USB Midi devices aren't seen after upgrade to 10.11

Question

Level 1

4 points

USB Midi devices aren't seen after upgrade to 10.11

I have a Mac Mini and an iMac and two USB Midi adapters, an Eiderol (Roland) UA-20 and a Hosatech UM-422. Both worked fine on both machines prior to the upgrade. I tried reinstalling the UA=20 driver but that had no effect. The Hosatech adapter has no driver. The only thing I see in the logs regarding the UA-20 is this message "EDIROL UA-20@14300000: AppleUSBDevice::waitForInterfacesGated: timeout waiting for _interfacesMatched" .

I get these messages when plugging in the Hosatech adapter:

Oct 1 14:30:57 crawdad kernel[0]: 003954.476008 IOUSBHostDevice@14400000: IOUSBHostDevice::getDescriptorGated: type 0x01 index 0 length 18 completed with 0x00000000 and bytesTransferred 0

Oct 1 14:30:57 crawdad kernel[0]: 003954.476029 IOUSBHostDevice@14400000: IOUSBHostDevice::start: failed to get device descriptor

Oct 1 14:30:57 crawdad kernel[0]: 003954.476286 PRT4@14400000: AppleUSBXHCIPort::resetAndCreateDevice: failed to start device

Oct 1 14:30:57 crawdad kernel[0]: 003954.476316 PRT4@14400000: AppleUSBXHCIPort::resetAndCreateDevice: failed to create device (0xe00002e9), disabling port

IMAC (RETINA 5K, 27-INCH, MID 2015), OS X El Capitan (10.11), Mac mini

Posted on Oct 1, 2015 2:45 PM

Reply

Answer 1

Best reply

hembreed Author

Level 1

4 points

Oct 5, 2015 12:25 AM in response to hembreed

I bought a thunderbolt midi interface, ResidentAudio T2, and that works great. It's way to expensive a solution but I needed it now. Thanks again Apple. You're very fortunate your main competittor is Microsoft.

Reply

Answer 2

elbenoit

Level 1

24 points

Oct 16, 2015 1:04 PM in response to hembreed

If you read through Garage Band and Logic forums you will see there are multiple complaints about MIDI and El Capitan.

Since it seems to be almost universally broken, hopefully it is something Apple will fix in a point release.

I recommend filing a bug report to Apple regarding this problem. Hopefully the more reports they receive, the more likely this issue will get a higher priority for a fix...

https://www.apple.com/feedback/macosx.html

Reply

Answer 3

elbenoit

Level 1

24 points

Oct 19, 2015 6:43 PM in response to elbenoit

I was able to get up and running again by installing yosemite on an external disk and then re-downloading garage band.

I installed the 10.3.9 MBOX 2 driver but the device was not recognized.

I then had to manually delete the 10.3.9 drivers and install 10.3.3 MBOX 2 driver.

From there the MBOX lit up and is once again recognized by the system and is visible in the System Preference..

Thank you for your courage.

Reply