[Bug 1908826] Re: cannot upgrade to 20.04 LTS

[Brian Murray]

*** This bug is a duplicate of bug 1069133 ***
    https://bugs.launchpad.net/bugs/1069133

Reviewing the files from your upgrade attempt you seem to have enabled a
PPA that provides Xorg packages. This will prevent the upgrade as that
PPA contains package version numbers greater than the release to which
you are upgrading. You can revert the PPA by installing the ppa-purge
package from the official Ubuntu archive and then running 'sudo ppa-
purge ppa:oibaf/graphics-drivers'.  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: ppa xorg-oibaf-ppa

** This bug has been marked a duplicate of bug 1069133
   Get upgrade error 12.04 - 12.10 "Could not determine upgrade" - xorg from ppa

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https://bugs.launchpad.net/bugs/1908826

Title:
  cannot upgrade to 20.04 LTS

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

Bug description:
  It failed with 
  Er heeft zich een onoplosbaar probleem voorgedaan bij het berekenen van de upgrade.

   Dit komt waarschijnlijk door:
   * Onofficiële softwarepakketten die niet door Ubuntu verstrekt worden
  Gebruik het hulpmiddel ‘ppa-purge’ uit het ppa-purge-pakket
  om software te verwijderen uit een Launchpad PPA en
  probeer de upgrade opnieuw.

  If none of this applies, then please report this bug using the command
  'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. Als u dit
  zelf wilt onderzoeken kunt u de logbestanden in ‘/var/log/dist-
  upgrade’ raadplegen; deze bevatten  details over de upgrade. Kijk
  vooral naar ‘main.log’ en ‘apt.log’.

  I removed all the PPA's did not help
  Currently running 18.04 LTS

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.41
  ProcVersionSignature: Ubuntu 4.15.0-128.131-generic 4.15.18
  Uname: Linux 4.15.0-128-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.20
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Dec 20 16:18:30 2020
  InstallationDate: Installed on 2018-12-20 (730 days ago)
  InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-12-20 (0 days ago)
  VarLogDistupgradeTermlog:

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