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

[Aakash Deshpande]

Public bug reported:

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)

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade precise running-unity

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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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