On Mon, Oct 24, 2016 at 08:45:24PM +0200, Alexandros Drymonitis wrote: > 20:34:37.681 /usr/bin/jackd -dalsa -r48000 -p1024 -n2 -Xraw -D -Chw:USB > -Phw:USB -i2 -o4 What happens if you leave out the -i2 and -o4 options? John