[Bug 1385657] [NEW] Upgrade to 14.10 fails - could not calculate the upgrade

[Mark M Lambert]

Public bug reported:

Upgrade from 14.04 to 14.10 fails with the following message:

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 

--
I've removed all unofficial packages but still get the same error.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.5
ProcVersionSignature: Ubuntu 3.13.0-38.65-generic 3.13.11.8
Uname: Linux 3.13.0-38-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Sat Oct 25 23:54:26 2014
InstallationDate: Installed on 2012-12-15 (679 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2014-10-25 (0 days ago)
mtime.conffile..etc.update.manager.release.upgrades: 2014-10-24T10:55:19.046694

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade trusty

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https://bugs.launchpad.net/bugs/1385657

Title:
  Upgrade to 14.10 fails - could not calculate the upgrade

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

Bug description:
  Upgrade from 14.04 to 14.10 fails with the following message:

  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 

  --
  I've removed all unofficial packages but still get the same error.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.5
  ProcVersionSignature: Ubuntu 3.13.0-38.65-generic 3.13.11.8
  Uname: Linux 3.13.0-38-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sat Oct 25 23:54:26 2014
  InstallationDate: Installed on 2012-12-15 (679 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2014-10-25 (0 days ago)
  mtime.conffile..etc.update.manager.release.upgrades: 2014-10-24T10:55:19.046694

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