Linux Audio DevelopmentI update the Linux Support Request Tracking regularly, see https://linuxaudio.dev/linux-support-request-tracking.
Which vendors from the "to be contacted" section should I contact next?
Ivan@linuxaudiodevelopment Arturia! They have keyboard hardware that can control the synth. If we can have that, it will be a game changer.
@visionalfreeman I contacted them a couple of times already and they (unfortunately) have only responded generically so far. I will continue to ask them for support, though.