Garbage NMEA output from GPS

[wibble]

Has anybody succeeded to gen nmea data by gpsd from modem?
For me --location-get works (more or less) but gpsd has nothing. I have it attached to ttyUSB1. Is it right?
Others available are:
USB: ttyUSB0  ttyUSB1  ttyUSB2  ttyUSB3
Serial: ttyS0  ttyS2  ttyS3

ttyUSB1 is correct for nmea output, and ttyUSB2 for enabling gps with AT+QGPS=1 and any configuration you care to do. I haven't tried gpsd on mobian, but I think it worked in PmOS. You can check it with picocom or similar.