[Stephen H]

Was able to get serial port monitor working on Ubuntu 22.04.

1. remove brltty package, it’s for console braille communications.
   sudo apt remove brltty
   sudo apt autoclean && sudo apt autoremove
2. disable modemmanager package, I used the instructions on this page
   https://askubuntu.com/questions/216114/how-can-i-remove-modem-manager-from-boot

Both of these hijack the communications for the usb ports, so you’re unable to see them.

The serial monitor settings are “Newline” and 57600 baud.

Hope this helps.

[Author]

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