Like this? I did not remove the post. Did I do something wrong?
Another question. HDMI only has two audio channels?
~$ sudo /opt/vc/bin/tvservice -a
PCM supported: Max channels: 2, Max samplerate: 48kHz, Max samplesize 24 bits.
Oh, I’m using the version > volumio-2.882-2021-04-24-pi.img
no @NaviGO you didn’t do any thing wrong i wasn’t sure so we have to wait
for the pro’s i’m just novice… @gvolt can you pick it up… i’m more a rpi4 guy.
I am not familiar with audio over HDMI, so I can’t really help. I can only report that it just worked on a Pi4 running Volumio 2.882 with the output device set to “HDMI out”. I did not use any commands from the command line (like sudo amixer cset numid = 3 2).
Just in case it could be of interest, here is the output of aplay -l:
PCM supported: Max channels: 8, Max samplerate: 192kHz, Max samplesize 24 bits.
AC3 supported: Max channels: 6, Max samplerate: 48kHz, Max rate 640 kb/s.
DTS supported: Max channels: 6, Max samplerate: 96kHz, Max rate 1536 kb/s.
EAC3 supported: Max channels: 8, Max samplerate: 48kHz, Max rate 8 kb/s.
DTS_HD supported: Max channels: 8, Max samplerate: 192kHz, Max rate 8 kb/s.
Using “MPlayer” I can play MP3 files easily at HDMI output, that is, very likely is a Volumio bug.
Would it be case to open some help request in Github?
5.1 surround sound physically needs only a stereo connection (which the R-PI has in the form of the 3.5mm jack). Surround information is encoded in the phase difference of the stereo signal. GPIO Module they call that a Hat you will find them in many forms.