[Bug 1318145] Re: Can't migrate from 13.10 to 14.04 for an unknown reason

[Ubuntu Foundations Team Bug Bot]

*** This bug is a duplicate of bug 1069133 ***
    https://bugs.launchpad.net/bugs/1069133

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** This bug has been marked a duplicate of bug 1069133
   Get upgrade error 12.04 - 12.10 "Could not determine upgrade" - xorg from ppa

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https://bugs.launchpad.net/bugs/1318145

Title:
  Can't migrate from 13.10 to 14.04 for an unknown reason

Status in “ubuntu-release-upgrader” package in Ubuntu:
  Invalid

Bug description:
  Can't migrate from 13.10 to 14.04 for an unknown reason with  "do-
  release-upgrade".

  1) I purged ppa gnome3-team/gnome3-staging and gnome3-team/gnome3-next
  2) I did a dist-upgrade and a reboot.
  3) Nothing wrong with "sudo dpkg --audit"
  4) Here is the output of "do-release-upgrade"  (french) : 

  Calcul des modifications en cours

  Impossible d'évaluer la mise à niveau

  Un problème insoluble est survenu lors de la préparation de la mise à 
  niveau. 

  Ceci peut-être dû à : 
  * la mise à niveau vers une version de développement d'Ubuntu ; 
  * la version de développement d'Ubuntu est actuellement utilisée ; 
  * des paquets logiciels non officiels, non fournis par Ubuntu. 

  Si rien de tout cela ne s'applique, veuillez signaler ce bogue en 
  utilisant la commande 'ubuntu-bug ubuntu-release-upgrader-core' dans 
  un terminal. 

  
  Restauration du système dans son état d'origine

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: ubuntu-release-upgrader-core 1:0.205.7
  ProcVersionSignature: Ubuntu 3.11.0-20.35-generic 3.11.10.6
  Uname: Linux 3.11.0-20-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  CrashDB: ubuntu
  Date: Sat May 10 11:17:58 2014
  InstallationDate: Installed on 2012-09-17 (599 days ago)
  InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20120425-15:28
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to saucy on 2014-05-10 (0 days ago)

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