Hi! I noticed the following line in dmesg output: ALSA ../alsa-kernel/ppc/keywest.c:79: tumbler: cannot initialize the MCS Can somebody tell what's the problem here? Well, sound seems to work - kind of. After unmuting the master with amixer I can listen to some music. But I'm not able to control the volume of the sound. Regardless of the mixer settings the sound has always the same loudness. Martin