[Bug 2150096] Re: do-release-upgrade aborts

[Nick Rosbrook]

** Tags added: rls-rr-incoming

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https://bugs.launchpad.net/bugs/2150096

Title:
  do-release-upgrade aborts

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

Bug description:
  Upgrading a 24.04 to 26.04 aborts without identifying a reason:

  ```
  sudo do-release-upgrade -d
  ...
  Checking package manager
  Reading package lists... Done    
  Building dependency tree... Done 
  Reading state information... Done

  Calculating the changes

  Calculating the changes

  Could not determine the upgrade

  An unresolvable problem occurred while calculating the upgrade.

  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'. 

  
  Restoring original system state

  Aborting
  ```

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: ubuntu-release-upgrader-core 1:24.04.28
  ProcVersionSignature: Ubuntu 6.8.0-110.110-generic 6.8.12
  Uname: Linux 6.8.0-110-generic x86_64
  NonfreeKernelModules: zfs
  ApportVersion: 2.28.1-0ubuntu3.8
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CrashDB: ubuntu
  CurrentDesktop: Miriway
  Date: Thu Apr 23 11:31:41 2026
  InstallationDate: Installed on 2021-02-02 (1906 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to noble on 2026-04-23 (0 days ago)

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