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Having problems with MIDI in recording on Ubuntu

rated 0 times [ 0] [ 0] / answers: 1 / hits: 907 / 3 Years ago, sat, august 14, 2021, 5:01:59

I have a Yamaha P-120 model with a USB to MIDI interface that looks like this.

I've decided to use LMMS because it seems like the easiest MIDI sequencer available. I'm having a lot of difficulties getting this to work.

What I am trying to do: Record input from my keyboard onto LMMS

What is working: I can get my output to work, so I can control my keyboard via my computer.

What is not working: My computer isn't reading the input from the keyboard. I can't record any songs.

What have I tried: A lot.

Ports/Any other Information

Port     Client name                       Port name

14:0     Midi Through                      Midi Through Port-0

24:0     USB Midi                          USB Midi MIDI 1

128:1     LMMS                              Default preset

128:2     LMMS                              Default preset

128:4     LMMS                              Default preset

129:0     Client-129                        qjackctl

Let me know if you need anything else to help. I am really trying hard to fix this problem as I would love to use my MIDI keyboard.

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edseager

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2 Years ago

answered 3 Years ago alkeake · Accepted Answer

The MIDI command bytes for Clock, Stop, and Active Sensing are F8, FC, and FE.
In binary, this would be 11111000, 11111100, and 11111110.

The MIDI protocol has no synchronization or error correction; this looks like noise on the MIDI data line, i.e., there is no actual MIDI signal.

Reasons for this could be:

the MIDI input cable is broken;

the keyboard's MIDI output is broken; or

the "HOST SELECT" switch is not set to "MIDI".