Serial port not working linux

15.06.2018 Daniell
To connect a Linux terminal to the serial port of your Linux system, you can use a command-line screen manager tool called screen. How can I find the serial port, so I can interface my old Terminal Node Controller with minicom. I have a laptop which has only one serial port.
Serial port not working linux
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Any suggestions would be very appreciated since this keeps me from using the serial monitor. I remember the serial port working just fine on CentOS with the same system. How do I check and configure serial ports under Linux for various purposes such as modem, connecting null modems or connect a dumb terminal. Trouble connecting to composite USB serial port. I have attached a loop-back on my serial port to check if data is actually transmitted and received.