Regardless of how we configured the Pixhawk, we could not get the GNSS V2 to send a GPS stream. We had no problems getting the original GNSS to communicate with the same Pixhawk, so we know the latter is fine.
NMEA stream over Putty showed all zeros for the coordinates.
Direct connect to QGIS resulted in no data.
We can get Status activity on the GNSS, sometimes CAN1 activity, and virtually never PPS (even if we take the unit outside).
We have been trying for 2 days now to get the unit to work without success. We were thinking a reflashing of the firmware might be just what it needs.