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  • 1
    the USB device here is the USB chip on the NodeMcu board, not the esp8266, Commented May 6, 2022 at 13:04
  • 3
    You may tail -f /var/log/syslog right before plugging in the board, and see if anything interesting shows up. Commented May 6, 2022 at 13:56
  • 4
    sudo dmesg -w will show you what's going on. Maybe it's shutting down the port because it's drawing too much current? Commented May 6, 2022 at 14:30
  • I have edited the post with result of the command. Commented May 13, 2022 at 5:55
  • From these logs, it looks like the brltty daemon tried to mess with the serial port. Can you disable this daemon and try again? Commented May 13, 2022 at 7:33