We have experienced problems with the Stabilize and Dept-Hold modes on 8 thruster setup.
During operations we often get short periods with compass errors or deviating values from the IMU’s. The warnings have been discussed elsewhere in this forum (EKF2, AHRS, Yaw re-aligned, etc.).
Our problem is that when we get these warnings in Stabilize-mode the vehicle often reboots. We suspect that there is a bug in the Pixhawk firmware that crashes the program when the IMU errors gets to big. An acceptable solution would be to enter Manual-mode when such errors occur,
When we fly in Manual-mode we still get the same Warnings, but the vehicle never reboots.
For the record, QGroundcontrol and Pixhawk Firmware are latest version. All hardware are also latest version and we have tried replacing Pixhawk, Raspberry Pi, separated power supplies to electronics from the motor supply, and much more, without any luck.