Logic Freezes Whenever E-Drums are Turned On

1. With the Alesis off, open Logic, get Logic all set up to record, open the List editor for that track. Record enable the track, hit record.

2. While Logic is recording turn on the Alesis wait a couple of seconds then hit a drum pad, then stop Logic.

Check the list editor and see what if anything is recorded when the Alesis it turned on.

Good troubleshooting in finding a work-around.

Could be a MIDI Loop problem.

With Logic open and the Alesis off, go to the upper left Logic Pro menu to Control Surfaces.

Next select Setup, what do you have listed in the right pane, it's possible something listed is causing the loop.

A bit of a long shot, but it's the first (and only) thing that came to mind.

Difficult to help if you don't know if your computer updated or not, folks who use Logic on a regular basis usually have automatic updates turned off. Between MacOS updates and Logic updates we're in a time of great instability. Many MIDI devices have exhibited problems.

Two things to try. Go the the upper Left, Logic Pro menu to Control surfaces, select Bypass All Control Surfaces. Quit Logic, restart the computer, test once again. If the same problem occurs go toy the Same menu and select Preferences, then "Reset All Preferences Except Key Commands. Note: this will undo any preference setting you have changed. You will need to reset your preferences,,,,, I/O buffer, Input/Output device....etc.

The xxx's are System Exclusive... for some reason the Alesis is sending out a System Exclusive dump when you turn it on.

Check the Alesis manual and see if it mentions anything related to System Exclusive.

I think your solution tapping a pad is easiest.However, you can make a further test that can be used on templates and projects. Under the "File" menu, select Project Settings/MIDI/Input filter, check System Exclusive.

Note: Project Settings are not global like Logic's preferences, they are saved with the project and/or template.

Interesting, it's not a MIDI loop but it is similar, a large amount of MIDI info which makes Logic freeze.

this from an online source:

Sysex, or ‘MIDI system exclusive messages’ are a MIDI message type designed to transmit information about specific functions inside a piece of MIDI hardware. In fact, sysex messages are up to the product manufacturer to define. This means that the set of sysex messages a piece of gear can receive is different for every make and model.

Well, that shoots my idea all to he**. Does Logic respond any differently if the Alesis is already on before starting Logic?

And you mentioned it worked fine previously and -nothing- has changed? Any software updates, did you update Logic or MacOS... anything at all?