Osuggestions?? tia, jackc...

Translates to hdmi:0,[0,1,2,3,4]

Previously you showed the following output. This shows device as card
and device as device

> aplay -lv
> **** List of PLAYBACK Hardware Devices ****
> card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
> Subdevices: 1/1
> Subdevice #0: subdevice #0
> card 0: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
> Subdevices: 0/1
> Subdevice #0: subdevice #0
> card 0: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
> Subdevices: 1/1
> Subdevice #0: subdevice #0
> card 0: NVidia [HDA NVidia], device 9: HDMI 3 [HDMI 3]
> Subdevices: 1/1
> Subdevice #0: subdevice #0
> card 0: NVidia [HDA NVidia], device 10: HDMI 4 [HDMI 4]
> Subdevices: 1/1
> Subdevice #0: subdevice #0

Translates to hdmi:0,[3,7,8,9,10]

This is different than the above output. WHat did you do in the
interim? With the newer output, hdmi:0,1 should work, because alsa has
now found it.

i have made no file updates, just started populating /etc/pipewire from /usr/share/doc/sound/pipewire

i have ...

.config/pipewire/media-session.d/default-routes
.config/pipewire/media-session.d/media-session.conf
.config/pipewire/media-session.d/bluez-monitor.conf
.config/pipewire/pipewire.conf

> my .config/pipewire/media-session.d/default-routes has,...
>
> *{ "default.route.alsa_card.pci-0000_03_00.1:profile:off": [ ],
> "default.route.alsa_card.pci-0000_03_00.1:profile:output:hdmi-stereo-extra1":
> [ ]}*
>
> *should i have hdmi:0,2 as default route??*

If the output from aplay -lv or aplay -L* still shows that hdmi:0,0 is
legitimate, I think that is what you should be using. I am not sure how
to translate that into pipewire speak. I'm not even sure that the above
is looking at the nvidia card as the pci in the name is confusing.
What do you see if you do lsmod? How about lspci? Is the hdmi card
in either of them?

i see ...

aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
samplerate
Rate Converter Plugin Using Samplerate Library
pipewire
PipeWire Sound Server
upmix
Plugin for channel upmix (4,6,8)
vdownmix
Plugin for channel downmix (stereo) with a simple spacialization
default
Default ALSA Output (currently PipeWire Media Server)
hdmi:CARD=NVidia,DEV=0
HDA NVidia, HDMI 0
HDMI Audio Output
hdmi:CARD=NVidia,DEV=1
HDA NVidia, HDMI 1
HDMI Audio Output
hdmi:CARD=NVidia,DEV=2
HDA NVidia, HDMI 2
HDMI Audio Output
hdmi:CARD=NVidia,DEV=3
HDA NVidia, HDMI 3
HDMI Audio Output
hdmi:CARD=NVidia,DEV=4
HDA NVidia, HDMI 4
HDMI Audio Output
usbstream:CARD=NVidia
HDA NVidia
USB Stream Output
[jackc@ws ~ $ aplay -lv
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 9: HDMI 3 [HDMI 3]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 10: HDMI 4 [HDMI 4]
Subdevices: 1/1
Subdevice #0: subdevice #0

snd 110592 10 snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_timer,snd_pcm
snd_hda_codec 172032 2 snd_hda_codec_hdmi,snd_hda_intel
snd_hda_codec_hdmi 73728 1
snd_hda_core 110592 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_hda_intel 57344 1
snd_hrtimer 16384 0
snd_hwdep 16384 1 snd_hda_codec
snd_intel_dspcfg 28672 1 snd_hda_intel
snd_intel_sdw_acpi 20480 1 snd_intel_dspcfg
snd_pcm 135168 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core
snd_seq 90112 1 snd_seq_dummy
snd_seq_device 16384 1 snd_seq
snd_seq_dummy 16384 0
snd_timer 49152 3 snd_seq,snd_hrtimer,snd_pcm
soundcore 16384 1 snd

03:00.0 VGA compatible controller: NVIDIA Corporation GK208B [GeForce GT 730] (rev a1)
03:00.1 Audio device: NVIDIA Corporation GK208 HDMI/DP Audio Controller (rev a1)

cat /proc/asound/devices
1: : sequencer
2: [ 0- 3]: digital audio playback
3: [ 0- 7]: digital audio playback
4: [ 0- 8]: digital audio playback
5: [ 0- 9]: digital audio playback
6: [ 0-10]: digital audio playback
7: [ 0- 0]: hardware dependent
8: [ 0] : control
33: : timer

off to check the link about alternates.

note that if i boot live media and try sound, all is well. gnome/sound only sees the output device, not input,

but i get sound. rebooting the installed system, i get same gnome/sound display, but no audio.

anyone get helvum working??

next to review the below reference, Thx!!

At this link,
https://alsa.opensrc.org/DigitalOut
about halfway down the page you will find an Alternate Method
subsection. It describes a way to test the digital output to see which
one is legitimate using aplay or mplayer. Note that they use different
device specifications, with mplayer using a specification like the one
Tom Horsley described in his post.

That will give you the exact device which you want pipewire to be
using. Note that hdmi is a digital format so you might have to use the
-D plugin option to aplay.

This will only give you the name of the alsa device that you want to
use with pipewire. It doesn't tell you how to specify that pipewire
use that device as default.
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