CamillaDSP troubleshooting - no sound output (Fedora)

[concorde1]

After some minor troubleshooting (see https://www.audiosciencereview.com/forum/index.php?threads/multichannel-dsp-eq-on-linux.66660/ ), I got CamillaDSP and CamillaGUI online and connected.

What a nice interface! And can't wait to get this working fully!

I've copied my latest questions here and made a more suitable thread title - maybe someone can help.

I'm on Fedora Linux (42), with a Topping DM7, and 2 speakers + 2 subs.

Some questions:
- If I start camilladsp.service (I've just been using the executable), how do I pass these flags to it ( -s camilladsp/statefile.yml -w -p 1234 -o camilladsp/camilladsp.log ) ??

- One of mdsimon's camilladsp config for DAC's examples has 2in8out. But when I try that with a Mixer, I get an error in Pipeline. (Expected 8in.)
- I try 8in8out instead and just use the first 2in's
- But I get no sound output (nor sound shown in the GUI's meters)
- Would someone be kind enough to look at settings below and suggest why no sound?

(In meantime I will see if it's something strange like the outputs on Topping DM7 being labelled 7 to 0 instead of 0 to 7 , lol) -- tested this - this is not the situation!

In my Linux sound - "Loopback Analog Stereo" (playback) is getting signal, but "DM7 Pro" is not
I've tried the Loopback as output -> no sound to my speakers.
I've also tried "DM7 Pro" as sound output and (obviously) -> no sound to my speakers.

I've tried capture_samplerate = 44100 (with Resampling) -> did not fix

I've tried Playback Device = hw:Loopback,1,0 (as opposed to 0,1) -> did not fix

Thank you!

 

[concorde1]

An update on this -

Success!

I'm afraid I really don't know how this occurred, but after a system restart, with hw:Loopback,1,0 still set in the CamillaDSP config, another playback device appeared ("Alsa Loopback").

I tried this playback device and CamillaDSP is getting signal and I can hear it!

("Lookback Analog Stereo" is still there too but does not give sound.)

However, I would still like advice on this:

- If I start camilladsp.service (I've just been using the executable), how do I pass these flags to it ( -s camilladsp/statefile.yml -w -p 1234 -o camilladsp/camilladsp.log ) ??

Thanks

 

[concorde1]

Bump:

- If I start camilladsp.service with systemctl, how do I pass these flags to it ( -s camilladsp/statefile.yml -w -p 1234 -o camilladsp/camilladsp.log ) ??

I tried putting this line in the camilladsp.service file:
ExecStart=/usr/local/bin/camilladsp -s camilladsp/statefile.yml -w -p 1234 -o camilladsp/camilladsp.log /home/[myusername]/camilladsp/configs/Speakers_Subs.yml

But CamillaDSP won't go online

(I've instead been starting the executable manually in console for all these months, which works fine, but is less convenient.)

--

Second question . . . the camillagui.service file by default contains:

[Unit]
Description=CamillaDSP Backend and GUI
After=multi-user.target

[Service]
User=pi
Type=idle
ExecStart=/usr/bin/python3 /home/pi/camillagui-backend/main.py

[Install]
WantedBy=multi-user.target

This file seems obviously incorrect for my system. Should I modify it to be like the camilladsp.service file but with the camillagui target (ie ExecStart=...) , or is there a smarter thing to do here?

If you're wondering where I got these .service files, it's from https://github.com/HEnquist/camilladsp-config , which also has instructions for Fedora (which I run).

Thanks and excuse the beginner-ish questions.