jm wrote: > Try > > jackd -S -d alsa -r 44100 & > > the -S says don't try 32 and 24 bit, only 16 bit. appearantly your > card only supports 16 bit, the '&' sends it to the background. > > > > Thank for the many ansawers I've received. Anyway, that still doesn't work. I've typed jackd -S -d alsa -r 44100 & but the prompt don't come back there's always a problem (xrun ...don't know what it's meaning) and when I try the jack metronome , jack_metro --bpm 120 &, the answer is : [moebius@localhost moebius]$ jack_metro --bpm 120 & [1] 2307 cannot connect to jack server [moebius@localhost moebius]$ cannot connect to default JACK server jack server not running? [1]+ Exit 1 jack_metro --bpm 120 [moebius@localhost moebius]$ jack_connect metro:120_bpm alsa_pcm:playback_1 cannot connect to jack server cannot connect to default JACK server jack server not running? Well, if someone has another(s) idea(s) .... cordialement,