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Old 07-15-2019, 10:24 AM   #1
Ral-Clan
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Default MIDI in under ALSA + M-Audio card doesn't work (Linux)

There appears to be a bug in the Linux version or Reaper, whereby MIDI-in on some M-Audio does not function when ALSA is selected as the Audio System in Preferences/Audio/Device. MIDI-out and audio does work, but MIDI in from an external keyboard connected to the sound-card's MIDI-IN port fails to register.

This has been confirmed with the following models: M-Audio 2496 and M-Audio Audiophile 192 sound cards with built in MIDI interfaces.

A work-around is to set the audio system to "JACK" under "Preferences/Audio/Device/Audio System" and specify the following launch command under "Auto-Start jackd":

/usr/bin/jackd -P80 -dalsa -dhw:<soundcard name>,0 -r44100 -p64 -n2 -Xseq

See thread here discussing this here:
https://forum.cockos.com/showthread....64#post2158164

My specs:
Lubuntu 16.04.6LTS
Reaper version 5.980 (Linux X86_64)
M-Audio audiophile 192 soundcard

Last edited by Ral-Clan; 07-15-2019 at 10:29 AM.
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Old 12-11-2019, 10:31 AM   #2
Celphor
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Same here when I connect a M-Audio Oxygene. ALSA receives MIDI, i can confirm it using the ALSA command line tools. But in Reaper it does not receive any data. No error on opening the device, but no data input. It seems to connect the input because checking with the command line tools tells me the device is already connected. Of course the track is armed, I know Reaper for years.
I have no other USB keyboard to cross check at the moment
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