Public bug reported: Can't migrate from 13.10 to 14.04 for an unknown reason with "do- release-upgrade".
1) I purged ppa gnome3-team/gnome3-staging and gnome3-team/gnome3-next 2) I did a dist-upgrade and a reboot. 3) Nothing wrong with "sudo dpkg --audit" 4) Here is the output of "do-release-upgrade" (french) : Calcul des modifications en cours Impossible d'évaluer la mise à niveau Un problème insoluble est survenu lors de la préparation de la mise à niveau. Ceci peut-être dû à : * la mise à niveau vers une version de développement d'Ubuntu ; * la version de développement d'Ubuntu est actuellement utilisée ; * des paquets logiciels non officiels, non fournis par Ubuntu. Si rien de tout cela ne s'applique, veuillez signaler ce bogue en utilisant la commande 'ubuntu-bug ubuntu-release-upgrader-core' dans un terminal. Restauration du système dans son état d'origine ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: ubuntu-release-upgrader-core 1:0.205.7 ProcVersionSignature: Ubuntu 3.11.0-20.35-generic 3.11.10.6 Uname: Linux 3.11.0-20-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 CrashDB: ubuntu Date: Sat May 10 11:17:58 2014 InstallationDate: Installed on 2012-09-17 (599 days ago) InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20120425-15:28 MarkForUpload: True PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to saucy on 2014-05-10 (0 days ago) ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade gnome3-ppa package-from-proposed saucy third-party-packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318145 Title: Can't migrate from 13.10 to 14.04 for an unknown reason To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1318145/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs