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My board is not the original Arduino board. When I had Ubuntu 16.04LTS, I didn't find this kind of problem with the same board, but now I encountered this. Is there a need to install USB to UART Bridge VCP Driver so that the serial port will show up or the problem is not connected with it(I tried to install it but permission was denied even when I tried it as a root user)
You probably need a CH340[G] driver – Greenonline – 2019-06-10T18:06:42.277
thanks, I will check it out – ProgB – 2019-06-11T05:03:42.830