Logic keeps losing controller assignments???

Question

I have an Axiom 49 with it's transport buttons assigned to various logic functions. I have assigned these in the key command section by "learn new assignment" Every so often these commands stop working altogether as if Logic "forgets" them. When I look at the learned command line it still shows the assignment but it isn't until I "relearn" the exact same assignment that it works again. This is extremely frustrating. Does anyone know why this happens and if there is a workaround? Thanks.

Answer 1

don'tforgetyourtowel wrote:
This may work for your controller assignment issues. I haven't tried that specifically but it definitely works for solving problems with midi ports changing depending on what you have hooked up when you boot Logic.
The CA (Controller Assignments) are "Pre", regarding the Logic Physical Input in Click & Ports layer, so this will not solve the "Input Floating Ports" problem I guess... I think a little tip using IAC bus can work cause once IAC is activated it is a MAC constant virtual port.
*The IAC Tip*
1. Cut the "Sum" cable from the Physical Input and cable the IAC (Bus1) port to the Monitor object (1) - see the pic below. You can name the Monitor (IAC Bus1 IN) etc.
2. Cable all physical ports to the "Sum Physical Ports" Monitor object (2).
3. Create an Instrument object (3), assign its port to IAC, set its midi channel to "All" and cable from "Sum Physical Ports" Monitor object (2).
4. Create a new Fader in the Environment and cable it to the IAC Instrument as shown (4).
5. Move the fader of your external controller you plan to learn to see what is its CC# and channel# in the "Sum Physical Ports" Monitor. (You can skip this step if you are familiar with the physical fader/knob hardware CC assignment previously).
6. Select the virtual fader (4) labeled as "Temp Learn" in the environment and set its output CC definition number and midi channel to match your external controller you plan to learn in the inspector.
7. Save your new midi setup as a Logic template song.
8. Press (Command+K) to open the Logic CA expert dialog. Do the standard "learn" procedure to learn any channel strip or plugin parameter but instead of moving the external controller fader/knob you must move the virtual environment fader labeled as "Temp Learn" (4). This way Logic CA will be learned from the IAC bus (you will see that in the CA expert dialog). After this "Dummy" learn process you can tweak the physical controller - done!
The method must solve the "Input Floating Ports" problem cause all CA assignments will be learned from the IAC port which is constant (non-floating until you may decide to switch it OFF in the Mac AMS).
The other good side is if you decide to move your Logic Preference file ( i.e CA) to another machine - all assignments must work this way ( I did not try yet but in theory it must work ).
Another advantage is that you can patch lots of interesting "Transformer Gears" between the "Sum Physical Ports" Monitor (2) and the Instrument IAC port (3). In other words you can use the Logic Environment as an advanced "MIDI JUNCTION" engine serving its midi processing to other apps, CA etc...
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