Allow root to login with GDM

Select this option to enable users with system administrator or root access privileges to use GDM to log in from a local system.

Systems that support Pluggable Authentication Modules (PAM) ignore this option. The PAM libraries determine whether the user is on the local system.

Allow root to login remotely with GDM

Select this option to enable users with system administrator or root access privileges to use GDM to log in from a remote system.

Allow remote timed logins

Select this option to enable GDM to log in a user automatically after an interval, from a remote system.

Show actions menu

Select this option to enable users to use the Actions menu on the login screen.

Allow configuration from the login screen

Select this option to enable users to use the Configure the login manager item from the Actions menu on the login screen.

Allow running XDMCP chooser from the login screen

Select this option to enable users to use the Run XDMCP chooser item from the Actions menu on the login screen.

The Run XDMCP chooser item displays a list of hosts that can offer display management services. Users can choose a host to manage a session from this list.

Always disallow TCP connections to X server (disables all remote connections)

Select this option if you do not want users to be able to connect to the X Window System server from remote systems. 

Retry delay (seconds)

Use the spin box to specify how long to wait after a failed login attempt, to reactivate the Username field on the login screen.

Systems that support Pluggable Authentication Modules (PAM) ignore this option.