Public bug reported: I am trying to upgrade from 14.04 to 16.04.
ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: ubuntu-release-upgrader-core 1:0.220.9 ProcVersionSignature: Ubuntu 3.13.0-142.191-generic 3.13.11-ckt39 Uname: Linux 3.13.0-142-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.27 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Sat Mar 3 01:32:09 2018 InstallationDate: Installed on 2014-12-24 (1165 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to trusty on 2018-03-03 (0 days ago) VarLogDistupgradeTermlog: mtime.conffile..etc.update.manager.release.upgrades: 2018-03-03T00:19:11.327790 ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade third-party-packages trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1753045 Title: "Could not calculate the upgrade" trying to upgrade from 14.04 to 16.04. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1753045/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs