udev

remap keyboard using hwdb

Create a configuration at /etc/udev/hwdb.d/xxx.hwdb:

• integrated keyboard of a laptop

evdev:atkbd:dmi:*
 KEYBOARD_KEY_01=capslock   # esc
 KEYBOARD_KEY_3a=esc        # capslock

• generic usb keyboard
  • v.... : vendor id
  • p.... : product id
  • KEY_... : hex scancode from evtest

evdev:input:b*v....p....e*-*
 KEYBOARD_KEY_...=capslock   # esc
 KEYBOARD_KEY_...=esc        # capslock

reload config

• systemd-hwdb update
• udevadm trigger