I see there is no support to Fn key on few laptops. I want to develop a driver to include Fn key and contribute to opensource. I am using SONY VAIO laptop running ubuntu 12.03(kernel version: 3.0.51). Question no 1: How do i find keyboard source code for my laptop(SONY VAIO VPCEG25N)? I see there is 4 entires in source code for keyboard.c : a. drivers/input/keyboard/spear-keyboard.c<http://lxr.linux.no/linux+*/drivers/input/keyboard/spear-keyboard.c> b. drivers/s390/char/keyboard.c<http://lxr.linux.no/linux+*/drivers/s390/char/keyboard.c> c. drivers/tty/vt/keyboard.c<http://lxr.linux.no/linux+*/drivers/tty/vt/keyboard.c> d. kernel/debug/kdb/kdb_keyboard.c<http://lxr.linux.no/linux+*/kernel/debug/kdb/kdb_keyboard.c> Question no 2: Is it possible to tap scancode of Fn key using the source code? Thanks and I respect your time. Regards Prakash S