When the user selects Command Line Login on the login screen, the login server temporarily terminates the X server, allowing access to the traditional command-line login running on the bitmap display terminal device. After the user has logged in and then out, or after a specified time-out, the login server will restart the X server.
The Command Line Login option is unavailable on network displays.
The display_type controls the behavior of Command Line Login. The format of display_type is:
When local@display_terminal_device is specified, the login server assumes that the X server and /dev/display_terminal_device are on the same physical device, and that a command line login (usually getty) is running on the device. When the user selects Command Line Login, the X server is terminated, allowing access to the running command-line login (getty) running on the /dev/display_terminal_device.
To disable the Command Line Login option on a display, specify none as the display_terminal_device. The default display_terminal_device is console. When local is specified, display_terminal_device defaults to console. When foreign is specified, Command Line Login is disabled.
The Command Line Login option will be disabled on the local display when the login server is started from the command line.