Just double checking here. The log messages below show the cable connecting, and then disconnecting. Had you disconnected the cable again before running dmesg, or did the cable fail?

Tom Henderson

On 2/16/20 11:56 PM, Kheong Sann CHAN wrote:

The tty port is found when I plug it in:

$ dmesg | grep tty
[ 7527.188154] usb 1-2: pl2303 converter now attached to ttyUSB0
[ 7548.490452] pl2303 ttyUSB0: pl2303 converter now disconnected from ttyUSB0