[Bug 1165461] Re: pam_winbind offline logon does not work in 12.04

[Giuseppe Paterno']

I'm not in charge of the bug, but  if your problem is missing passwd information, then the behavior of PAM  might be correct.
PAM is supposed to handle authentication only, NSS is the responsible part of getting user's info.
You might have a closer look to:
a) nscd, to cache users' info
b) SSSD (System Security Services Daemon), that is included in Ubuntu, to allow NSS information to be propagated and locally cached.
My eur 0.01

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https://bugs.launchpad.net/bugs/1165461

Title:
  pam_winbind offline logon does not work in 12.04

Status in “samba” package in Ubuntu:
  Incomplete

Bug description:
  The pam_winbind offline login does not work in 12.04 LTS with latest updates.
  My configuration.
  Client joined to domain with uidNumber set in AD.
  smb.conf with winbind offline logon = yes
  /etc/security/pam_winbind.conf with cached_login = yes
  PAM configuration is the "default" pam-auth-update configuration with winbind.

  If I am online everything works as expected. I can login with my AD account tstusr2.
  But if my notebook has no connection to the domain controller the offline login does not work anymore.
  The problem seems to be somehwere in PAM as PAM identifies the user as "unkown". See attachment auth.log.

  If I manually add my user to /etc/passwd the offline login works.
  tstusr2:*:50001:70005::/home:/bin/bash

  It can't be solution to add domain users to /etc/passwd. pam_winbind
  has to deal with it.

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