[Bug 1769484] Re: Tried to update from 14.04 to 16.04

[Ubuntu Foundations Team Bug Bot]

** Tags added: trusty2xenial

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https://bugs.launchpad.net/bugs/1769484

Title:
  Tried to update from 14.04 to 16.04

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

Bug description:
  I first updated from ubuntu 12.04 to 14.04. This worked fine
  An update from 14.04 to 16.04 is unfortunately not possible.

  I always get to following messages:
  Es konnte nicht ermittelt werden, welche Systemaktualisierungen verfügbar sind

  Ein unlösbares Problem trat beim Ermitteln der Systemaktualisierung
  auf.

   Dies kann verursacht worden sein durch:
   * Aktualisieren auf eine Vorabversion von Ubuntu
   * Verwendung der aktuellen Vorabversion von Ubuntu
   * Inoffizielle Softwarepakete, die nicht von Ubuntu bereitgestellt wurden

  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 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.10
  ProcVersionSignature: Ubuntu 3.13.0-145.194-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-145-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.27
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sun May  6 18:34:01 2018
  InstallationDate: Installed on 2011-03-07 (2616 days ago)
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2018-05-06 (0 days ago)
  VarLogDistupgradeTermlog:

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