[Bug 2022381] Re: Ubuntu 20.04 to 22.04 update bug.

[Nick Rosbrook]

*** This bug is a duplicate of bug 1970018 ***
    https://bugs.launchpad.net/bugs/1970018

Reviewing the files from your upgrade attempt, you have installed
packages from the deadsnakes PPA. Some of the packages installed are
newer than those in the official archive, which is keeping some python
packages installed which then prevents the upgrade from being
calculated. Please try using the ppa-purge tool to remove packages
installed from ppa:deadsnakes/ppa. After that you can try upgrading
again and if it still fails open a new bug report. Thanks and good luck!

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Invalid

** Tags added: deadsnakes-ppa

** This bug has been marked a duplicate of bug 1970018
   Cannot upgrade to ubuntu 21.10 from ubuntu 20.04.

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https://bugs.launchpad.net/bugs/2022381

Title:
  Ubuntu 20.04 to 22.04 update bug.

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

Bug description:
  I'm trying to update from ubuntu 20.04 to ubuntu 22.04 and I'm
  enconutering the following error.

  Could not calculate the upgrade 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. If none of this applies, then please
  report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-
  core' in a terminal. If you want to investigate this yourself the log
  files in '/var/log/dist-upgrade' will contain details about the
  upgrade. Specifically, look at 'main.log' and 'apt.log'.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubuntu-release-upgrader-core 1:20.04.41
  ProcVersionSignature: Ubuntu 5.15.0-73.80~20.04.1-generic 5.15.98
  Uname: Linux 5.15.0-73-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Jun  2 20:54:17 2023
  InstallationDate: Installed on 2022-05-30 (368 days ago)
  InstallationMedia: Ubuntu 20.04.4 LTS "Focal Fossa" - Release amd64 (20220223)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to focal on 2023-06-02 (0 days ago)

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