Haven’t made it happen yet. Mint 19.1 on an ASUS Sabertooth 990FX w/ 32GB. Up to now the only audio on here has been from the media player – some *.flac files – and concert music on Youtube.
I know linux well and have background in audio synthesis (long ago) and 20 years in software engineering. JACK is evidently present on my machine; qjackctl runs, but doesn’t find anything to connect to, in or out. The audio hardware is just whatever’s on the motherboard.
I’ve made small changes to the initial VCV-Rack patch, and observed their consequences on the scope (added an LFO to provide gates to the ADSR, noodled with the a.d.s.r. parameters to confirm they work the same way they did forty years ago, and so on).
I tried installing the skjack plugin. But nothing came of that – I couldn’t confirm it had even been downloaded – didn’t find any evidence in ~/res or in ~/.Rack.
you need to fix jack/qjackctl and make it connect with your audio system, which i’m assuming is alsa. if you have pulseaudio running as well, disable it, since it is unlikely to add anything useful and is just another point of failure. jack can do a much better job, in combination with alsa.
Alsa is there alright, but so is pulseaudio, and it won’t quit. I considered deleting it altogether, but synaptic told me that would get rid of cinnamon as well. Cinnamon is my desktop manager; I’m not quite ready to abandon that. (Well, I will if I have to but I’m not quite there yet.)
I tried just killing the pulseaudio process, but in less than three seconds it restarted. I’m hazy on the systemd logistics for managing processes – I guess I’ll take a look at that tomorrow.
Of course, if Mint has integrated pulseaudio into its own audio infrastructure, there may be effectively nothing I can do about this situation. In that event I’d happily install something in one of my VirtualBox machines just for the experience… .
Anybody else got any advice? I’ll report tomorrow on any progress I make.
There’s no need to disable or uninstall pulseaudio, you’re just setting yourself up for more problems later on if you do that. Make sure you have the pulseaudio jack module installed and it should bridge to jack automatically.
it was running when I took the screenshot. I had actually succeeded in connecting an input to an output port. I got some sound out of my speakers, but it turned out to be a feedback loop. Nothing to do with the sequence of audio events I had set up on vcv. One momentary jolt of adrenalin followed by a moment of severe depression… .
I keep staring at the empty “mix” socket on the VCV mixer module, where the audio output is probably happening. Should I be fiddling with “alsamixer” as well as qjackctl? I fooled around with that earlier today, trying to make something happen.
Looks like there are a few issues that can be sorted with that. Linuxaudio wiki also has loads of tips, you need to edit the limits.conf. Don’t worry too much about the kernel, install the lowlatency kernel if you can but not the end of the world if not.
Is is rack definitely set to output to jack? I’ve seen some people choose jack in Audio and not realise that there is a secondary selection.
Otherwise, yes check alsamixer. It is common that it is muted by default. Look for any that have mm under the fader.
Yeah, I fooled around with amixer/alsamixer a few days back. Just enough to raise/lower mute/unmute a few channels, and file the whole business away for attention later, after I’ve started to actually hear things from my loudspeakers.