For the record here... Jasem found the problem. This file was missing: /lib/udev/rules.d/60-gpsd.rules Recreating the file with this in it fixed the problem: SUBSYSTEM=="tty", ATTRS{idVendor}=="1546", MODE="0666", SYMLINK+="gps", TAG+="systemd", ENV{SYSTEMD_WANTS}="gpsdctl@%k.service"Read More...