[Bug 1882449] Re: Upgrade from 18.04 LTS to 20.04LTS failed

[Brian Murray]

Reviewing the files from your upgrade attempt you seem to have enabled a
PPA that provides Xorg and python packages. This will prevent the
upgrade as that PPA contains packages which generate failures when
trying to calculate the upgrade. 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

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https://bugs.launchpad.net/bugs/1882449

Title:
  Upgrade from 18.04 LTS to 20.04LTS failed

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

Bug description:
  main.log

  2020-06-07 21:24:46,248 DEBUG Marking 'ubuntu-desktop' for upgrade
  2020-06-07 21:24:46,486 WARNING Can't mark 'ubuntu-desktop' for upgrade (E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.)
  2020-06-07 21:25:38,166 ERROR Dist-upgrade failed: 'Broken packages after upgrade: colord'

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.37
  ProcVersionSignature: Ubuntu 5.3.0-53.47~18.04.1-generic 5.3.18
  Uname: Linux 5.3.0-53-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.15
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Jun  7 21:38:16 2020
  InstallationDate: Installed on 2020-01-20 (138 days ago)
  InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-06-07 (0 days ago)
  VarLogDistupgradeTermlog:

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