Looking at the MIDI window of the Audio MIDI Setup (which, by the way, is an application located in a “Utilities” folder within the “Applications” folder; an alias might also be in your dock), you might notice that the MIDI interface is a lighter shade than normal. This means that the mac knows that it was once there but today its not sensing its presence.
Closer observation of the MIDI I/O in the machine room shows that its power light is on but the ‘online’ light is off.
Here’s what I normally do in this scenario.
- Hold down the “Panic/Reset” button on the MIDI I/O until the “online” light illuminates. You will also see a light show from the other LEDs on the box. This announces the unit restart.
- Hit the “Rescan MIDI” button in the Audio MIDI Setup app. If the unit still doesn’t fully appear, then try step three
- Find the USB cable connecting the MIDI I/O to the computer. Unplug it, then plug it back in. This jolts the computer into rescanning its USB port. This normally solves the problem. If not, tell Jeff all about it.