JArduino's Serial4JArduino GUI does not list the usb port in Linux OS

[swapnill93]

JARDUINO's GUI fails to list the actual usb port at which the arduino is connected - which is the /dev/ttyacm0

I added my username permission to the port and the arduino is working fine with arduino GUI.
What is causing the issue of non appearance of the actual usb port in Ubuntu?
How can I fix the issue?