I enabled it with: (type what comes after the $ character... not including the $)
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$ systemctl --user enable pipewire
$ systemctl --user enable pipewire-pulse
$ systemctl --user enable wireplumber
$ systemctl --user enable pipewire.socket
$ systemctl --user enable pipewire-pulse.socket
$ systemctl reboot
What follows was my original question.
Sound works in most distributions out of the box.
Output is from VGA cable connected to Prime H310M-C R2.0 motherboard... no graphics card connected.
Sound speakers connected to green plug on the motherboard.
Gnome paramaters sound show no output devices.
Test button shows test of (null).
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[paul@localhost Téléchargements]$ LANG=C aplay piano2.wav
aplay: main:831: audio open error: Host is down
[paul@localhost Téléchargements]$
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[paul@localhost ~]$ lang=C aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
pipewire
PipeWire Sound Server
default
Default ALSA Output (currently PipeWire Media Server)
sysdefault:CARD=PCH
HDA Intel PCH, ALC887-VD Analog
Default Audio Device
front:CARD=PCH,DEV=0
HDA Intel PCH, ALC887-VD Analog
Front output / input
surround21:CARD=PCH,DEV=0
HDA Intel PCH, ALC887-VD Analog
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
HDA Intel PCH, ALC887-VD Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
HDA Intel PCH, ALC887-VD Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
HDA Intel PCH, ALC887-VD Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
HDA Intel PCH, ALC887-VD Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
HDA Intel PCH, ALC887-VD Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
hdmi:CARD=PCH,DEV=0
HDA Intel PCH, HDMI 0
HDMI Audio Output
hdmi:CARD=PCH,DEV=1
HDA Intel PCH, HDMI 1
HDMI Audio Output
[paul@localhost ~]$
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[paul@localhost ~]$ LANG=C aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC887-VD Analog [ALC887-VD Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
[paul@localhost ~]$
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lspci -nnv shows among others:
00:1f.3 Audio device [0403]: Intel Corporation 200 Series PCH HD Audio [8086:a2f0]
DeviceName: Onboard - Sound
Subsystem: ASUSTeK Computer Inc. Device [1043:86c7]
Flags: bus master, fast devsel, latency 32, IRQ 129
Memory at f7120000 (64-bit, non-prefetchable) [size=16K]
Memory at f7100000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
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[paul@localhost ~]$ lsmod | grep -i snd
snd_hda_codec_hdmi 73728 1
snd_hda_codec_realtek 159744 1
snd_hda_codec_generic 98304 1 snd_hda_codec_realtek
ledtrig_audio 16384 1 snd_hda_codec_generic
snd_hda_intel 57344 1
snd_intel_dspcfg 28672 1 snd_hda_intel
snd_intel_sdw_acpi 20480 1 snd_intel_dspcfg
snd_hda_codec 176128 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
snd_hda_core 110592 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
snd_hwdep 16384 1 snd_hda_codec
snd_seq 86016 0
snd_seq_device 16384 1 snd_seq
snd_pcm 147456 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core
snd_timer 49152 2 snd_seq,snd_pcm
snd 114688 12 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm
soundcore 16384 1 snd
[paul@localhost ~]$