The X server supports two configuration directories. The
/usr/share/X11/xorg.conf.d/ provides separate configuration files from vendors or third-party packages; changes to files in this directory may be overwritten by settings specified in the
/etc/X11/xorg.conf file. The
/etc/X11/xorg.conf.d/ directory stores user-specific configuration.
Files with the suffix
in configuration directories are parsed by the X server upon startup and are treated like part of the traditional
configuration file. These files may contain one or more sections; for a description of the options in a section and the general layout of the configuration file, see Section C.3.3, “The
or to the
man page. The X server essentially treats the collection of configuration files as one big file with entries from
at the end. Users are encouraged to put custom configuration into
and leave the directory for configuration snippets provided by the distribution.