[Bug 1615011] Re: Upgrade from Ubuntu 15.10 to 16.04 failed

[Ubuntu Foundations Team Bug Bot]

** Tags added: wily2xenial

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https://bugs.launchpad.net/bugs/1615011

Title:
  Upgrade from Ubuntu 15.10 to 16.04 failed

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

Bug description:
  Below is the error that pops up when I try to upgrade:
  Could not calculate 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 15.10
  Package: ubuntu-release-upgrader-core 1:15.10.14.4
  ProcVersionSignature: Ubuntu 3.13.0-44.73-generic 3.13.11-ckt12
  Uname: Linux 3.13.0-44-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Fri Aug 19 10:13:49 2016
  InstallationDate: Installed on 2014-10-07 (681 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to wily on 2016-08-19 (0 days ago)
  VarLogDistupgradeTermlog:

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