Install Realtek Audio drivers in Ubuntu 20.04 (Intel Nuc nuc10i7fnh)

Solution 1:

I finally made it work. Even if it's not DELL, the fix in this post on Intel community forum magically works!

add

options snd-hda-intel model=dell-headset-multi

to the file /etc/modprobe.d/alsa-base.conf

Then reboot. Works like a charm.

Solution 2:

This is in response to dunbrokin's post. I have a NUC11PAHi5 (which I assume is the same as the NUC11PAHi7 except for CPU) running Ubuntu 21.04 and am able to get the HDMI audio working by locking the screen (using Super-L or Windows-L), wait a few seconds for the screen to go black, and then unlocking the screen.

The HDMI/Display Port - Built-in Audio output device will then appear in the audio settings. You'll need to do it every time you reboot.

It's not perfect, but it's a work-around until we work out why it doesn't appear automatically on reboot. Please let me know if you see similar behaviour with your NUC.

Interestingly when I boot-up with the Ubuntu 21.04 live USB, the HDMI audio works fine without needing to do the screen lock trick. I've also noticed that Ubuntu 20.04.3 and Fedora 34 have the same problem.