User fields cannot be updated

Hello team,

after many hours of research and already some LDAP implementations, I can not find a solution to my problem. Everything works fine, SSO, search specific attributes of the user email, address, zip code, date of birth. .... The mapping of my users member of an OU to a role working perfectly.

My problem is to update the contents of the user, for example, an update of address, name or first name. As the user information retrieved well as Drupal can not update the information in the LDAP database. The DN user has sufficient rights for the operation works correctly from the same client server from the command ldapmodify.

After several attempts, I found a message in the log :

Notice : Undefined index: pass in user_validate_current_pass() (ligne 1231 dans /var/www/modules/user/user.module).

And I have this error:

ldap_read() function error. LDAP Error: Invalid DN syntax, ldap_read() parameters:

as explained, everything seems to work correctly. Quota, personal info, everything is recovered but the update does not work. For information, I deactivated the ability to update the password ....

Frontend : Debian Wheezy, FastCGI, LDAPClient.
Drupal 7.41 + LDAP module version 7.x-2.0-beta8
Backend : LDAP Linux Schema Active Directory.

Login and rôle attribution is work.
View LDAP query attribute in profile is work.
LDAP query is work:

    query_numeric_id = 1
    qid = DemoLDAP
    name = LDAPGroupsDemoUsers
    sid = DemoCloudAuth
    status = 1
    base_dn_str = DC=Demo-cloud,DC=org
    filter = (&(|(objectclass=person))(|(|(memberof=CN=DemoFreeConfirmed,CN=Groups,DC=Demo-cloud,DC=org)(primaryGroupID=1110))))
    attributes_str = samaccountname,givenname,sn,displayname,mail,description,thumbnailPhoto
    sizelimit = 0
    timelimit = 0
    deref = 0
    scope = 3

LDAP Query Results: count=7 DN	sn	givenname	displayname	samaccountname	mail	description
CN=Sophie Demo,CN=Users,DC=Demo-cloud,DC=org	Demo	Sophie	Sophie Demo	sophie.demo	sophie.demo@Demo-cloud.org	4 GB

I have 10 fields to be updated and for the password, I have another solution. I tried activating the password field but that seems to change anything. I deleted every time the tests of drupal account to have a clean and initial status for the user.

Finally, I tried with two simple text fields, I have the same result. Someone would have a track to solve my problem?

I search for any similar problem but I did not find very convincing related log I get.
I apologize for my English, I still helps me a translator because it is not yet perfect.

Thank you for your support,