[Bug 2078584] Re: Upgrade from Ubuntu 22 to 24 failes with "unresolvable problem"

[Julian Andres Klode]

Please backup your databases, remove postgresl-12 before upgrading.
postgresql-12 was only shipped in 20.04 (!), and it's dependencies are
no longer installable in 24.04. After the upgrade, install the main
postgresql package and restore the databases.


** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Incomplete

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/2078584

Title:
  Upgrade from Ubuntu 22 to 24 failes with "unresolvable problem"

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

Bug description:
  Calculating the changes

  Calculating the changes

  Could not calculate the upgrade

  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. 

  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'.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: ubuntu-release-upgrader-core 1:22.04.19
  ProcVersionSignature: Ubuntu 5.15.0-119.129-generic 5.15.160
  Uname: Linux 5.15.0-119-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu82.6
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CrashDB: ubuntu
  CurrentDesktop: KDE
  Date: Sat Aug 31 20:41:17 2024
  InstallationDate: Installed on 2019-11-18 (1747 days ago)
  InstallationMedia: Kubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to jammy on 2024-08-31 (0 days ago)

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