I see the same issue. I am using plain LDAP rather than AD. I tried changing the “Internal Username” setting to cn and clicking on the “Clear Username LDAP Mapping” button. However, while this improves the situation, it isn’t quite right. To test this I created a user with the uid testuser. Their first name is “Test” and last name “User”. When i use cn instead of a random string of numbers and letters as the user name shown in the users list I get Test_User instead of testuser.
I can however log in to the account using the correct username testuser.
Can anyone suggest the correct thing to put here so it actually shows the correct username in the list of users?
I am resurrecting the old post as it is better to keep the information in one place