[Bug 1310983] Re: Ubuntu upgrade from 13.10 to 14.04 fails - unable to calculate upgrade

[Jean-Baptiste Lallement]

Thanks for your report.

The version of libnih on your system are not from an official Ubuntu repository:
libnih-dbus1 1.0.3-4.2+0~20130911110959.svn2.1 0
libnih1 1.0.3-4.2+0~20130911110959.svn2.1 0

and are preventing the upgrade of several core packages (unity, upstart,
systemd)

Please revert them to the version available in Saucy and try the upgrade
again. Be aware that these libraries are essential to your system and
updating them to unsupported version can make it unbootable.

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1310983

Title:
  Ubuntu upgrade from 13.10 to 14.04 fails - unable to calculate upgrade

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

Bug description:
  while running dist upgrade, it stops at step two with a error 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"

  I've tried updating all the currently installed software, disabling
  all the extra PPAs, but I am still getting this error.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: ubuntu-release-upgrader-core 1:0.205.5
  ProcVersionSignature: Ubuntu 3.11.0-19.33-generic 3.11.10.5
  Uname: Linux 3.11.0-19-generic i686
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: i386
  CrashDB: ubuntu
  Date: Tue Apr 22 10:38:56 2014
  InstallationDate: Installed on 2012-05-11 (710 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to saucy on 2014-04-22 (0 days ago)
  VarLogDistupgradeTermlog:

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