(In reply to Jonas del Campo from comment #2) > Tested also with latest kernel 5.13.4-1-default, same result. > > However I've noticed that I can type the LUKS password with an external USB > keyboard. Could that mean that the internal keyboard relies on some > module/driver? I couldn't find anything obvious with lsmod. It looks like this, indeed. On-board keyboard seems to be on USB2, but you likely connected the external keyboard on USB3 port, right? I think there is a power supply or a gpio missing. Could you share the output of 'lsmod', please?