I'm using pixracer and UART7 is system console serial port.
I'm trying to connect through this port in QGroundControl.
But, it shows this error message.
I can use nsh by screen and minicom through this port, but I don't know why I can't connect though this port in QGroundControl.
I also tried to execute QGroundControl as administrator. But QGroundControl doesn't permit to execute as adminstrator.
I also executed the following commands to fix this issues.
sudo usermod -a -G dialout $USER
sudo apt-get remove modemmanager
But, it also fails.
Does anyone can tell me what is problem?