Started by an init Script
Some Linux distributions use startup scripts to execute the display manager. For
example, on a SUSE system, the display manager is started by /etc/rc.d/rc5.d/S17xdm
(which is a symbolic link to /etc/rc.d/xdm).
Similar to the prefdm script used by Fedora, this script finds your preferred display
manager using a configuration file??”in this case, /etc/sysconfig/displaymanager??”or it
uses XDM if that file is missing.
Since this is a regular init script, it is executed only once at startup; when the display
manager terminates, it will not be restarted. After editing the display manager configuration
file, you can reinvoke the XDM init script using the restart option to put your
changes into effect:
# /etc/X11/xdm restart
Or you can use the SUSE shortcut:
# rcxdm restart
2.7 Starting Multiple X Servers Using a Display
Manager
On a home computer, it can be useful to configure the display manager to start two
or more X servers. You can then flip between them using the virtual terminal mechanism
(Section 2.2).
A few years ago, I used this configuration on my home computer, so that when I
wasn??™t using it, other members of my family could change VTs and log in without
disturbing my work.
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