[Bug 1913424] Re: When trying to upgrade from version 18.04 ot 20.04 there is an unresolvable problem, however no problem is stated anywhere

[Brian Murray]

*** This bug is a duplicate of bug 1889250 ***
    https://bugs.launchpad.net/bugs/1889250

Reviewing the files from your upgrade attempt you have installed nodejs
from a location other than the offical Ubuntu archive. This version of
nodejs is greater than the one in the official archive and is keeping
some python packages installed which then prevents the upgrade from
being calculated. Please remove nodejs along with any other packages
from that archive and disable the archive. 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: nodesource-nodejs

** This bug has been marked a duplicate of bug 1889250
   Unable to calculate the upgrade to 20.04 due to nodejs from nodesource

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https://bugs.launchpad.net/bugs/1913424

Title:
  When trying to upgrade from version 18.04 ot 20.04 there is an
  unresolvable problem, however no problem is stated anywhere

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

Bug description:
  When trying to upgrade from version 18.04 to 20.04 i do get an error
  message which says

  "An unresolvable problem occurred while calculating the upgrade.

   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'."

  The log files didnt tell me anything i can use atleast, so i have no
  idea where to go further to resolve the problem. Tried to restart the
  computer after deactivating some pdds from nodejs and google without
  anything being resolved.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.42
  ProcVersionSignature: Ubuntu 5.4.0-64.72~18.04.1-generic 5.4.78
  Uname: Linux 5.4.0-64-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.21
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Jan 27 12:57:19 2021
  InstallationDate: Installed on 2019-09-18 (496 days ago)
  InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2021-01-27 (0 days ago)
  VarLogDistupgradeTermlog:

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