[Bug 1875141] Re: Dist-upgrade failed: Can't mark 'ubuntu-desktop' for upgrade (colord)

[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/1875141

Title:
  Dist-upgrade failed: Can't mark 'ubuntu-desktop' for upgrade (colord)

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

Bug description:
  2020-04-26 10:45:29,204 DEBUG Marking 'ubuntu-desktop' for upgrade
  2020-04-26 10:45:29,320 WARNING Can't mark 'ubuntu-desktop' for upgrade (E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.)
  2020-04-26 10:45:29,772 ERROR Dist-upgrade failed: 'Broken packages after upgrade: colord'
  2020-04-26 10:45:29,773 DEBUG abort called

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.37
  ProcVersionSignature: Ubuntu 5.3.0-46.38~18.04.1-generic 5.3.18
  Uname: Linux 5.3.0-46-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.9-0ubuntu7.14
  Architecture: amd64
  CrashDB: ubuntu
  Date: Sun Apr 26 10:39:23 2020
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2019-03-19 (403 days ago)
  InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-04-26 (0 days ago)

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