Line6 Helix Jack/ no audio

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Audio pitch being altered when launching certain applications

Welcome! It’s caused by combination of some audio cards and difference in programs sample rate, if you experience such a problem - i strongly suggest you should route all your audio through jack Common terms buffer under-or-overrun, X stands for under or over. It’s a sign that your system did not process some buffers in time, so some data is missed. It is particularly true when you run at very low buffer size where the sound card should process incoming buffers very fast (over…

Here are steps to get you properly started with jack - try to follow, i think it should work fine