Ok, I use PulseAudio
I recently try the loopback(clue post) function of Pulseaudio (I wanted output sound both in Bluethooth and internal card)
Pulseaudio-control (pavucontrol) just give me a “dummy” as output (thanks)
If i understood well sound-card driver is kernel loaded
So, it’s works or its not. I do a try to :
sudo pacman -S sof-firmware
whoami :
inxi -SA ✔ 3.2.1
> System:
Host: FrameworkPC Kernel: 6.1.44-1-MANJARO arch: x86_64 bits: 64
Desktop: Xfce v: 4.18.1 Distro: Manjaro Linux
Audio:
Device-1: Intel Alder Lake PCH-P High Definition Audio driver: N/A
Server-1: PulseAudio v: 16.1 status: active
Some outputs :
pacmd dump ✔ 3.2.1
### Configuration dump generated at Tue Aug 29 11:40:12 2023
load-module module-device-restore
load-module module-stream-restore
load-module module-card-restore
load-module module-augment-properties
load-module module-switch-on-port-available
load-module module-udev-detect
load-module module-bluetooth-policy
load-module module-bluetooth-discover
load-module module-bluez5-discover
load-module module-dbus-protocol
load-module module-native-protocol-unix
load-module module-gsettings
load-module module-default-device-restore
load-module module-always-sink
load-module module-null-sink sink_name=auto_null sink_properties='device.description="Sortie factice"'
load-module module-intended-roles
load-module module-suspend-on-idle
load-module module-console-kit
load-module module-systemd-login
load-module module-position-event-sounds
load-module module-role-cork
load-module module-filter-heuristics
load-module module-filter-apply
load-module module-cli-protocol-unix
load-module module-loopback latency_msec=1
set-sink-volume auto_null 0x10000
set-sink-mute auto_null no
suspend-sink auto_null no
set-source-volume auto_null.monitor 0x10000
set-source-mute auto_null.monitor no
suspend-source auto_null.monitor no
set-default-sink auto_null
set-default-source auto_null.monitor
### EOF
auto null monitor confirmed here
pacmd list-sinks | grep -e 'name:' -e 'index:'
> * index: 0
name: <auto_null>
So I try :
pactl unload-module module-loopback
Reboot…
Nothing, other outputs :
aplay -l
> aplay: device_list:277: aucune carte son n'a été trouvée...
= No sound card found
sudo dmesg | grep snd
> ø
sudo fuser -v /dev/snd/*
> zsh: no matches found: /dev/snd/*
lspci | grep [Aa]udio && lsusb | grep [Aa]udio
> 00:1f.3 Audio device: Intel Corporation Alder Lake PCH-P High Definition Audio Controller (rev 01)
systemctl --user list-unit-files | grep -E 'pulse|wire' | awk '{ print $1,"-", $2 }'
> pipewire-media-session.service - enabled
pipewire-session-manager.service - alias
pipewire.service - disabled
pulseaudio-bluetooth-autoconnect.service - disabled
pulseaudio-x11.service - static
pulseaudio.service - disabled
pipewire.socket - enabled
pulseaudio.socket - enabled
I dont know what pipewire is doing here…
systemctl --user -l --no-pager status pulseaudio.{socket,service} pipewire.{socket,service}
> Alls are "active"
Maybe audio not have in pulse group clue
cat /etc/group | grep audio
> audio:x:996
I search/try a lot forums.
Here am back home 
tell me if you have a clue for me
Thanks