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My audio settings window (Ubuntu 16.04.6 LTS) does not show the HDMI audio output, thus I cannot select it. I only see the regular analogue stereo output, which works fine.

However, I know that HDMI output works, as I can reproduce audio from the monitor-speaker which I connected via the HDMI, using one of these commands:

speaker-test --channels 2 --rate 48000 --device hw:1,3
aplay -D plughw:1,3 /usr/share/sounds/alsa/Front_Center.wav

The HDMI audio device is also always listed in the output of these commands:

aplay -l
lspci | grep -i audio
cat /proc/asound/cards

None of the solutions proposed in this very related question worked for me.

Can anybody help?

L. Bruce
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2 Answers2

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I found a solution in this other answer.

I had do add this line

load-module module-alsa-sink device=hw:1,3

to /etc/pulse/default.pa, and then restart pulseaudio with

pulseaudio -k

After that, the HDMI audio device appeared in the list in the audio settings.

I obtained the coordinates 1:3 of hw:1,3 looking at the output of aplay -l

L. Bruce
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  • Had exactly the same issue with Ubuntu 20.04 (unbelieavable...), and the same solution worked for me. – L. Bruce Oct 29 '21 at 20:13
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after hours google this problem finally, I found the working solution on this link

step 1 : install alsa tool GUI
sudo apt-get install alsa-tools-gui
step 2 : find and open hdajackretask tool in ubuntu application list
step 3 : choose your right codec from combo on top right ( for me intel kabylake HDMI )
step 4 : check show unconnected pins option
step 5 : below pin configuration part select Override option for all of not connected device and switch from not connected to HDMI/DisplayPort
step 6 : click on Apply now and done.
ps : if after click on Apply now you see device busy error click on install boot override and reboot you system.
hope this help you

a.sadegh63
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