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[DJ <957486@xxxxxxxxxxxxxxxxxx>]

This bug still exists in 13.04. After installing SSSD, I can no longer
change the password for any user, including root.  Uinstalling SSSD
didn't fix the problem. How can I revert PAM to how it was before I
installed SSSD?

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https://bugs.launchpad.net/bugs/957486

Title:
  Cannot change a local user's password when sssd is enabled

Status in “sssd” package in Ubuntu:
  Fix Released

Bug description:
  Ubuntu 11.10 system. I have sssd set up. Using pam-auth-update I
  enable both sssd and Unix style authentication. The sssd uses LDAP
  only for user account lookup. Users defined in sssd can change
  passwords OK, however, local user accounts cannot, e.g. when logged in
  as a local user (btmiller):

  btmiller@hostname:~$ passwd
  Current Password: 
  New Password: 
  Reenter new Password: 
  passwd: Authentication token manipulation error
  passwd: password unchange

  The following appears in /var/log/auth.log:

  
  Mar 16 18:18:05 hostname passwd[20544]: pam_sss(passwd:chauthtok): Authentication failed for user btmiller: 10 (User not known to the underlying authentication module)
  Mar 16 18:18:10 hostname passwd[20544]: pam_sss(passwd:chauthtok): Password change failed for user btmiller: 10 (User not known to the underlying authentication module)

  It looks like PAM has been set up to call pam_sss for ALL password
  changes, regardless of whether the user is local or has been defined
  through sss.

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