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Author Topic: HDMI sound...  (Read 768 times)

Offline masterglob

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HDMI sound...
« on: October 14, 2021, 10:25:37 PM »
Hi all,

I am using HIFIBerry-DAC + HDMI on my RPI3B+ to get a 4 channel audio stream. I precise that I use an HDMI audio extractor (I have no tv or monitor connected, but the extractor has an HDMI through output)

I get everything work correctly (including latency correction between DAC & HDMI).

However I do not get the HDMI sound working every time. It sometimes does not output any soundat all. When this happens, it seems to be solved after a`reboot` (hw or sw).
I tryied the following settings on config.txt, but it does not change anything :
Code: [Select]
hdmi_force_hotplug=1
hdmi_group=1 # (also tried 2)
hdmi_mode=16 # (also tried 1)
hdmi_drive=2
config_hdmi_boost=4

dtparam=audio=on
dtoverlay=i2s-mmap,i2s=on
dtoverlay=hifiberry-dac
dtoverlay=pi3-disable-bt


I saw on some forums that calling tvservice may help finding the issue, but I am currently using the following version, and I have not been able to find tha module for my release.
Code: [Select]
root@WTPLAYER:/home/tc# uname -a
Linux WTPLAYER 4.9.22-piCore-v7 #1 SMP Sat Apr 15 12:27:07 UTC 2017 armv7l GNU/Linux

Any idea of what I could additionally check?
Do you think it is worth trying an update of tc and that it may solve my issue? (I admit I do not really want to update my system)

Thanks for any suggestion !

Offline masterglob

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  • Posts: 11
Re: HDMI sound...
« Reply #1 on: January 09, 2022, 04:58:13 AM »
Could not find the issue...

I finally replaced the HDMI + HDMI converter by ousing the audio jack output...

By the way, I am surprised that Jack has in the end less noise than HDMI...