# ubuntu 10.04
It's based on acpid, acpi-support. while some hotkeys pressed, acpi events are triggered then some handlers be called according to the events respectively.
/etc/acpi contains scripts for handler, /etc/acpi/events contains the events definition. Now it targets on turn off monitor power because it has to modify some codes in my laptop. Fn+F1 is the hotkey to turn off monitor power.