from FLRig, are you able to tune? when you press PTT does it key the radio?? If yes then you just need to set up your different digital protocols to interface with flrig and flrig will control the radio. But, if you are using a glonass gps dongle, you need to go into the gpsd file and change autostart from true to false then control x, y and, enter to exit and save.?
I had an issue in the beginning of my pi build, the gps dongle was creating a conflict and, it grabbed the usb port and would not release them.?
besides, the 705 has a built in gps, you don't need the dongle.
Deano