Public bug reported: I just upgrade from 14.04 to 16.04 before. I had some broken packages that I corrected.
Then: sudo apt-get update sudo apt-get upgrade sudo do-release-upgrade leads me to: -> Un problème insoluble est survenu lors de la préparation de la mise à niveau. -> ENGLISH: An unresolvable problem occurred while calculating the upgrade In /var/log/dist-upgrade/XXX/main.log : -> ERROR Dist-upgrade failed: 'E:Erreur, pkgProblem::Resolve a généré des ruptures -> ENGLISH: pkgProblemResolver::Resolve generated breaks, this may be caused by held packages Thanks for any help ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.26 ProcVersionSignature: Ubuntu 4.4.0-141.167-generic 4.4.162 Uname: Linux 4.4.0-141-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.18 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Fri Jan 4 00:01:45 2019 PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to xenial on 2019-01-03 (0 days ago) mtime.conffile..etc.update-manager.release-upgrades: 2019-01-02T16:24:36.364160 ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade third-party-packages xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1810450 Title: LTS dist upgrade failure from 16.04 to 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1810450/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs