We are using Navio2 together with a quadcopter. After initial setup and tuning, stabilize and position hold modes seem to work fine. However, when put into RTL the copter just hovers at the current position. When attempting to fly a mission loaded via APM Planner, the copter takes off to about half off the specified altitude, then starts declining. It never manages to really start navigating towards waypoints. At one time, it tried to speed up again but ended up flipping over and crashing.
Some recorded logs and more information can be seen in
We’ve tried changing a bunch of RTL settings and also tried restoring the default settings.