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Earlier I was using the [not ugly] old styled login screen. Recently have installed lightdm greeter to change my login box position from left to center.

Now, I have to configure lightdm to disable guest-login and enable manual-login in lightdm.

I have tried many tutors and steps on google but nothing change happened.

some tutor is saying to edit file ni */etc/lightdm/** and some in /usr/share/lightdm/*

the files of these folders are as...

/etc/lightdm/

 - lightdm-gtk-greeter.conf [shortcut link]
 - lightdm-gtk-greeter-ubuntu.conf
 - users.conf
   /usr/share/lightdm/lightdm.conf.d/

     - 50-greeter-wrapper.conf
     - 50-guest-wrapper.conf
     - 50-ubuntu.conf
     - 50-unity-greeter.conf
     - 50-xserver-command.conf
     - 60-lightdm-gtk-greeter.conf

I have tried making changes to all the files listed here but nothing special happened.

Also, tell me how to check for greeter-session, whether it is unity or gtk or whatever.

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I have found answer to my problem and hope it will also serve best to the others who need it.

It's so simple. Just make some changes to .conf file and its done.

I had to make changes to two .conf files in order to get what I want.

1. Disable Guest Login

In Ubuntu 14.04 the .conf file to be edited has been moved to /usr/share/lightdm/lightdm.conf.d from /etc/lightdm/

run these commands :

sudo gedit /usr/share/lightdm/lightdm.conf.d/50-unity-greeter.conf

add line :

allow-guest=false

2. Enable Manual login

since, in versions earlier than 14.04 .conf file is located in /etc/lightdm/ directory which has been moved to /usr/share/lightdm/lidhtdm.conf.d/ , we need to create a lightdm.conf file in /etc/lightdm directory

run this command :

sudo gedit /etc/lightdm/lightdm.conf

add lines :

[SeatDefaults]
greeter-show-manual-login=true
greeter-hide-users=true

Thats it.... Now, restart your pc and see the change.

Screenshot... Login Screen

[A full totorial is here : Customise Login Screen NetPuppet]

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