#modprobe uhci_hcd #modprobe pl2303 #modprobe irda #echo 9600 > /proc/sys/net/irda/max_baud_rate #modprobe irtty-sir #modprobe ma600-sir #modprobe ircomm-tty #irattach /dev/ttyUSB0 -d ma600 -s dongle works! -- linux-image-2.6.15-23-686 freezes when using irda https://launchpad.net/bugs/45542