On Thu, Sep 18, 2014 at 08:29:26PM +0200, Raffaele Morelli wrote: > On 18/09/14 at 11:09am, Steve Litt wrote: > > I really want to use Jack, but every time I've tried, I > > failed miserably and gotten no sound. Is there some > > special mindset you need when installing/configuring > > Jack, and if so, where can I find out about it? > > Well, it's quite straightforward to use jackd and no > particular trick is needed. Install jackd2 and its gui > qjackctl and alsa-utils. Get rid or stop PulseAudio and > start qjackctl, see what happens and report (qjackctl has > a nice message log window)
Getting rid of pulseaudio is the most reliable way to start. qjackctl looks nice, but I've always just started jackd manually, and used jack_lsp to show me the connections. I start jackd like this: jackd -d alsa -d hw:0,0 -r 44100 -H & And you need some test program that you know outputs to the soundcard (system:playback under JACK). e.g. ecasound -i test.wav -o jack,system > Keep in mind that often no sound means that alsamixer > volumes are muted or at 0 level which seems to be the > default. This! Use the arrow keys and 'M' key to toggle muting. Also you need to hit the 'SPACE' key to set CAPTURE for each input. Use the TAB key in alsamixer to make sure you reach all the I/O choices. > > My understanding of Jack (and please correct me if I'm > > wrong), is that it's like being able to patchcord > > together all sorts of software sound processor boxes, in > > whatever configuration I want. I'd *love* to be able to > > do that. > > Yes, jack compliant applications can be routed from/to > every where. Non compliant apps can also be routed with > little tweaking (eg. flashplayer, skype) Look at the JACK docs for details. # The following may be useful with pulse audio # although TBH, I never got them to work. # pactl load-module module-jack-sink channels=2; # pactl load-module module-jack-source channels=2; # pacmd set-default-sink jack_out Cheers, Joel -- Joel Roth -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20140918200823.GB13194@sprite
