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Zynaddsubfx fails to initialize with error message "Default I/O did not initialize."

rated 0 times [ 1] [ 0] / answers: 1 / hits: 3877 / 2 Years ago, tue, november 15, 2022, 12:05:22

I am tying to use zynaddsubfx with qjackctl and MIDI. I have it connected, and the configurations are set. This is what I see when I open zynaddsubfx:

Default I/O did not initialize. Defaulting to NULL backend.

What does this mean and how do I fix this?

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percol

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3 Years ago

answered 1 Year ago clegian · Accepted Answer

I got this problem fixed by working with jack. Once I got jackctl set up, the problem disappeared. One of the biggest helps I found with qjackctl is this one here Ubuntu wiki How to JACK Configuration.

I think this had to do with the Frames/Period. Basically this is the buffer for qjackctl as explained on the wiki. Working with the settings on this and a few other settings helped tremendously.