This is on a HP Pavilion dv1000 ... not sure what driver (if any) is used: $ cat /sys/bus/pnp/devices/*/id PNP0c02 PNP0200 INT0800 PNP0103 PNP0c04 PNP0c02 PNP0b00 PNP0303 SYN0110 SYN0100 SYN0002 PNP0f13 PNP0c14 -- burningbed