Having difficult time in understanding wireplumber/pipewire/pulseaudio interplay and setup parameters . I have used Linux since 1999 RedHat 6.0 . However, I am having a difficult time wrapping my arms around the audio changes with Wireplumber/pipewire /pulsaudio .
System is Dell 7530 running Fedora 35, Xeon processor, 32 GB RAM, last update was yesterday
Basically, I understand that there is a program which actually decodes the music, it interfaces with some sort of manager .
Here is a dialog
systemctl --user status wireplumber
● wireplumber.service - Multimedia Service Session Manager
Loaded: loaded (/usr/lib/systemd/user/wireplumber.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2022-01-07 11:24:31 CST; 2h 49min ago
Main PID: 2024 (wireplumber)
Tasks: 4 (limit: 38259)
Jan 07 11:24:31 rhino systemd: Started Multimedia Service Session Manager.
Jan 07 11:24:56 rhino wireplumber: GetManagedObjects() failed: org.freedesktop.DBus.Error.NoReply
I do not understand the getmanaged objects-
[david4@rhino ~]$ aplay -l
aplay: device_list:274: no soundcards found…
[david4@rhino ~]$ aplay -L
Discard all samples (playback) or generate zero samples (capture)
PipeWire Sound Server
PulseAudio Sound Server
Default ALSA Output (currently PulseAudio Sound Server)
The system only shows “dummy” output device . I feel there is a disconnect between some modules , but do not understand the framework which is necessary . Any insight you could offer would be greatly appreciated .