[Bug 1793220] [NEW] upgrade from 16.04 to 18.04 not possible

[Peter Schust]

Public bug reported:

It could not be determined which upgrades are available.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
Uname: Linux 4.11.8-041108-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: XFCE
Date: Wed Sep 19 00:03:42 2018
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-09-18 (0 days ago)
VarLogDistupgradeTermlog:

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


** Tags: amd64 apport-bug dist-upgrade third-party-packages xenial

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https://bugs.launchpad.net/bugs/1793220

Title:
  upgrade from 16.04 to 18.04 not possible

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

Bug description:
  It could not be determined which upgrades are available.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  Uname: Linux 4.11.8-041108-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Wed Sep 19 00:03:42 2018
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-09-18 (0 days ago)
  VarLogDistupgradeTermlog:

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