While attemting to install alsa1.0.18a on a system based on Linux2.6.24, I am stuck with: alsa-kernel/core/hrtimer.c:29: error: implicit declaration of function ‘hrtimer_forward_now’ This function was introduced with kernel 2.6.25 - which also happens to be the first kernel where RT-patches breaks for midi. Anybody has got an idea for a workaround?