How to Start a Display Manager

B

A display manager is a graphical interface that is responsible for providing login and session management on a Linux system. It is typically the first thing that users see when they start up their system.

There are several display managers available for Linux, including GDM (GNOME Display Manager), LightDM (Lightweight Display Manager), SDDM (Simple Desktop Display Manager), and XDM (X Display Manager). However, regardless of the display manager used, it is typically started in one of the following ways:

D. It is started automatically when an X11 user logs in to the system console.

When a user logs into the system console on a Linux system, the display manager is usually started automatically. The display manager will then present the user with a graphical login prompt, allowing them to enter their username and password to log in.

B. It is started like any other system service by the init system.

On most Linux systems, the display manager is started like any other system service by the init system. This means that the display manager is started automatically during system boot-up, and is managed by the init system thereafter. The exact mechanism for starting and managing the display manager may vary depending on the Linux distribution and init system in use.

A. It is started by a user using the command startx.

In some cases, a user may start the display manager manually using the command startx. This is typically done when the user is already logged in to the command-line interface, and wishes to start a graphical session.

C. It is started by inetd when a remote host connects to the X11 port.

In rare cases, the display manager may be started by inetd when a remote host connects to the X11 port. This is typically only used in very specific situations, and is not the default behavior on most Linux systems.