menuconfig-uring my kernel in order to have embedded and not modular support for those modules solves part of my problems trc0 is present and hwclock perfectly working. /sys/class/leds/ directory is fully and rightly populated The only problem remaining is that about the aspected leds behaviour. I don't see them flashing on disk activity, also having echo-ed 1 into each disk green/brightness. Is this correct ? Andrea