After update from Arduplane 3.x to 4.09 the OSD does not work as previously.
It works OK and shows all data and horizon until I switch on my radio with Crossfire configured to Mavlink with RC control and connected to other telemetry port.
Then some of the data continues updating (such as Batt, Current, Mode etc) but some data not (such as horizon, pitch and roll angle)
When RC radio is off and Crossfire telemetry does not work then OSD is OK.
It happened right after update, so the problem is in latest firmware. Playing with SRx parameters did not help
Is this an internal EMC (electromagnetic compatibility) problem? Is the telemetry transmitter interfering with the IMU on the flight computer? If that is the case than turning the transmit power down or moving the transmit antenna might fix your problem.
And Update for the issue.
I see the same issue on my second plane. It has Crossfire receiver configured Mavlink and Telemetry Radio Modem. When RC Radio is on then Mission Planner connects to plane via telemetry radio modem very slowly. When I switch RC Radio off then it starts reading parameters fast (as usually).
So two telemetry ports are not working OK at the same time.
Don’t think so, the same plane was OK with Arduplane 3.x
And I have the same issue with my second and third plane. The planes are totally different. Pixhawk and Matek 405 Wing. with/without telemetry radio.