I am trying to use SUN Spots with Ubuntu, but for some reason the SUN Spot Manager app is not seeing connected spot on USB port. Possibility that cdc_acm driver is not installed has been mentioned elsewhere, but I am complete beginner when it comes to Ubuntu, so I don't know where to find it or how to install it. Any input on this matter would be more than welcome. Addition: ls /dev/tty* returned the list that contains /dev/ttyACM0, but SUN spot is still not recognizing it.