doesn't find USB Serial Port in Linux

[pkoevesdi]

On my Ubuntu System 20.04, it doesn't find the USB-Serial-Adapter, while Arduino IDE and VS Code have no problem finding and connecting to it.

[tomazas]

Are you sure you're running this app via sudo to have access to hardware ports?
What about sharing some logs not just a statement?

[pkoevesdi]

Yes, of course I also tried it with sudo. How can I get the logs?
Maybe it would be nice to give a serial port manually, i.e. /dev/ttyACM0?

[tomazas]

First, there should be some output (failure reason/text) printed in console after you run the "sudo java -jar ATCommandTester.jar" command and try to find (connect to) port.

[Vitaly-ORZH]

Hello thomaZas! I have the same trouble with COM port detection in Linux Mint. May be it can be write directly ? In some config file something like /dev/USB0

[Vitaly-ORZH]

Hello ! i had solve it ! It was trouble with driver CH340.