*** This bug is a duplicate of bug 1949970 ***
    https://bugs.launchpad.net/bugs/1949970

This appears to have been addressed in bug #1949970 by making use of a
feature of the PAM config. In /etc/pam.d/lightdm, I see e.g.

    -auth    optional        pam_gnome_keyring.so
    -auth    optional        pam_kwallet.so
    -auth    optional        pam_kwallet5.so

>From the pam.conf(5) man page:

       If the *type* value from the list above
       is prepended with a - character the PAM
       library will not log to the system log if
       it is not possible to load the module
       because it is missing in the system. This
       can be useful especially for modules
       which are not always installed on the
       system and are not required for correct
       authentication and authorization of the
       login session.

I'll mark this issue as a duplicate of the newer one, even though it
should be the other way around.

** This bug has been marked a duplicate of bug 1949970
   attempt to dlopen nonexistent pam_kwallet.so spams log

-- 
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Touch seeded packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/1404172

Title:
  lightdm: PAM unable to dlopen(pam_kwallet.so):
  /lib/security/pam_kwallet.so: cannot open shared object file: No such
  file or directory

Status in One Hundred Papercuts:
  Confirmed
Status in Light Display Manager:
  Confirmed
Status in systemd:
  New
Status in lightdm package in Ubuntu:
  Confirmed

Bug description:
  auth.log complaints:

  Dec 19 07:24:42 u32 lightdm: PAM unable to dlopen(pam_kwallet.so): 
/lib/security/pam_kwallet.so: cannot open shared object file: No such file or 
directory
  Dec 19 07:24:42 u32 lightdm: PAM adding faulty module: pam_kwallet.so
  Dec 19 07:24:42 u32 lightdm: pam_unix(lightdm-greeter:session): session 
opened for user lightdm by (uid=0)
  Dec 19 07:24:42 u32 systemd-logind[656]: New session c1 of user lightdm.
  Dec 19 07:24:42 u32 systemd: pam_unix(systemd-user:session): session opened 
for user lightdm by (uid=0)
  Dec 19 07:24:46 u32 lightdm: PAM unable to dlopen(pam_kwallet.so): 
/lib/security/pam_kwallet.so: cannot open shared object file: No such file or 
directory
  Dec 19 07:24:46 u32 lightdm: PAM adding faulty module: pam_kwallet.so
  Dec 19 07:24:46 u32 lightdm: pam_succeed_if(lightdm:auth): requirement "user 
ingroup nopasswdlogin" not met by user "oem"
  Dec 19 07:24:53 u32 lightdm: pam_unix(lightdm-greeter:session): session 
closed for user lightdm
  Dec 19 07:24:53 u32 lightdm: pam_unix(lightdm:session): session opened for 
user oem by (uid=0)

  
  As per lp:1309535 #18 comment such 'warnings' should be silenced (as they 
scared unawared users about the both needs of pam's gnome/kde)

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: lightdm 1.13.0-0ubuntu2
  ProcVersionSignature: Ubuntu 3.18.0-7.8-generic 3.18.0
  Uname: Linux 3.18.0-7-generic i686
  NonfreeKernelModules: nvidia
  ApportVersion: 2.15.1-0ubuntu1
  Architecture: i386
  CurrentDesktop: GNOME
  Date: Fri Dec 19 10:47:07 2014
  SourcePackage: lightdm
  UpgradeStatus: No upgrade log present (probably fresh install)

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