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Chapter 5. GDM
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
GDMnow useslogindfor 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:/etc/gdm/custom.conf.- custom.conf
- GDM configuration is now found in
/etc/gdm/custom.conf. However for backwards compatibility, if/etc/gdm/gdm.confis found it will be used instead ofcustom.conf. When upgrading, Red Hat recommends removing your oldgdm.conffile and migrating any custom configuration tocustom.conf.
Getting More Information
For more information on
GDM, see Section 14.1, “What Is GDM?”.
For information on configuring and managing user sessions, see Section 14.3, “User Sessions”.
For information on customizing the login screen appearance, see Section 10.4, “Customizing the Login Screen”.
