[linux-audio-user] My Edirol UA-20 arrived, but now I have a big problem!

Hallo, my Edirol UA-20 USB audio device has arrived, and I also got it to work: It was almost plug and play. But now I have a serious problem, and that is noise when moving the mouse. I'm at loss what to do. Everytime I move the pointer with mouse or touchpad on my Acer Travelmade, the UA-20 produces nasty screetching, crackling and scratching. This doesn't happen, when I unplug the power supply. The UA-20 gets its power from the USB-port, so I suspect that this creates the conflicts. Does anyone have an idea how to get rid of this noise? Or should I send back the USB device? Thanks for any help... ciao -- Frank Barknecht _ ______footils.org__