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The editor today takes you to understand the display manager in the Linux operating system and how to change it. The knowledge points in the article are introduced in great detail. Friends who feel helpful can browse the content of the article together with the editor, hoping to help more friends who want to solve this problem to find the answer to the problem. Follow the editor to learn more about the display manager in the Linux operating system and how to change it.

What is the display Manager in Linux?

To put it simply, the display manager display manager (DM) is a program that provides graphical login for your Linux distribution. It controls user sessions and manages user authentication. The display Manager will start the display server and load the desktop environment as soon as you enter your user name and password.

The display manager is usually synonymous with the login interface. After all, it's the visible part. However, the visible login screen, also known as the welcome page greeter, is only part of the display manager.

Like various desktop environments and display servers, there are a variety of display managers. Let's take a look at them.

Different display managers

Some people think that the display manager is part of the desktop environment, but this is not the case. It is an independent program.

A display manager may be recommended in a desktop environment, but that doesn't mean it can't work with some other display managers. If you have ever installed more than one desktop environment on the same system, you will remember that the login interface (display Manager) allows you to switch desktop environments.

Although the display manager is not part of the desktop environment itself, it is often developed by the same development team as the desktop environment. It also becomes a representative of the desktop environment.

For example, the GNOME desktop environment developed GDM (GNOME Display Manager), and just looking at the login interface makes you think of the GNOME desktop environment.

Some popular display managers are:

GDM (GNOME display Manager GNOME Display Manager): the first choice for GNOME.

SDDM (simple Desktop display Manager Simple Desktop Display Manager): KDE preferred.

LightDM: developed by Ubuntu for Unity desktops.

Display Manager can be customized

There are so many desktop environments to choose from, do they all have their own display managers? No, that's not true.

As I mentioned earlier, the visible login screen is called the welcome page. This welcome page can be customized to change the appearance of the login screen.

In fact, many distributions and / or desktop environments have created their own welcome pages to provide users with a login screen similar to their brand.

For example, Mint's Cinnamon desktop uses LightDM, but has its own welcome page to give it a more Mint (or I should say Cinnamon) look.

Take a look at Kali Linux's login interface:

If you like to code and adjust, you can modify or code your own welcome page according to your preferences.

Change display Manager

You can change the display Manager if you like. You need to install the display manager first. You will see the option to switch the display Manager during installation.

If the switch is not made at that time, the display manager can be changed later through manual configuration.

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