[Bug 1922232] Re: Unable to upgrade from Ubuntu 18.04 to 20.04.2

[Queen]

I had exactly the same problem, the system did not want to update in any
way, and there were messages on the command line that such an update was
not possible for some reasons. Therefore, I downloaded the .iso file
with system 20.04.2 and installed the system again from this file.

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https://bugs.launchpad.net/bugs/1922232

Title:
  Unable to upgrade from Ubuntu 18.04 to 20.04.2

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

Bug description:
  An unresolvable problem occurred while calculating the upgrade.

   This was likely caused by:
   * Unofficial software packages not provided by Ubuntu
  Please use the tool 'ppa-purge' from the ppa-purge 
  package to remove software from a Launchpad PPA and 
  try the upgrade again.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.42
  ProcVersionSignature: Ubuntu 5.4.0-70.78~18.04.1-generic 5.4.94
  Uname: Linux 5.4.0-70-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.9-0ubuntu7.23
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Apr  1 17:27:42 2021
  InstallationDate: Installed on 2021-02-25 (34 days ago)
  InstallationMedia: Ubuntu 18.04.5 LTS "Bionic Beaver" - Release amd64 (20200806.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2021-04-01 (0 days ago)
  VarLogDistupgradeTermlog:

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