I think this idea about the "system" only have 2 output channels is a good intuitive guess, only because it resonates with something I was supposing. Still not sure why or how thats the case it would impact it, nor how to change it.

However, ass FFWs post below displays, they are successful getting it to work on Debian.

@FFW said:

It works out of the box on Debian sid but with jack checked not portaudio

I was able to achieve this also, but the issue with jack is that it is not displaying bluetooth output devices.
Jack cannot support Bluetooth and it seems bluetooth headphone support is handled exclusively by PulseAudio (not even ALSA). How can I view a bluetooth output in jack so I can send these outputs independently to seperate devices?

thanks for confirming that jack supports the multiple inputs. I must have missed something... any idea why it wont work with pipewire? I am happy to use jack so long as I can get access to the bluetooth output.

I am trying to get the four channels available from puredata into the Jack audio server. I have selected 4 channels in the audio output settings.

For some reason, Jack only appears with 2. Anyone know why this is the case and how I might go about getting the other two channels appear? I am trying to achieve this so I can send audio from puredata to different speakers in a bluetooth syste (two seperate bluetooth modules, with a stereo channels).

The same thing happens with pipewire- only two channels are available in the virtual audio stream. Ive also attached photos for both of these audio servers. Help would be greatly appreciated.

The channels DO appear in pulseaudio however, and I have included pictures of this

Thanks for your help. Below photos demonstrating some of the settings. I am running linux mint

pd media settings

the four channels setup to go to ALSA: jack

there are only two channels appearing in Jack from puredata, not four

however, the channels do appear in pulseaudio volume control

but also does not appear in pipewire

Solved:

Run the following in terminal to install libglfw3

sudo apt install libglfw3

Hi

I am running linux mint. I installed pure data via terminal.

I installed Gem from the pure data 'deken - Find externals' window. The version is 0.94-snapshop, uploader iembot, Date 2024-11-30 17:07:39.

Placing the [declare -lib Gem] object appears successful as it appears the about text in the console window (i.e., version number, author, homepage etc.)

However,
After placing a gemwin object, I receive the following red text in the console.

/home/sonny/Documents/Pd/externals/Gem/gemglfw3window.pd_linux:libglfw.so.3: cannot open shared object file: No such file or directory
/home/sonny/Documents/Pd/externals/Gem/gemglfw3window.pd_linux:libglfw.so.3: cannot open shared object file: No such file or directory
gemglfw3window
... couldn't create