[Bug 1234864] Re: upgrade from 13.04 to 13.10 stopped rapidly because a problem occured during the first steps

[Daniel Ricao Canelhas]

*** This bug is a duplicate of bug 1241420 ***
    https://bugs.launchpad.net/bugs/1241420

** This bug has been marked a duplicate of bug 1241420
   Unable to upgrade to 13.10 ( Could not calculate the upgrade)

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https://bugs.launchpad.net/bugs/1234864

Title:
  upgrade from 13.04 to 13.10 stopped rapidly because a problem occured
  during the first steps

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

Bug description:
  I just tried to upgrade from 13.04 to 13.10 with the "update-manager -d" command.
  Tried several times.
  Eventually, I got this message : 

  An unresolvable problem occurred while calculating the upgrade.

   This can be caused by:
   * Upgrading to a pre-release version of Ubuntu
   * Running the current pre-release version of Ubuntu
   * Unofficial software packages not provided by Ubuntu

  Thanks !

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: ubuntu-release-upgrader-core 1:0.192.13
  ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
  Uname: Linux 3.8.0-31-generic i686
  NonfreeKernelModules: nvidia
  ApportVersion: 2.9.2-0ubuntu8.3
  Architecture: i386
  CrashDB: ubuntu
  Date: Thu Oct  3 20:21:08 2013
  InstallationDate: Installed on 2013-09-24 (9 days ago)
  InstallationMedia: Xubuntu 11.04 "Natty Narwhal" - Release i386 (20110426.1)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to raring on 2013-10-03 (0 days ago)
  VarLogDistupgradeTermlog:

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