[Bug 1361496] Re: With the Upgrading Ubuntu 12.04 64bit on 14.04 there comes mistake: It could not be determined which system actualizations are available

[Brian Murray]

*** This bug is a duplicate of bug 1279762 ***
    https://bugs.launchpad.net/bugs/1279762

** This bug is no longer a duplicate of bug 1356142
   not able to upgrade from 12.04 to 14.04
** This bug has been marked a duplicate of bug 1279762
   upgrade to 14.04 from 13.10 or 12.04 failed - cinnamon fails to upgrade

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https://bugs.launchpad.net/bugs/1361496

Title:
  With the Upgrading Ubuntu 12.04 64bit on 14.04 there comes mistake: It
  could not be determined which system actualizations are available

Status in “update-manager” package in Ubuntu:
  Confirmed

Bug description:
  Es konnte nicht ermittelt werden, welche Systemaktualisierungen
  verfügbar sind

  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

  Falls nichts von dem zutrifft, melden Sie diesen Fehler bitte, indem
  Sie den Befehl »ubuntu-bug ubuntu-release-upgrader-core« in einem
  Terminal ausführen.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.17
  ProcVersionSignature: Ubuntu 3.2.0-68.102-generic 3.2.62
  Uname: Linux 3.2.0-68-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu17.7
  Architecture: amd64
  Date: Tue Aug 26 07:52:00 2014
  GsettingsChanges:
   com.ubuntu.update-manager first-run false
   com.ubuntu.update-manager launch-time 1409031732
   com.ubuntu.update-manager show-details true
   com.ubuntu.update-manager window-height 740
   com.ubuntu.update-manager window-width 942
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: Upgraded to precise on 2014-08-26 (0 days ago)
  VarLogDistupgradeTermlog:

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