I can not select the port for programming.
My cable is also for data transmission and there is no problem.
There is no port to display on the Arduino.
Sorry don't know enough about Ubuntu, but Sparkfun have a guide which might help:
https://learn.sparkfun.com/tutorials/how-to-install-ch340-drivers/linux
Occasionally, the exact USB port/ using or not using a USB hub, may make a difference
I installed the driver but the problem was'nt solved.
I solved the problem like this: sudo apt remove brltty
If the problem is not solved, you can see the following link:
Thanks so much for updating us. I'm sure your response will help someone else in the future.
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