@Element433 if I understand your question correctly, a MIDI controller can start automatically without a display being attached to the Pi. I built a custom MIDI controller to do just that but you could really use any MIDI controller.
Hey Jonas, I could mange to get 1 controller to be seen automatically but not 2. But as I said it’s solved. I think what might help here to avoid unnecessary work in the Pisound team having to answer what I see as a lot of post outlining the same issues is to have a fak page outlining known issues like this and solutions. For example, if you evoke the Pisound button once it will see the multiple controllers set up in the midiminder rules BUT if I double click to exit pure data and then in the same session click to evoke PD again you CANT connect to any controller unless you reboot.
Anyway as stated I’ve solved all the issues related to this and thank you for replying with your help. I would be interested in seeing your controller. All the best