MPD and Displayport/HDMI -- alsa says no device

[c2b2pss]

So I can get sound through the HDMI, but for some reason it is not native DSD. It shows as 48Khz ouput 2 ch. I have a receiver that native decodes DSD at high rates.

If I attach my USB DSD DAC it shows DSD as input and the audio is fine too.

1. Is there any limitation on HDMI sample rate. The file is 225 bits -352.8 KHz.
2. How do I force native-dsd ouput on HDMI using mpd.conf.
3. Any way to check if my mpd has DSD support ??

Thanks!

mpd.conf file:

music_directory         "/media/music"

user                            "root"

group                           "root"

#bind_to_address                "~/.mpd/socket"

port                            "6600"

#log_level                      "default"

gapless_mp3_playback                    "yes"

restore_paused                           "yes"

save_absolute_paths_in_playlists        "yes"

gapless_mp3_playback                    "yes"

metadata_to_use "artist,album,title,track,name,genre,date,composer,performer,disc$

#follow_outside_symlinks        "yes"

#follow_inside_symlinks         "yes"

#zeroconf_enabled               "yes"

#password                        "password@read,add,control,admin"

#zeroconf_enabled               "yes"

#zeroconf_name                  "music"

#password                        "password@read,add,control,admin"

#volume_normalization           "no"

#filesystem_charset              "UTF-8"

#id3v1_encoding                  "ISO-8859-1"

realtime_option {
        memlock "yes"
        stack_reserve "1024"
        heap_reserve "10240"
        main_priority "OTHER:0"
        player_priority "FIFO:32"
        decoder_priority "FIFO:31"
        update_priority "OTHER:0"
}

zeroconf_enabled    "yes"
zeroconf_name "music-OptiPlex-790"
audio_output {
   type "alsa"
   name "HDMI 0"
   device "hw:0,3"
   buffer_time "40000"
   period_time "10000"
   auto_format  "no"
   auto_channels "no"
   mixer_type "none"
   replay_gain_handler "none"
   use_mmap "yes"
}

Weirdly alsa does not report the HDMI as input....maybe it is some thing at kernel level. With only HDMI no other dac....

aplay -Ll
null
    Discard all samples (playback) or generate zero samples (capture)
aplay: device_list:270: no soundcards found...

With USB DAC attached:

cat /proc/asound/card*
cat: /proc/asound/card0: Is a directory
cat: /proc/asound/card1: Is a directory
 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0xe1a60000 irq 26
 1 [D10s           ]: USB-Audio - D10s
                      Topping D10s at usb-0000:00:1d.0-1.2, high speed

[MPconta]

I'm sorry to disappoint you. As far as i know, there is absolutely no way to get DSD over HDMI (from a PC). I think there exists no kernel-driver and no driver for ALSA too.

[MaxKellermann]

realtime_option {

If this doesn't cause MPD to abort startup with an error message, it means you're using a MPD fork with bad code that has been rejected by this project due to quality problems. Please do not ask for help with MPD forks. Only MPD from this code repository is supported.

[c2b2pss]

Max,

You have gotten a very wrong impression of where I am coming from. Let me apologize in any case for any slights. I fully understand the pain I myself have felt trying other peoples forks of this mpd. And so I understand also how bad it is for you -- seriously bad -- some of the forks are as I have spent days non-stop trying to get any to work. I hate it when things are just such badly written and then put out for consumption. The mpd forks are a bloody muddy mess!!! I just want a linux server to play my audio....and mpd as the main player, Period. The rest be damned, I say. I don't want to get involved in this name calling, please.

I am seriously not interested in forking or interfering -- I am trying painfully to see if some "talked" about changes can be made to mpd . It is a personal venture...but when there is something basic like getting HDMI audio etc., that I am clueless about I hope to post and get some input. IF I find something I know works, I am very happy to share here and just leave the credit to you.

If this is against the discussions here, I am sorry again, and I'll plod along on my own.

Regards!

[c2b2pss]

Sorry I meant instructions -- like mpd.conf parameters or other settings? How do I tell it to convert all DSD to PCM on the fly?

[MaxKellermann]

Can you read?

It's the default mode if native DSD is not supported.

And it's documented in https://mpd.readthedocs.io/en/stable/user.html#direct-stream-digital-dsd

[c2b2pss]

Ok. OK. I get it. Whew! :-)

[c2b2pss]

Without malice ,why is there so much anxiety in all these discussions? It's very intimidating to ask for help, contrary to the professed sentiments of any such group. Not all of us are coding geeks -- we just want to make sure info is correctly understood.

It is very stressful for lesser folk to navigate these .

[MaxKellermann]

It is very stressful when people keep repeating questions when the answer has already been given, twice.
It is also very stressful to invest a lot of free time to write documentation, and people ask questions without having read a single piece of it, and even when you point them directly at the relevant part of the documentation, they still don't read it and repeat the question.
You were not asking to make sure something is correctly understood, you kept repeating the same question without context and without any reference to previous replies.
And about ...

why is there so much anxiety in all these discussions? It's very intimidating to ask for help

You ask why there is anxiety, when in the second sentence you say it's your own anxiety. I have no idea, but I I don't have time to discuss your anxiety. So let's stay on-topic and discuss MPD and nothing else.