I’m mildly frustrated

Midisport Uno no longer working properly with OS X 10.11.4

I stopped recording MIDI for a few months and now when I started again the Uno will no longer work properly. It briefly worked properly, but then it would not transmit the notes I was playing, or it would slowly and randomly transmit notes I was playing to amusing effect. I'm using the setup I've always used.

I tried it with both my Korg M50 and my MicroKorg XL and it had the same problem, so I figure a) I need a new MIDI interface or b) I need a new driver (but it looks like no new ones have come out since 2009 and I gather from other topics that it doesn't need one.) What should I do?
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  • Corey S (Official Rep) April 18, 2016 13:53
    Hi Linden,

    Thanks for posting!

    The MIDIsport UNO should work fine with the MAC class-compliant MIDI drivers. If you're not getting a solid response, try resetting your MIDI Studio. Unplug all of your USB Audio/MIDI peripherals and follow this:

    http://community.m-audio.com/m-audio/...

    Plug the MIDIsport back in and test it with a MIDI Monitor:

    MIDI Monitor

    Open MIDI Monitor with all other programs closed. In the "Sources" section, check the boxes for your MIDIsports ports.
    Now MIDI Monitor will list all incoming MIDI Messages. This will help confirm if the controller itself is responding properly.


    As always make sure to try different USB ports. In particular, try to use USB 2.0 ports before USB 3.0. Even a USB 2.0 hub may help.

    Let me know how this goes!
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  • Sorry I haven't replied. I looked at my MIDI setup, everything seemed fine, I downloaded the MIDI monitor, everything seemed fine, then I tried using it, and everything was fine. I've used it a few times since. I didn't change anything, as far as I know. If it ever malfunctions again, I'll try your suggestions again.
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  • Had the same issue and unplugging/plugging back in the MIDIsport worked. Thinking I need a more stable USB hub.
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  • This reply was created from a merged topic originally titled no midi out with uno on mac.

    I purchased an M-Audio Uno to export a midi signal from my mac to a Rock Band Midi Pro Adapter. I am receiving Midi input from another device from my Alesis dm6 drum kit. I ran Midi monitor and confirmed i am receiving midi input. I used midipipe to create a pipe to the m-audio uno. the usb led lights up on the uno, but neither the midi in or midi out lights flash. the midi-pro adapter to which it is connected does not register any input either. midi monitor does not register any midi out signal. i am running osx 10.11.5. i have tried unplugging/replugging the device, restarting the computer and nothing has worked. help would be much appreciated.
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