Failsafe enabled no local position

PX4 Autopilot Multicopter 🛸
1

I am using v1.11.3-0.2.3 modalai voxl build of PX4 and a modalai flight core using a holybro m8 gps

I have done all calibration multiple times and it flies great in sabilized mode

however when I try to fly in position mode or use Takeoff flight mode, it throws the error Failsafe enabled no local position. It usually happens right after arming around 5 seconds. but sometimes mid flight

here is what i see on qgroundcontrol

image
image1294Ă—790 240 KB

here is the corrosponding error message i get on my logs
WARN [gps] Tracking satellite has disappeared from horizon for unknown reason–please check location! 194 66

Here is the link to my log
https://review.px4.io/plot_app?log=270f405a-88bd-4ba7-a4d2-a4eb3258e18d

2

I would try to contact ModalAI about this. It’s unlikely that someone here can help with an old PX4 version, first released in 2020.

I don’t see that warning in the log you shared…

3

https://review.px4.io/plot_app?log=270f405a-88bd-4ba7-a4d2-a4eb3258e18d
Here is the link to the log at the bottom

Are there any ways to determine the likely causes of that error being thrown? is there a way to trace the logs?

Thank you!

4

Oh, you are right. There it is. I have never seen this warning and I can’t find it in v1.11 source, so I think it must be a ModalAI extension?

My guess would be that satellites go out of view all the time, so this is completely normal.

5

Is there any way to determine the chain of events that causes the Failsafe enabled no local position failure occurring using the logs? This isn’t a firmware specific problem.