Hello Steve, I see you are using a u-blox gps dongle. The usb port confilt is between the mount and the dongle. If your GPSD service is started, you must modify the /etc/default/gpsd file so that the GPS launches after the mount and on another port. The file should look like this START_DAEMON="false" GPSD_OPTIONS="-n" DEVICES="/dev/gps0" USBAUTO="false" Or DEVICES="/dev/ttyACM0" The mount takes the port /dev//tyyUSB0 and the GPS /dev/gps0 or /dev/ttyACM0 A very good day StéphaneRead More...