Not recording ulog file in OFFBOARD mode

Pixhawk
1

When I fly the drone in OFFBOARD mode, flight data is not recorded in SD card of Pixhawk 4. I use PX4 Autopilot ver 1.15. How to fix this issue?

2

Is there no ulog file at all? Or are you looking for specific flight data?

3

Pixhawk recorded ulog when drone fly in manual mode or stabilize mode, but there is no ulog in OFFBOARD mode

4

That’s odd. It usually always records a ulog when armed. Was it armed?