QGroundControl fails to open serial port

1

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.

image.png1920×1080 78.9 KB

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?

2

Did you solve this problem. I have the same problem when I try to connect pixhawk telem2 to qgroundcontrol, but I doesn’t have this problem when I try to connect with micro-usb port.