linuxOS_AP05/debian/test/usr/share/help/C/lightdm/index.page
2025-09-26 09:40:02 +08:00

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<page xmlns="http://projectmallard.org/1.0/"
type="guide"
id="index">
<info>
<credit type="author">
<name>Robert Ancell</name>
<email>robert.ancell@gmail.com</email>
</credit>
<include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
</info>
<title>LightDM Help</title>
<p>
LightDM is a <em>Display Manager</em>.
It is a long running process (daemon) that ensures that your graphical display is set up correctly.
</p>
<p>
The LightDM daemon spawns and manages two types of processes:
</p>
<list>
<item>
<p>
Display Servers - a process that combines graphical output from one or more process together to display on graphics hardware.
Also provides input from mice / keyboards etc to the process. For example X is a display server.
</p>
</item>
<item>
<p>
Sessions - a session is a process that has access to the display server and allows the user to perform tasks.
Often a session will be made up of a core component, the shell, that allows the user to run applications.
Both the shell and the applications communicate with the display server.
</p>
</item>
</list>
<section id="display-management" style="2column">
<title>LightDM for Display Management</title>
</section>
<section id="authentication" style="2column">
<title>Authentication</title>
<p>
Authentication is performed using PAM.
</p>
</section>
<section id="greeters" style="2column">
<title>Greeters</title>
<p>
A greeter is a session that provides a mechanism for choosing and authentication users.
</p>
</section>
<section id="sessions" style="2column">
<title>User Sessions</title>
<p>
A user session allows a user to interact with their computer and run applications.
</p>
</section>
<section id="remote-access" style="2column">
<title>Remote Access</title>
<p>
You can allow remote computers to connect to LightDM and start sessions.
</p>
</section>
</page>