Hi all I re installed jack and qjackctl. (Suse 10.2 default kernel) This did help a bit: when typing - - version, I now get: jackd version 0.109.2 tmpdir /dev/shm protocol 22 qjackctl still says it can't start jack. Desperate, I went to the command line, and to keep it short, I tried (not as root): jackd -d oss It seems that jack starts ! JACK compiled with System V SHM support. loading driver .. oss_driver: /dev/dsp : 0x10/2/48000 (4096) oss_driver: indevbuf 4096 B, outdevbuf 4096 B oss_driver: using barrier mode, (dual thread) Soundblaster live value. When I go back to qjackctl, and click start, it shows active, and is working, I looked like, I could connect things. I saw the virtual keyboard, and my soundcard, and for the first time, under connect, the audio tab was not empty, it now showed readable and writable clients. When I stop qjackctl, or press stop, it looks like Jack stops, but qjackctl still can't start it,. Is protocol 22 telling something ? What the peep, does -d oss ? I do not like to have to type this every time. ( The driver in qjackctl is set to oss. ) Guus