Thu Jun 14 00:39:38 UTC 2018

Public bug reported:

This is the message I recieve when trying to upgrade:

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.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.4.0-128.154-generic 4.4.131
Uname: Linux 4.4.0-128-generic i686
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: i386
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Thu Jun 14 01:32:08 2018
InstallationDate: Installed on 2014-03-13 (1553 days ago)
InstallationMedia: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release i386 (20140204)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-06-14 (0 days ago)
VarLogDistupgradeTermlog:

mtime.conffile..etc.update-manager.release-upgrades: 2018-04-28T00:53:16.736566

** 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/1776784

Title:
  I have been trying to upgrade from Ubuntu 16 to Ubuntu 17 but I get
  this message: 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.

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

Bug description:
  This is the message I recieve when trying to upgrade:

  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.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.4.0-128.154-generic 4.4.131
  Uname: Linux 4.4.0-128-generic i686
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: i386
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Thu Jun 14 01:32:08 2018
  InstallationDate: Installed on 2014-03-13 (1553 days ago)
  InstallationMedia: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release i386 (20140204)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-06-14 (0 days ago)
  VarLogDistupgradeTermlog:

  mtime.conffile..etc.update-manager.release-upgrades: 2018-04-28T00:53:16.736566

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