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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/
Getting DTS 5.1+ sound via S/PDIF or HDMI using PulseAudio While PCs still usually provide a full set of analog jacks capable of outputting a 5.1 audio, other modern hardware (such as TVs) is usually limited to digital audio outputs (and sometimes analog outputs limited to stereo sound). These outputs are either S/PDIF (coaxial or optical) or HDMI.
pulseaudio - no sound on iec958 S/PDIF input - sound card ...
https://unix.stackexchange.com/questions/677207/no-sound-on-iec958-s-pdif-input-sound-card-usb-cm106
The digital input iec958 is visible within graphical pavucontrol or pulse command line answers. But the sound meter (vumeter) remain empty, no sound, no signal. I do not have any other sound device to check the FreeBox player S/PDIF output. Is there any file I could check, in /sys or /proc or /dev, to see if there is any digital signal/data ?
[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 with external DAC over S/PDIF - can't set ...
https://bbs.archlinux.org/viewtopic.php?id=245765
$ pulseaudio -vvvv ... D: [pulseaudio] alsa-util.c: Trying iec958:0 with SND_PCM_NO_AUTO_FORMAT ... D: [pulseaudio] alsa-util.c: Managed to open iec958:0 D: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_format(Signed 24 bit Little Endian in 3bytes) failed: Некоректний аргумент D: [pulseaudio] alsa-util.c: …
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.
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