CommPortIdentifier.getPortIdentifiers with zero ports on Linux

Question

i am trying to connect serial port on ubuntu. However, It doesn\'t work for me. I succesfully run the same project on Windows just with different drivers. The problem is tha

Answer 1

I used this command

sudo chmod 666 /dev/ttyUSB0

I had the same problem and it worked the moment after I used this command. Like Smolda said, it is a permission problem.