[Bug 1398824] [NEW] Upgrade 14.04 to 14.10 failed with ‘Could not determine the upgrade’

[Smylers]

Public bug reported:

Running Lubuntu 14.04, I tried to upgrade to 14.10 with:

  $ update-manager -d &

I pressed the ‘Upgrade’ button, then got a window with the release
information, which started:

  Welcome to the Ubuntu 'Utopic Unicorn' development release

  This release is still in development. Do not install it on production
machines.

That isn't right (it has now been released), but I proceeded anyway.

  Could not determine 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.

None of the above apply, hence this report.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.5
ProcVersionSignature: Ubuntu 3.13.0-41.70-generic 3.13.11.11
Uname: Linux 3.13.0-41-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: LXDE
Date: Wed Dec  3 13:16:58 2014
InstallationDate: Installed on 2012-03-01 (1007 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2014-12-03 (0 days ago)
VarLogDistupgradeTermlog:

** 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/1398824

Title:
  Upgrade 14.04 to 14.10 failed with ‘Could not determine the upgrade’

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

Bug description:
  Running Lubuntu 14.04, I tried to upgrade to 14.10 with:

    $ update-manager -d &

  I pressed the ‘Upgrade’ button, then got a window with the release
  information, which started:

    Welcome to the Ubuntu 'Utopic Unicorn' development release

    This release is still in development. Do not install it on
  production machines.

  That isn't right (it has now been released), but I proceeded anyway.

    Could not determine 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.

  None of the above apply, hence this report.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.5
  ProcVersionSignature: Ubuntu 3.13.0-41.70-generic 3.13.11.11
  Uname: Linux 3.13.0-41-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: LXDE
  Date: Wed Dec  3 13:16:58 2014
  InstallationDate: Installed on 2012-03-01 (1007 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2014-12-03 (0 days ago)
  VarLogDistupgradeTermlog:

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