hi, please have a look at my old post
http://forum.tinycorelinux.net/index.php/topic,15640.msg91652.html#msg91652in summary : The priorities for new X(Xorg server) configurations are like
/etc/X11/xorg.conf (if exist) "overides" /etc/X11/xorg.conf.d/*.conf files,
which they will "overide" /usr/[local]/share/X11/xorg.conf;d/*.conf
look under the hood to see what X did:
[ 16.024] (==) Log file: "/var/log/Xorg.0.log", Time: Wed Jul 17 00:10:18 2013
[ 16.027] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 16.027] (==) Using system config directory "/usr/local/share/X11/xorg.conf.d"
still there is some old info in wiki about Xorg input classes in Xorg.conf
Section "InputDevice" is ignored, now is "InputClass" for synaptics and keyboards when edev is used, which IS, by default.
Reading from
http://www.x.org/releases/current/doc/man/man5/xorg.conf.5.xhtml"If hotplugging (evdev) is enabled, InputDevice sections using the mouse, kbd and vmmouse driver will be ignored"the new X server 1.4 uses udev input device discovery and xorg.conf Section "InputClass" configuration.
Setting keyboard layout without hot-plugging (deprecated) has used Section "InputDevice"
The X server essentially treats the collection of configuration files /etc/X11/xorg.conf.d/*.conf as one big file, with entries from /etc/X11/xorg.conf at the end. sample 10-evdev.conf should be in the likely /etc/X11/xorg.conf.d directory, which manages the keyboard, the mouse, the touchpad and the touchscreen.