Port, board and/or hardware

DF Robot FireBeetle 2 ESP32-C6 V1.2

MicroPython version

MicroPython v1.26.1 on 2025-09-11; ESP32C6 module with ESP32C6
mpremote 1.26.1

Reproduction

1. Connect board to USB C port
2. Run mpremote in terminal

Expected behaviour

Expected to give a REPL prompt, respond to commands.

Observed behaviour

Ca 50% of the times the board gets connected, mpremote will output

Connected to MicroPython at /dev/cu.usbmodem101
Use Ctrl-] or Ctrl-x to exit this shell

But >>> never appears.

In this state, the pressing Ctrl-x or Ctrl-d have no effect. Pressing the reset button on the board will instantly throw an error message (ending in OSError: [Errno 6] Device not configured). Pressing Ctrl-] will dutifully terminate the program. Launching it again afterwards will exhibit the same behavior. Running mpremote ls in this state will similarly hang with no output.

Additional Information

I have observed this with multiple boards of the same model, running fresh installations of MicroPython (no additional software or boot scripts installed). This also occurred on the computers of my students (predominantly Apple machines).

I am unsure if this is possibly connected to #17865 (and #17960). I will try to see if an older version makes any difference.

Code of Conduct

Yes, I agree