GDM is the
GNOME Display Manager, which provides a graphical login environment. After the transition from GNOME 2 to GNOME 3, configuring
GDM is only possible through
systemd as it no longer supports other init systems.
- the gdm package
The gdm package has replaced xorg-x11-xdm, which provided a legacy display login manager for the X Window System. As mentioned before, the gdm package provides the graphical login screen, shown shortly after boot up, log out, and when user-switching.
- GDM and logind
for defining and tracking users. For more information, see Chapter 2, logind
. System administrators can also set up automatic login manually in the GDM custom configuration file:
GDM configuration is now found in
/etc/gdm/custom.conf. However for backwards compatibility, if
/etc/gdm/gdm.conf is found it will be used instead of
custom.conf. When upgrading, Red Hat recommends removing your old
gdm.conf file and migrating any custom configuration to
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