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[Charlie Ott <charlieott@xxxxxxxxx>]

confirming on my setup as well.

openstack VM (similar to amazon ec2)
Running GDM3 (apt-get install gnome-shell) w/ NX Server to xorg-server-dummy package (since vm is headless)
LDAP Authentication w/ SSSD Package


Once I connect to the server, I am able to log in the first time using my ldap account.  Also since i already have a home folder (PAM mkhomedir) my LDAP 'firstName' and 'lastName' actually show up on the GDM3 login screen.  Which was a pleasant surprise.

however, once locked. I'm getting the error in /var/log/auth.log:
Jan  8 05:19:10 onr-geoserver gdm-password][12480]: pam_succeed_if(gdm-password:auth): requirement "user ingroup nopasswdlogin" not met by user "cott"
Jan  8 05:19:17 onr-geoserver gdm-password][12480]: pam_unix(gdm-password:auth): authentication failure; logname=cott uid=0 euid=0 tty=:0 ruser= rhost=  user=cott
Jan  8 05:19:19 onr-geoserver gdm-password][12480]: pam_sss(gdm-password:auth): authentication success; logname=cott uid=0 euid=0 tty=:0 ruser= rhost= user=cott
Jan  8 05:19:19 onr-geoserver gdm-password][12480]: gkr-pam: unlocked login keyring
Jan  8 05:19:19 onr-geoserver systemd-logind[1359]: Removed session 3.
Jan  8 05:19:19 onr-geoserver gdm-password][12708]: pam_succeed_if(gdm-password:auth): requirement "user ingroup nopasswdlogin" not met by user "cott"


it seems 'pam_sss' is happy (auth. success), but 'pam_unix' is not.

This is all purely package installs from ubuntu 14.04 cloud image.  no
custom configs except for the dummy monitor in xorg.conf.  which i doubt
is related.

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https://bugs.launchpad.net/bugs/1314095

Title:
  Unity Lockscreen in 14.04 can't unlock when using LDAP account

Status in Unity:
  Incomplete
Status in unity package in Ubuntu:
  Incomplete

Bug description:
  My setup is:

  Ubuntu 14.04 LTS,
  ldap accounts,
  krb5 authentication,
  Lightdm,
  Unity session

  ldap+krb5 is configured using nss-ldapd and nslcd. It works fine. getent passwd and getent shadow works fine.
  I am able to login in console without any problems.
  I was able to login in lightdm.
  Then I used the lock screen.
  I could not disable the lock screen using my password.
  I rebooted my computer.

  Now:
  After logging in through lightdm, the unity lockscreen locks the screen immediately and I can not disable it using my password.

  From my short inspection of auth.log and unix_chkpwd sources it seems,
  that unix_chkpwd works fine when called from lightdm and fails to get
  user info when called from unity lockscreen.


  lsb_release -rd
  Description:	Ubuntu 14.04 LTS
  Release:	14.04

  apt-cache policy unity lightdm libpam-modules
  unity:
    Installed: 7.2.0+14.04.20140416-0ubuntu1
    Candidate: 7.2.0+14.04.20140416-0ubuntu1
    Version table:
   *** 7.2.0+14.04.20140416-0ubuntu1 0
          500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
          100 /var/lib/dpkg/status
  lightdm:
    Installed: 1.10.0-0ubuntu3
    Candidate: 1.10.0-0ubuntu3
    Version table:
   *** 1.10.0-0ubuntu3 0
          500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
          100 /var/lib/dpkg/status
  libpam-modules:
    Installed: 1.1.8-1ubuntu2
    Candidate: 1.1.8-1ubuntu2
    Version table:
   *** 1.1.8-1ubuntu2 0
          500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
          100 /var/lib/dpkg/status

  Contents of /var/log/auth.log:

  Apr 29 06:49:27 localhost lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "user"
  Apr 29 06:49:31 localhost lightdm: pam_unix(lightdm:auth): authentication failure; logname= uid=0 euid=0 tty=:2 ruser= rhost=  user=user
  Apr 29 06:49:31 localhost lightdm: pam_krb5(lightdm:auth): user user authenticated as user@NETWORK
  Apr 29 06:49:32 localhost lightdm[15604]: pam_unix(lightdm-greeter:session): session closed for user lightdm
  Apr 29 06:49:37 localhost unix_chkpwd[15825]: check pass; user unknown
  Apr 29 06:49:37 localhost unix_chkpwd[15825]: password check failed for user (user)
  Apr 29 06:49:37 localhost compiz: pam_unix(lightdm:auth): authentication failure; logname= uid=1001 euid=1001 tty= ruser= rhost=  user=user
  Apr 29 06:49:37 localhost compiz: pam_krb5(lightdm:auth): user user authenticated as user@NETWORK
  Apr 29 06:49:37 localhost unix_chkpwd[15826]: could not obtain user info (user)
  Apr 29 06:49:37 localhost unix_chkpwd[15827]: could not obtain user info (user)
  Apr 29 06:49:37 localhost compiz: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "user"

  cat /etc/pam.d/common-auth 
  account     required    pam_unix.so
  auth        required    pam_group.so
  auth [success=2 default=ignore] pam_unix.so try_first_pass nullok_secure
  auth [success=1 default=ignore] pam_krb5.so try_first_pass minimum_uid=200
  auth        requisite   pam_deny.so
  auth        required    pam_permit.so

  auth        optional    pam_afs_session.so minimum_uid=200
  auth        optional    pam_ecryptfs.so unwrap
  auth        optional    pam_cap.so

  cat /etc/pam.d/common-account 
  account     required    pam_unix.so

  cat /etc/pam.d/lightdm
  auth        requisite   pam_nologin.so
  auth        sufficient  pam_succeed_if.so user ingroup nopasswdlogin
  @include common-auth
  auth        optional    pam_gnome_keyring.so
  @include common-account
  session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so close
  auth        optional    pam_group.so
  session     required    pam_limits.so
  @include common-session
  session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so open
  session     optional    pam_gnome_keyring.so auto_start
  session     required    pam_env.so readenv=1
  session     required    pam_env.so readenv=1 user_readenv=1 envfile=/etc/default/locale
  @include common-password

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