[Bug 1176910] Re: pam-auth-update can fail during raring -> saucy upgrade leading you to a broken session

[Martin Pitt]

What does it do to determine whether the config was user-modified? I can
edit it by hand, and yet p-a-u updates the file correctly here. Does it
store some md5s somewhere, or use the .pam-old files?

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https://bugs.launchpad.net/bugs/1176910

Title:
  pam-auth-update can fail during raring -> saucy upgrade leading you to
  a broken session

Status in “pam” package in Ubuntu:
  Invalid

Bug description:
  Context: a year ago, I added fingerprint support to my pam
  configuration (and then removed it)

  During the raring -> saucy upgrade /usr/sbin/pam-auth-update failed (it needs --force), running it manually was telling me:
  pam-auth-update: Local modifications to /etc/pam.d/common-*, not updating.
  pam-auth-update: Run pam-auth-update --force to override.

  The consequence is that as I have no system-logind support after it, I have my user not added in any group:
  - no hw accel (as not in the video group)
  - no sound (no audio/pulse group)
  - no nm-applet showing…

  I'm attaching the old common-session pam configuration, before forcing the update. I have also some .pam-old files
  After forcing it, I have:
  +sessio noptional pam_winbind.so
  +session optional pam_systemd.so
  and everything is back to normal (my user is now dynamically added to the relevant groups)

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: libpam-runtime 1.1.3-8ubuntu2
  ProcVersionSignature: Ubuntu 3.9.0-0.4-generic 3.9.0
  Uname: Linux 3.9.0-0-generic x86_64
  ApportVersion: 2.10-0ubuntu1
  Architecture: amd64
  Date: Mon May  6 15:40:22 2013
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2012-05-28 (342 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: pam
  UpgradeStatus: No upgrade log present (probably fresh install)

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