On Fri, 2025-08-22 at 02:00 +0000, Worik via Pd-list wrote:
Friends
I am using version 0.53.1 in this case (from Debian-12 archives) so apologies in advance if my problem is not apparent in more recent versions
I am using pd to implement guitar effects (https://github.com/worikgh/120Pedal.git)
To that end I want to start a pd process in the background and headless. I manage Jack audio pipes programmatically (it is how I switch between pedals in real time) and I do not connect directly to system:playback_1 as I have a volume control between my effects and playback
To this end I wish to start a pd process that creates jack I/O for itself but does not connect them to the system input and outputs
Jack, uhm.. I mean: Check 'pd -help'. Here is the relevant section:
-jack -- use JACK audio API -jackname <name> -- a name for your JACK client -nojackconnect -- do not automatically connect pd to the JACK graph -jackconnect -- automatically connect pd to the JACK graph
pd -nojackconnect
should do what you want.
Because I had similar needs, I once created the jackpatch external available in Deken. It lists JACK clients and creates/deletes connections between them. Maybe it is useful to your setup.
Roman