[Bug 1931762] Re: Error upgrading distro

[Chris Guiver]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.

Looking at the messages, one issue appears to be a 3rd party xenial
package - mysql-community-client 5.7.21-1ubuntu16.04 , as that package
is preventing install of focal (20.04) packages.

Unofficial software packages not provided by Ubuntu should be removed
prior to upgrade, the upgrade performed, then if needed, the 3rd party
packages returned (or versions appropriate for your new release) to
avoid issues with your upgrade.

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https://bugs.launchpad.net/bugs/1931762

Title:
  Error upgrading distro

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

Bug description:
  Error upgradeing to 20.04.  error Dist-upgrade failed: 'E:Unable to
  correct problems, you have held broken packages.'

  Checked for boken packages:  None
  Ran updates and autoclean
  ried removing Python as tlogs indivcate this may be a problem

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.44
  ProcVersionSignature: Ubuntu 4.15.0-142.146-generic 4.15.18
  Uname: Linux 4.15.0-142-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.24
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Jun 12 10:53:45 2021
  InstallationDate: Installed on 2017-01-11 (1612 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2021-06-12 (0 days ago)

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