Well enough to be dangerous. I was able to get the JACK Daemon running on my Lenovo Laptop running Fedora 32, and us it to record MIDI-based music.
The steps were relatively straight forward. First I had to shut off Pulse Audio.
systemctl --user stop pulseaudio.service systemctl --user stop pulseaudio.socket
The Rosegarden setup made sense to me, though it was a touch dated.
Specifically, the [>] referred to in that doc was no longer there, but the drop down had what I needed. I had to select the right audio device, which for me was HW:PCH
I went to QSynth and changed the Audio “Audio Driver: alsa” as well. And with that, I could record MIDI. Rosegarden automatically connected to the EWI. Switching between MIDI devices was done in QJackCtl’s graph dialog, just like I did before.
And, with everything set up this way, audio no longer worked for the video conferencing tools in my browser, so it is only temporary.
PulseAudio stops automatically nowadays when you start Jack. If you want to use PulseAudio-Software when running jack, that’s also possible:
Thanks Nils. You also told me this on a different channel:
“Fedora kernels can do RT scheduling, but PlanetCCRMA has kernels with the PREEMPT_RT patch which you can use to squeeze out that last bit of low latency. I don’t use the latter and latency is tolerable with our stock kernels on my HW (Focusrite Saffire Pro40), though I haven’t used it to monitor via the DAW in a long while (because of the HW matrix mixer in the interface). PlanetCCRMA is split into too repos, planetccrma for all the audio-specific stuff and planetcore for the kernel: http://ccrma.stanford.edu/planetccrma/mirror/fedora/linux/planetcore/32/x86_64/
Took me a moment to figure that out as well. ðŸ˜€
Their RT kernel is at 5.6.19 which is reasonably current.”
“I’ve only used stock Fedora kernels for some years, didn’t need better latency than that because I use the hardware matrix mixer for monitoring. Mind the stock kernel’s latency might or might not be sufficient for monitoring via the DAW, haven’t tried it”