On a HP Nx8220 (PG802) > cat /sys/bus/pnp/devices/*/id PNP0c01 PNP0a06 SMCf010 PNP0511 PNP0401 PNP0c04 PNP0200 PNP0800 PNP0b00 PNP0303 SYN010d SYN0100 SYN0002 PNP0f13 PNP0c02 PNP0c02 PNP0c14 PNP0c02 jani at cavia:~/hack/ubuntu/kernel$ lsmod |grep ir irtty_sir 7808 0 sir_dev 17324 1 irtty_sir irda 159804 2 irtty_sir,sir_dev crc_ccitt 2176 1 irda Jani