[Bug 2000651] Re: broken-packages-error while upgrading ubuntu from 20.04 to 22.04

[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: Confirmed => 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/2000651

Title:
  broken-packages-error while upgrading ubuntu from 20.04 to 22.04

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

Bug description:
  sudo apt-get update and sudo apt-get upgrade runs totally fine,
  nothing wrong came out, just by running sudo do-release-upgrade the
  error came out:

  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. 

  although i've deleted all ppa files, still not working. I'm wondering
  if it could be the problem with pyhont3.10, i also installed it but
  not my default python3 version(default is python3.8), cuz in apt.log
  it shows:

  Reinst Failed early because of libpython3.10-stdlib:amd64

  several times.

  Many thanks in advance~

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubuntu-release-upgrader-core 1:20.04.39
  ProcVersionSignature: Ubuntu 5.15.0-56.62~20.04.1-generic 5.15.64
  Uname: Linux 5.15.0-56-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.25
  Architecture: amd64
  CasperMD5CheckResult: skip
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Dec 28 22:13:12 2022
  InstallationDate: Installed on 2021-10-24 (430 days ago)
  InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to focal on 2022-12-28 (0 days ago)

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