Regarding the Qjackctl suggestion. That thing is an abomination. I program jack directly rather than to use that abomination that never worked reliably for me. Nothing against you suggesting it. I just had underwhelming experience with it and
it is just too limited for my jack routings and I had to write my own interface jack connection scripts as qjackctl has no clue with the same interface and refuse to even connect given the correct string.
My script on the other hand works flawlessly and I can set up other jack necessities also which is not possible in the abomination.
Otherwise
It would be nice to have patchance working as it at least boots up compared to patchage which has been choking on a "font is too large" error for three releases of clean Debian(MX) installs.
So patchage is a dead end and the developer is not going to fix it.
Below a screenshot.
My midi selection is blanked out.
Midi is not routed through jack and i did not set up jack/alsa like that.
There seems to be an alsa/patchance midi problem.
It is weird as my standalone midi software can connect to midi hardware, so non jack midi is definitely working.
Alsa Midi is also not rerouted through jack as mentioned.
It seems that patchage might do something clever with Midi that patchance doesnt, maybe configures alsa files.
That is all I can think of.