https://indilib.org/support/tutorials/157-persistent-serial-port-mapping.html

Commands:
Dmesg -shows device status, unplug and replug to get info
Lsusb shows usb devices
Cgps shows gps info
Geany -text editor


Note ID:
Bus 003 Device 059: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) IC

    1) Find ttyusbX

Tty:
ls /dev/ttyUSB*    -maybe change the *?

Or
dmesg | grep tty

dmesg






    2) Find the serial ID:
udevadm info -a -n /dev/ttyUSB0 | grep '{serial}' | head -n1
In my case, I got the following:
ATTRS{serial}=="A8YNLO6X"

U-Blox AG= 1546:01a7
When working: /dev/ttyACM0 


    3) Create a udev rule file (use above info):
/lib/udev/rules.d/

Name must be before other rules:
“1-gps.rules”

Rule:
# U-Blox symbolic link of the driver to a customized one
KERNEL=="ttyACM[0-9]*", SUBSYSTEM=="tty", ATTRS{idVendor}=="1546", ATTRS{idProduct}=="01a7", SYMLINK="ttyGPS"




    4) Change GPSsd file. /etc/default/gpsd
Edit devices= to “/dev/ttyGPS” if you made a udev rule. 
(maybe try changing auto to false, and  ttyACM0 , and changing the ACM# until it works as configured?)


default:
# Start the gpsd daemon automatically at boot time
START_DAEMON="true"

# Use USB hotplugging to add new USB devices automatically to the daemon
USBAUTO="true"

# Devices gpsd should collect to at boot time.
# They need to be read/writeable, either by user gpsd or the group dialout.
DEVICES=""

# Other options you want to pass to gpsd
GPSD_OPTIONS=""

New:
# Start the gpsd daemon automatically at boot time
START_DAEMON="true"

# Use USB hotplugging to add new USB devices automatically to the daemon
USBAUTO="true"

# Devices gpsd should collect to at boot time.
# They need to be read/writeable, either by user gpsd or the group dialout.
DEVICES="/dev/ttyGPS"

# Other options you want to pass to gpsd
GPSD_OPTIONS=""