(Rare?) pre-arm failure: GPS 1 failing configuration checks

@flightzoomer wrote:

Hi,

While setting up my first Arduplane aircraft, I am encountering the following pre-arm failure:

Pre-arm Message:
PreArm: GPS 1 failing configuration checks

Followed by:
GPS 1: u-blox posllh rate configuration 0x3FE

All messages are these:
GPS 0: detected as u-blox at 115200 baud
GPS 1: u-blox posllh rate configuration 0x3FE
PreArm: GPS 1 failing configuration checks
PreArm: Compasses inconsistent
EKF2 IMU1 is using GPS
EKF2 IMU0 is using GPS
EKF2 IMU1 Origin Set
EKF2 IMU0 Origin Set
EKF2 IMU1 tilt alignment complete
EKF2 IMU0 tilt alignment complete
GPS alt: 38465
Init HOME
EKF2 IMU1 initial yaw alignment complete
EKF2 IMU0 initial yaw alignment complete
EK2: Changed EK2GPS_TYPE to 1_
GPS 0: detected as u-blox at 115200 baud
Airspeed sensor calibrated
Ready to fly
Airspeed calibration started
Barometer calibration complete
PX4v2 0043002C 30365115 31313731
PX4: c4dfb9bf NuttX: 258f2257
ArduPlane V3.7.1 (22b5c415)
Initialising APM
Calibrating barometer

The GPS seems to work. What might be the cause of this error and what would the next step to fix it? From checking Arduplane's code it seems to be failing to configure the NAV POSLLH messages properly. But why only these and not the others?

Thanks for your help!

Regards
Martin

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