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

[Tomáš Bendásek]

Thanks a lot, downgrading of the mentionned packages made the upgrade of
the system possible.

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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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