[Bug 1714635] Re: not able to upgrade to ubuntu 14

[Brian Murray]

*** This bug is a duplicate of bug 1611737 ***
    https://bugs.launchpad.net/bugs/1611737

** This bug has been marked a duplicate of bug 1611737
   Can't upgrade from 14.04 to 16.04 if ros-indigo-desktop-full or ros-indigo-perception installed from ROS servers

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https://bugs.launchpad.net/bugs/1714635

Title:
  not able to upgrade to ubuntu 14

Status in update-manager package in Ubuntu:
  New

Bug description:
  Setting new software channels:
  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

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.22
  ProcVersionSignature: Ubuntu 3.2.0-126.169-generic-pae 3.2.79
  Uname: Linux 3.2.0-126-generic-pae i686
  ApportVersion: 2.0.1-0ubuntu17.15
  Architecture: i386
  Date: Sat Sep  2 08:44:20 2017
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: Upgraded to precise on 2017-09-02 (0 days ago)
  VarLogDistupgradeTermlog:

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