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What needs to be done so that when a specific input device is plugged in via USB it is not automatically used for input by X? I still want the /dev/input/* device nodes automatically created, but don't want X to use them.

My xorg.conf currently only has sections for "Screen", "Monitor", "Display", "ServerLayout", and "Device" for my video card. There are no sections for input.

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up vote 7 down vote accepted

Input devices are now managed in /usr/share/X11/xorg.conf.d/ (in 10.04 Lucid, the directory is /usr/lib/X11/xorg.conf.d/).

This directory contains configuration rules for all your input devices:

root@3000-G530:/usr/share/X11/xorg.conf.d# ls
10-evdev.conf      50-vmmouse.conf  51-synaptics-quirks.conf
50-synaptics.conf  50-wacom.conf    60-magictrackpad.conf
  • You fist need to find your input device there, note that those files are "rules" matching a number of possible devices. 50-wacom.conf for example will handle every wacom device. Look throgh them to find which one is responsible for your device, or create your own.

To disable a device:

  • Add the option Option "Ignore" "true" to the relevant configuration file.

    Open the file with root privileges (i.e. press Alt+F2 and type gksu gedit) and add this option to the others.

Log out and back in for the changes to take effect.

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