Autologin does not work with encrypted home folder.

Check available sessions at /usr/share/xsessions/


sudo gedit /etc/lightdm/lightdm.conf
14.04 LTS - /etc/lightdm/lightdm.conf.d/20-lubuntu.conf
[SeatDefaults]
autologin-user=<YOUR USER>
autologin-user-timeout=0
user-session=ubuntu
greeter-session=unity-greeter


Ubuntu MATE
/usr/share/lightdm/lightdm.conf.d/60-lightdm-gtk-greeter.conf
[Seat:*]
greeter-session=lightdm-gtk-greeter
autologin-user=student

# # #

Guest autologin
Edit /etc/lightdm/lightdm.conf with your favourite editor gksu gedit /etc/lightdm/lightdm.conf and under the section [SeatDefaults] add
allow-guest=true
autologin-guest=true
autologin-user-timeout=0
autologin-session=lightdm-autologin
user-session=ubuntu
....
user-session=Lubuntu


For Ubuntu 14.04 create the file: /etc/lightdm/lightdm.conf.d/12-autologin.conf
and add:
[SeatDefaults]
autologin-user=youruser

# # #

Disable user at logon screen
sudo gedit /etc/lightdm/users.conf
hidden-users=nobody nobody4 noaccess username

replace "username" with appropriate one


Disable all users at logon screen
sudo gedit /etc/lightdm/lightdm.conf
14.04 LTS - /etc/lightdm/lightdm.conf.d/20-lubuntu.conf
[SeatDefaults]
greeter-show-manual-login=true
greeter-hide-users=true
allow-guest=false


# # #

Disable guest account

LightDM:
sudo gedit /etc/lightdm/lightdm.conf
14.04 LTS - /etc/lightdm/lightdm.conf.d/20-lubuntu.conf
muuda sektsiooni:
[SeatDefaults]
greeter-session=unity-greeter
user-session=ubuntu
allow-guest=false
sudo restart lightdm #restart display manager

GDM - sudo apt-get remove gdm-guest-session

---

Check default display manager

/etc/X11/default-display-manager (Debian etc)
/etc/sysconfig/desktop (RedHat etc)
/etc/sysconfig/displaymanager (OpenSUSE)

# # #

Enable numlock
sudo apt-get update && sudo apt-get -y install numlockx && sudo apt-get clean
nano /etc/rc.local
 .....
 /usr/bin/numlockx on
 .....
 exit 0