Hello to all!
I am relatively new to Linux, I am a former Mac user, with some "hobbyist level" experience with music production (basic knowledge of Garageband).
I am now experimenting with audio production under Linux.
I am on an HP EliteBook 840 G7, with Linux Mint 20.3.
Following the steps described in this tutorial I managed to install a low latency kernel, then I have installed JACK, and Qsynth. Everything seems to work fine if I use Qsynth and pulseaudio: I use the vmpk simple virtual keyboard, and I have good output sound.
I have also tested JACK, as suggested in the tutorial using
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$ jack-play test.wav
and I hear the right clean output.
However, when I tell Qsynth to use JACK, I have noise. Specifically, when I hit a key in vmpk I have "white noise" for few milliseconds, and only when it fades I have a little bit of the note that I was supposed to play.
I have the same "white noise" problem if I use Rose Garden.
I have tried to change the sample rate and the frames/period settings, with many combinations, and also the Timeout, in JACK, but the problem stays the same.
Thank you in advance for any help you can give!
Fabio