[Bug 1807376] Re: can not upgrade to release 18.04 from 16.04

[Ubuntu Foundations Team Bug Bot]

** Tags added: xenial2bionic

** Tags added: third-party-packages

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https://bugs.launchpad.net/bugs/1807376

Title:
  can not upgrade to release 18.04 from 16.04

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

Bug description:
  Upgrading to release 18.04 crashes without any meaningful error, only

  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.26
  ProcVersionSignature: Ubuntu 4.4.0-112.135-generic 4.4.98
  Uname: Linux 4.4.0-112-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Fri Dec  7 13:28:02 2018
  InstallationDate: Installed on 2016-05-18 (932 days ago)
  InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-12-07 (0 days ago)

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