[gpsd-users] gpsd working with two PL2303 serial/USB interface

[Alain Tribaudot]

Hi GPSD users
I am using Ubuntu 16-04 on EEPC.
I get two adapters connected to my USB ports.
This is Actisense NMEA2000/NGW1 USB and BU353 GPS. Both are using the 
same driver PL2303 and gpsd recognize them at the first boot.
It works except when the computer goes to hibernation. When I wake it 
up, the ports are switching from ttyUSB0/ttyUSB1 to ttyUSB1 and nothing 
else, ttyUSB0 is dead.
The solution I found was to disconnect the device plugged on ttyUSB1 and 
replug it immediately. Then It comes back to ttyUSB0 but the divices are 
inverted.
The issue is that the actisense is sending back data like HDG, and XTE 
sentences to an automatic pilot, you can imagine the course of the boat 
without data.
I'd like to block this erratic behaviour but I did not find a solution 
to stop it.
I did not find a way to distinguish in /lib/udev/rules.d/60-gpsd.rules 
the interfaces because they are using the same chipset prolific.



# Prolific Technology, Inc. PL2303 Serial Port [linux module: pl2303]
# rule disabled in Debian as it matches too many other devices
ATTRS{idVendor}=="067b", ATTRS{idProduct}=="2303", SYMLINK+="gps%n", 
TAG+="systemd", ENV{SYSTEMD_WANTS}="address@hidden"

What can I do ?
Thanks in advance.
Regards
Alain