[Bug 1647201] Re: dist upgrade 14.04 LTS to 16.04 LTS

[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/1647201

Title:
  dist upgrade 14.04 LTS to 16.04 LTS

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  using sudo  do-release-upgrade

  i got the following error

  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 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.13.0-103.150-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-103-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.21
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sun Dec  4 20:40:52 2016
  InstallationDate: Installed on 2014-12-14 (721 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-12-04 (0 days ago)

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