Hello everyone,
I have a pd patch that run before booting in the rc.local directory. the patch is starting nicely, but my raspberry doesnt recognize my korg nanokontrol2.
but when i start the script, which looks like this:

sleep 20;
pd-extended -nogui /home/pi/mypatch.pd &

manualy in the terminal, it works perfectly

As you see i already tried to let my raspi sleep before starting.

Any ideas?

Ps. i am new to this forum, tell me if you need more info or if the thread is at the wrong place.

thanks for helping

best
Nasthal

Maybe the whole MIDI thing doesn't work with rc.local because Pd is launched from the root user and not pi.
Try using crontab instead of rc.local. In Pi's terminal type:
crontab -e
The first time you edit crontab you'll be asked which editor you want to use, and you'll probably be prompted to use nano. Choose your editor and once you're in there, type this at the end of the file:
@reboot sleep 20 ; pd-extended -nogui /home/pi/mypatch.pd &