The reason was apt preferences for openssh last version to be installed from noble repository:
$ cat /etc/apt/preferences.d/nobble-openssh Package: * Pin: release o=Ubuntu,n=noble Pin-Priority: 40 Package: openssh* Pin: release o=Ubuntu,n=noble Pin-Priority: 400 Package: libc6 Pin: release o=Ubuntu,n=noble Pin-Priority: 400 Package: libc-bin Pin: release o=Ubuntu,n=noble Pin-Priority: 400 Package: libssl3 Pin: release o=Ubuntu,n=noble Pin-Priority: 400 Package: runit-helper Pin: release o=Ubuntu,n=noble Pin-Priority: 400 $ Upgraded successfully after removal of that file. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2086793 Title: do-release-upgrade 22.04 => 24.04 Could not calculate the upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/2086793/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
