[Bug 1434098] Re: cannot upgrade to 14.04

[Ubuntu Foundations Team Bug Bot]

*** This bug is a duplicate of bug 1279762 ***
    https://bugs.launchpad.net/bugs/1279762

You seem to have installed the cinnamon package on Ubuntu 13.10.
Unfortunately, that package is not available yet for 14.04. To upgrade
to Ubuntu 14.04 LTS you'll need to either wait for a fix for cinnamon to
be available or uninstall the package and then upgrade.

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inappropriately; please just reply to this message indicating so.]

** Tags added: cinnamon

** This bug has been marked a duplicate of bug 1279762
   upgrade to 14.04 from 13.10 or 12.04 failed - cinnamon fails to upgrade

** Changed in: update-manager (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1434098

Title:
  cannot upgrade to 14.04

Status in update-manager package in Ubuntu:
  Invalid

Bug description:
  I am trying to upgrade from version 12.04 LTS to 14.04.2 LTS. It does
  the Preparing to Upgrade step but it stops at the next one: Setting
  new channel software and it returns the message:

  "Could not calculate the upgrade

  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

  If none of this applies, then please report this bug using the command
  'ubuntu-bug ubuntu-release-upgrader-core' in a terminal."

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.18
  ProcVersionSignature: Ubuntu 3.2.0-77.114-generic 3.2.66
  Uname: Linux 3.2.0-77-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.8
  Architecture: amd64
  Date: Thu Mar 19 14:48:24 2015
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1426772841
   com.ubuntu.update-manager window-height 532
   com.ubuntu.update-manager window-width 600
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: Upgraded to precise on 2015-03-19 (0 days ago)
  VarLogDistupgradeTermlog:

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