using hdmi port for sound

[tsawyer]

I want to use the hdmi port of my pi3b+ running r6 (rAudio 1 • 20201230). I have more hdmi ports than analog ports so I tried it. of course no sound so I looked in the audio under mpd. I don't have an option to switch to the hdmi, only onboard headphones. I do see:

# cat /etc/asound.conf

defaults.pcm.card 0
defaults.ctl.card 0

do I edit it to say 1 instead of 0 or is there something else that allows hdmi output?

[tsawyer]

that option did not work, did a little more digging and saw something else. running these gave me an output of

cat /proc/asound/cards
0 [Headphones ]: bcm2835_headphonbcm2835 Headphones - bcm2835 Headphones
bcm2835 Headphones


aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7


so to me, it seems like the hdmi port is ever recognized meaning it would be a little harder to select as the preferred sound output. has anyone been able to use the hdmi for sound?

[eea123]

I'm just running it on RCA outs, but does this discussion help?

additional-programs-and-hdmi-t336.html

[tsawyer]

thanx for the link. based on the date, I believe it deals with an older version of rune, not the current iteration. ironically the poster references a denon receiver which is what I have. the issue with their receivers is you have to configure ports. it does not just take a signal from an input and process it, you have to set things up *if you do not use hdmi*. thus, I preferred to use the hdmi port out of pi. I was using hdmi under the 0.5 older version without issue. from the lack of posts and not seeing any config that seemed to address hmdi hardware, I do not believe the latest version of rune has that capability. hopefully that function will be added in the near future.

[tsawyer]

and rite after I sent my post up, saw there was an update. of course I need to walk back parts of it, there is now hdmi support. thank you very much. I am leaving all the information up for reference but I now will be checking out the hdmi support later when I get some time to hop on that box/sound system

[tsawyer]

I updated to v 0.22.3-2 and don't see hdmi now. I really thought I saw it a few days ago. was that left out of the last update or something else happened (not excluding the fact I could be seeing things at this point)?

[eea123]

I'm still using release version: 0.4 (build: beta-20160313). Once I got my system setup, I just left well enough alone. I did just check and under the output settings (I'm using a generic I2S under the HiFi Berry setting) I do see the RaspberryPI's HDMI as an output choice. My B&K preamp is a Ref 50, so no HDMI ports to test it out.

[rern]

On newer kernel, HDMI is disabled unless connected:

- Before boot
or
- Set hdmi_force_hotplug, hdmi_group, hdmi_mode

rern

[tsawyer]

does the receiver have to be on to send a signal to the hdmi port to show it's active at time of boot? I have a hdmi cable plugged in but I bounced the pi while the receiver was off. I can test it later tontie but wanted to check now.

and where/what file would the command be edited? I'm thinking I would (for my use) be better off forcing that config than having it on and selected everytime I update