I have a build with an intermittent stabilization problem and am not sure what to try next.
Symptom: 80% of the time I've lifted off it rolls to the left and crashes.
I've done: yaw detection, level detection, six point calibration, full board reset and reinitialization, calibrate escs.
After the full board reset it was good for a flight until I had a "hard landing", after which it had the same stabilization problem.
After calibrate escs it was again good for a flight until I crashed again.
The visualization of the position looks steady and level.
One other clue: six point calibration only works when magnetometer is unchecked, otherwise it times out. I.e. it seems that the board might lack a magnetometer?