Public bug reported: The migration from 12.04 LTS to 12.10 (64bits) failed on my box because of 2 packages dependency failures: libpam-modules and hostname.
I recover it in a shell after reboot (no GUI was available btw) by - using repeated calls to aptitude -f install ( the process stopped several times because of "too many errors" messages) - manually installing some packages - manually removing some packages with failed dependencies - manually installing the 2 above packages (aptitude install libpam-modules hostname) I'm upgrading from 12.10 to 13.04 right now, and the same failure seems to happen again during the package installation process (after the download step). So I think this could affect users migrating from 12.04 TLS to the next TLS release. FWIW, the original distribution installed on this box was 11.04 (Natty), and I used some custom sources.list at some point (medibuntu and another one to install the Zend PHP framework) I did not investigate a lot, but this could be related to mixed dependencies between 32bit and 64bit versions of some packages. $ lsb_release -d Description: Ubuntu 12.10 $ aptitude search libpam-modules BB libpam-modules - Pluggable Authentication Modules for PAM p libpam-modules:i386 - Pluggable Authentication Modules for PAM u libpam-modules-bin - Pluggable Authentication Modules for PAM - p libpam-modules-bin:i386 - Pluggable Authentication Modules for PAM - $ apt-cache policy libpam-modules libpam-modules: Installé : 1.1.3-7ubuntu3 Candidat : 1.1.3-8ubuntu2 Table de version : 1.1.3-8ubuntu2 0 500 http://be.archive.ubuntu.com/ubuntu/ raring/main amd64 Packages *** 1.1.3-7ubuntu3 0 100 /var/lib/dpkg/status $ apt-cache policy libpam-modules:i386 libpam-modules:i386: Installé : (aucun) Candidat : 1.1.3-8ubuntu2 Table de version : 1.1.3-8ubuntu2 0 500 http://be.archive.ubuntu.com/ubuntu/ raring/main i386 Packages $ apt-cache policy libpam-modules-bin libpam-modules-bin: Installé : 1.1.3-8ubuntu2 Candidat : 1.1.3-8ubuntu2 Table de version : *** 1.1.3-8ubuntu2 0 $ apt-cache policy hostname hostname: Installé : 3.11ubuntu1 Candidat : 3.12ubuntu1 Table de version : 3.12ubuntu1 0 500 http://be.archive.ubuntu.com/ubuntu/ raring/main amd64 Packages *** 3.11ubuntu1 0 100 /var/lib/dpkg/status $ apt-cache policy hostname:i386 hostname:i386: Installé : (aucun) Candidat : 3.12ubuntu1 Table de version : 3.12ubuntu1 0 500 http://be.archive.ubuntu.com/ubuntu/ raring/main i386 Packages ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1240707 Title: Migration failure to kubuntu 12.10 64bits (hostname, libpam-modules) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1240707/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs