Make sure the Controller is connected directly to the USB port on the Mac.

If your USB MIDI Controller is not working on a Mac please check the following: This has now been found on a number of different MIDI Devices including Impulse, SL MkII, Launchpad S, Launchkey, etc. This causes odd behaviour, such as Devices not being available for use in programs, missing ports, Automap Buttons not working or connecting. this video is a good exhibit for the case.We have seen a small number of users with various Class Compliant USB MIDI Devices have an issue using Mac OS where the MIDI Devices do not appear properly to the computer. I can only imagine the amount of Roli Blocks and Soundgrid problems, which occurredĭue to the effects of phased deprecations. The guy in the video is having the same problem, but with a driver for his waves soundgrid. but this video explained that this was probably my specific issue. but the strategy is to not really mention anything about any of it. So I’d think that if this is true and apple already know it, then apple tend to manage these deprecations of driver bit depth support, in an incremental and phased fashion.

in the case of the BT Midi, it simply won't work untill the 2X2 driver was taken out of its enclosing folder and moved somewhere else.

I think it’s because, if Bluetooth Midi needs to work at 64bit into the core Midi system, then a 32bit Midi driver may force the USB subsystem, to pull down to 32bit. in my case on high sierra, the 32bit Midi driver of the 2X2, was hobbling another unit needing to run on the core Midi system, using Mac OS’s 64bit Bluetooth Midi driver.Īfter looking into it a little, it seems 64bit Bluetooth Midi drivers can’t live alongside a 32bit Midi driver.

it runs right into a serial MTP AV and I was only using the one port in any case. I had to switch out my 2X2 for a Roland UM ONE MKII.

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