In these days I'm trying to play my guitar through my audio interface using guitarix and JACK and they work just fine. The issue arrives when I also want to play spotify or youtube in the meantime. I'm trying to route Pulseaudio to jack executing these scripts after the startup on qjackctl:

pactl load-module module-jack-source;pactl load-module module-jack-sink

The connection works, but then the sound that I get from my speaker is just terrible, full of glitches and strange noises, it just isn't usable.

Am I doing something wrong? Should I tweak something? Is this setup usable for you?

  • if you only want audio playback from Pulseaudio and don't need to capture connection, just use 'pactl load-module module-jack-sink' – nik gnomic May 22 '18 at 14:16
  • are you just loading Guitarix, which is starting JACK ? suggest you use QjackCtl to start JACK and monitor the server. Suspect your settings for samplerate, buffer size and periods/buffer are set too low and is causing errors in audio stream (x-runs). if qjackctl confirms there are many x-run errors, increased buffer settings will stop this, but might increase audio delay through JACK – nik gnomic May 22 '18 at 14:40

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