[Bug 1816313] [NEW] Update to Ubuntu 18. failed

[wi957]

Public bug reported:

Error message:

Es konnte nicht ermittelt werden, welche Systemaktualisierungen
verfügbar sind

An unresolvable problem occurred while calculating the upgrade.

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

If you want to investigate this yourself the log files in '/var/log
/dist-upgrade' will contain details about the upgrade. Specifically,
look at 'main.log' and 'apt.log'.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.26
ProcVersionSignature: Ubuntu 4.4.0-142.168-generic 4.4.167
Uname: Linux 4.4.0-142-generic i686
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: i386
CrashDB: ubuntu
CurrentDesktop: XFCE
Date: Sun Feb 17 20:26:21 2019
InstallationDate: Installed on 2013-08-18 (2009 days ago)
InstallationMedia: Xubuntu 12.04.2 LTS "Precise Pangolin" - Release i386 (20130213)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2019-02-17 (0 days ago)
VarLogDistupgradeTermlog:

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


** Tags: apport-bug dist-upgrade i386 third-party-packages xenial

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Ubuntu.
https://bugs.launchpad.net/bugs/1816313

Title:
  Update to Ubuntu 18. failed

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

Bug description:
  Error message:

  Es konnte nicht ermittelt werden, welche Systemaktualisierungen
  verfügbar sind

  An unresolvable problem occurred while calculating the upgrade.

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

  If you want to investigate this yourself the log files in '/var/log
  /dist-upgrade' will contain details about the upgrade. Specifically,
  look at 'main.log' and 'apt.log'.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.26
  ProcVersionSignature: Ubuntu 4.4.0-142.168-generic 4.4.167
  Uname: Linux 4.4.0-142-generic i686
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: i386
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Sun Feb 17 20:26:21 2019
  InstallationDate: Installed on 2013-08-18 (2009 days ago)
  InstallationMedia: Xubuntu 12.04.2 LTS "Precise Pangolin" - Release i386 (20130213)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2019-02-17 (0 days ago)
  VarLogDistupgradeTermlog:

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