[Bug 2143656] Re: Cannot upgrade from 22.04 to 24.04

[Enock Kasaadha]

*** This bug is a duplicate of bug 2084610 ***
    https://bugs.launchpad.net/bugs/2084610


Marking as a duplicate of bug #2084610, the oldest Confirmed bug for
this upgrader failure. All reports of these two bugs share the same
package version (ubuntu-release-upgrader-core 1:22.04.20) and the same
error string. The probable trigger here is legacy library accumulation
(system installed from Trusty in 2014, so many days old, no PPAs, large
Foreign: list of libpython2.7, libpodofo0.9.7, etc.), but the upgrader
code path is shared with the earlier bug report paths

** This bug has been marked a duplicate of bug 2084610
   Update marks update-manager for removal causing to abort

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https://bugs.launchpad.net/bugs/2143656

Title:
  Cannot upgrade from 22.04 to 24.04

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

Bug description:
  I am trying to upgrade from Ubuntu 22.04 to 24.04 and do-release-upgrade failed at the beginning with the error message:
  Calculating the changes

  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

  The package 'update-manager' is marked for removal but it is in the
  removal deny list.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: ubuntu-release-upgrader-core 1:22.04.20
  ProcVersionSignature: Ubuntu 5.15.0-171.181-generic 5.15.196
  Uname: Linux 5.15.0-171-generic x86_64
  ApportVersion: 2.20.11-0ubuntu82.10
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CrashDB: ubuntu
  CurrentDesktop: Unity:Unity7:ubuntu
  Date: Sun Mar  8 10:15:52 2026
  InstallationDate: Installed on 2014-12-06 (4109 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to jammy on 2026-03-08 (0 days ago)

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