Migration failure to kubuntu 12.10 64bits (hostname, libpam-modules)

[Christophe Chisogne]

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

[Christophe Chisogne (cchisogne)]

Here's the bug report title automatically generated before the system tried to "dpkg --configure -a" ( it didn't sent it ).

package libpam-modules 1.1.3-7ubuntu3 failed to install/upgrade: ErrorMessage: problème de pré-dépendance - libpam-modules:amd64 non installé

Installing "libpam-modules:amd64" will most probably fix the issue for me