lines

  [   17.039854] init: Failed to spawn nvidia-persistenced main process: unable to execute: No such file or directory
  [   17.040940] init: nvidia-prime main process (2139) terminated with status 1

  
  And it seems that something wrong with path/directories where scripts perform search for nvidia binaries.

  For example, in /etc/init/nvidia-persistenced.conf we can find this:

  exec /usr/bin/nvidia-persistenced --user nvidia-persistenced

  but, I really have not nvidia-persistenced binary in /usr/bin/, it is
  in /usr/lib/nvidia-331/bin/

  
  Also, after installing nvidia-331 I have not nvidia-xconfig command in shell, but I have /usr/lib/nvidia-331/bin/nvidia-xconfig

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: nvidia-331 331.89-0ubuntu2
  ProcVersionSignature: Ubuntu 3.16.0-11.16-generic 3.16.1
  Uname: Linux 3.16.0-11-generic x86_64
  ApportVersion: 2.14.7-0ubuntu1
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Sat Aug 30 15:53:02 2014
  InstallationDate: Installed on 2014-07-05 (55 days ago)
  InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
  SourcePackage: nvidia-graphics-drivers-331
  UpgradeStatus: Upgraded to utopic on 2014-08-30 (0 days ago)

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