Comment 3 for bug 915386

This is from the ubuntu man page for sssd.conf

It doesnt look like access_provider = ldap is valid

permit, deny, simple are the only options

       access_provider (string)
           The access control provider used for the domain. There are two
           built-in access providers (in addition to any included in installed
           backends) Internal special providers are:

           "permit" always allow access.

           "deny" always deny access.

           "simple" access control based on access or deny lists. See sssd-
           simple(5) for more information on configuring the simple access
           module.

           Default: "permit"