[Bug 2151328] Re: can't upgrade from 24.04 to 26.04

[Simon Johnsson]

*** This bug is a duplicate of bug 2150319 ***
    https://bugs.launchpad.net/bugs/2150319

** This bug has been marked a duplicate of bug 2150319
   lintian breaks upgrade from 24.04 to 26.04

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https://bugs.launchpad.net/bugs/2151328

Title:
  can't upgrade from 24.04 to 26.04

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

Bug description:
  lsb_release -rd
  No LSB modules are available.
  Description:	Ubuntu 24.04.4 LTS
  Release:	24.04

  When trying to upgrade from 24.04. to 26.04 using "update-manager -d", the upgrade process is interrupted and the following messang message appears:
  "Es konnte nicht ermittelt werden, welche Systemaktualisierungen verfügbar sind.
  Ein unlösbares Problem trat während der Berechnung der Systemaktualisierung auf.
  Wenn keine dieser zutrifft, melden Sie bitte den Fehler mithilfe des Befehls 'ubuntu-bug ubuntu-release-upgrader-core' in einem Terminal. Wenn Sie dies selbst untersuchen möchten, finden Sie in den Protokolldateien unter »/var/log/dist-upgrade« Details zur Systemaktualisierung. Schauen Sie sich insbesondere »main.log« und »apt.log« an."
  ["It was not possible to determine which system updates are available.
  An unsolvable problem occurred while calculating the system update.
  If none of these apply, please report the error using the command ‘ubuntu-bug ubuntu-release-upgrader-core’ in a terminal. ...]"

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: ubuntu-release-upgrader-core 1:24.04.28
  ProcVersionSignature: Ubuntu 6.8.0-111.111-generic 6.8.12
  Uname: Linux 6.8.0-111-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3.8
  Architecture: amd64
  CasperMD5json:
   {
     "result": "skip"
   }
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Wed May  6 15:58:27 2026
  InstallationDate: Installed on 2023-04-07 (1125 days ago)
  InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to noble on 2026-05-06 (0 days ago)
  VarLogDistupgradeTermlog:

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