Arturial Mini Lab confirmed. (Firmware > 2.0)
This is a wonder!!!! Cause the Mini Lab never runs under Linux. Due to a poor legacy MIDI implementation of the Mini Lab.
Addendum: I was wondering after uploading the patch and disconnecting the connection to the core, I can't play the Mini Lab anymore. So my idea was, the USB of the PC powerd the board, cause the LED are running fine. With the live mode the Mini Lab runs fine.
But no MIDI commes in. A reference test with a sequencer, the core runs in this setup fine.
The patcher shows 4,93V which should be also OK.
Now I changed to a 2A USB loader (pluged in at the MicroUsb). And suddenly everything works fine.
My first Idea: This must have something to do with the driver!
No! But what's the difference of a live patcher connected USB Midi and a disconnected patcherUSB Midi?
It must have something to the with current drawn by the keyboard in the startup phase when everything comes up. This is the main difference between the "live" mode and the standalone mode I think. In live mode the keyboard ist initialized long before the patch is running.
@johannes johannes wrote:
Power input through the micro-usb port is current limited to 1A average.
Power output on the USB host port is current limited to 0.5A average.
The red LED lights up when detecting overcurrent on the USB host port.
If it drops to below 4.5V when plugging in your USB device without
external power supply, I advise to use an external power supply.
For the Mini Lab it looks like, we have this situation only in the standalone mode. But this could not be visualised.
So it looks like Arturia Mini Lab needs a external powerd Axo to run in standalone mode.
It's a known issue of the MiniLab, that this keyboard ist, let's say - a little bit tricky.....