Herobox - No HDMI sound option in Linux

Hi, I have installed Arch linux on my herobox. However, I am not given an option to select HDMI as the sound output. By default all the disributions of linux I tried did not work properly with the sound card and only offered a “dummy output” unless I intalled the sof-firmware package. This also happens with Mint (Ubuntu).

Is there any way to get HDMI audio output? Did you do anything special to the packged Ubuntu to address this?


Hi, I found a fix that worked for me. Putting it here for other people to use.

echo “options snd-hda-intel dmic_detect=0” | sudo tee -a /etc/modprobe.d/alsa-base.conf
echo “blacklist snd_soc_skl” | sudo tee -a /etc/modprobe.d/blacklist.conf

Then reboot. HDMI was then an option and works fine. I read that this was a linux kernel regression.


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