Fast login via ssh / Slow login via login manager with machine in AD-domain
 

Dear board,

This is my first post. Thanks for this forum.

I just put together a linux (Debian 8) machine that I joined successfully to an Active Directory domain. Everything works fine so far, I can login with domain accounts and everything becomes mounted well.

Now I wonder why when ssh'ing to the machine, login with domain accounts and machine-local accounts is quite fast ... but when login in in front of the computer using LightDM the login process is a bit slow (both for domain and local users).

After typing a (correct) username, tabbing to the password field takes, well, 20 seconds or so. During that time, LightDM seems a bit frozen (although the mouse pointer can be moved and I can switch to a console by CTRL+ALT+F-key).

I had a look in the PAM-configuration but everything seems ok. Do you have any hints? /var/log/auth.log shows no problems IMHO.

Thanks a lot in advance for any answer.

Greetings from Germany
Benjamin

Dear board,

I just disabled user- and group-enumeration in my smb.conf. That solved the problem, login via login manager now is quite fast, too.

But why is "graphical login" affected by that enumeration-option, but not login via ssh?

Best greetings
Benjamin

Dear board,

As mentioned above, the problem is solved (though another question arose (ssh vs. gui-login)).
Shall I mark this as solved and open a new topic?

Thanks and best greetings
Benjamin