[Bug 1839786] [NEW] upgrade from 16.04 LTS to 18.04 Bionic Beaver fails - report says it is impossible to install a required package.

[paul]

Public bug reported:

upgrade from 16.04 LTS to 18.04 Bionic Beaver fails - report says  it is
impossible to install a required package.

Currently installed:  16.04 LTS

Tried to upgrade to: 18.04 Bionic Beaver

Upgrade message said to report this problem as a bug.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.15.0-39.42~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-39-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Sun Aug 11 14:27:15 2019
InstallationDate: Installed on 2018-02-14 (543 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2019-08-11 (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/1839786

Title:
  upgrade from 16.04 LTS to 18.04 Bionic Beaver fails - report says  it
  is impossible to install a required package.

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

Bug description:
  upgrade from 16.04 LTS to 18.04 Bionic Beaver fails - report says  it
  is impossible to install a required package.

  Currently installed:  16.04 LTS

  Tried to upgrade to: 18.04 Bionic Beaver

  Upgrade message said to report this problem as a bug.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.15.0-39.42~16.04.1-generic 4.15.18
  Uname: Linux 4.15.0-39-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Sun Aug 11 14:27:15 2019
  InstallationDate: Installed on 2018-02-14 (543 days ago)
  InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2019-08-11 (0 days ago)
  VarLogDistupgradeTermlog:

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