We have collected the most relevant information on Pulseaudio 5.1 Spdif. Open the URLs, which are collected below, and you will find all the info you are interested in.
Getting DTS 5.1+ sound via S/PDIF or HDMI using PulseAudio ...
https://blogs.gentoo.org/mgorny/2021/07/25/getting-dts-5-1-sound-via-s-pdif-or-hdmi-using-pulseaudio/
Finally, you have to enable S/PDIF passthrough (the same option is used for HDMI) in mpv, via ~/.config/mpv/mpv.conf: audio-spdif=ac3,dts,eac3 audio-channels=5.1 The full list of formats can be found in mpv(1) manpage. If everything works fine, you’re going to see something like the following in mpv output: AO: [alsa] 48000Hz stereo 2ch spdif-ac3
Problem with 5.1 AC-3 through Alsa, Pulseaudio on SPDIF ...
https://askubuntu.com/questions/483555/problem-with-5-1-ac-3-through-alsa-pulseaudio-on-spdif-ubuntu-14-04
Same issue as John N, trying to get SPDIF working on a Zotac box, using Ubuntu 14.10. I walked through the same steps, and got 5.1 channel sound selected, but when trying to play videos without pavucontrol open the videos would freeze and the AV receiver would show intermittent signal being received.
[SOLVED] Pulseaudio surround51 with S/PDIF / Newbie Corner ...
https://bbs.archlinux.org/viewtopic.php?id=254084
surround51 profile doesn't output any sound. Profile iec985-stereo+input:analog-stereo outputs sound properly but stereo only (front left and front right) - logs attached below. Optical Cable connected from S/PDIF port on motherboard with Realtek ALC1220 chip to the S/PDIF on the receiver (onkyo tx nr-686) Speakers are connected to the receiver ...
PulseAudio for analog/spdif hell – so simple, yet you have ...
https://blog.kanojo.de/2011/09/18/pulseaudio-for-analogspdif-hell-simple-yet-you-gotta-find-it/
PulseAudio for analog/spdif hell – so simple, yet you have to know…. 18.09.2011 by Nebukadneza. When it comes to a flexible audio setup Alsa starts to suck … hard. If you want output mainly on S/PDIF (be it optical or coax), automatically upmixed to 5.1, then encoded to A52 so your receiver will eat it, but sometimes your general AC3-passthrough 5.1 movie, sometimes …
Pulseaudio & digital surround / spdif - Debian User Forums
https://forums.debian.net/viewtopic.php?t=75346
After doing that Digital Surround 5.1 (IE958/AC3) shows up in pavucontrol, but upon selecting it pulseaudio just seems to crash and restart, in effect making it impossible to use. Digital Stereo via IEC958 works by default.
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