[Bug 1718322] Re: cant upgrade from 12.04 to 14 or higher

[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/1718322

Title:
  cant upgrade from 12.04 to 14 or higher

Status in update-manager package in Ubuntu:
  New

Bug description:
  Calculating the changes

  Calculating the changes

  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. 

  
  Restoring original system state

  currently in 12.04, want to upgrade to 16

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.22
  ProcVersionSignature: Ubuntu 3.13.0-117.164~precise1-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-117-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.0.1-0ubuntu17.15
  Architecture: amd64
  Date: Tue Sep 19 20:53:17 2017
  InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64 (20140807.1)
  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 2017-09-20 (0 days ago)

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