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Ubuntu 20.04 HDMI audio output not working (Intel NUC NUC11PAHi5)

dm flag

I have Ubuntu 20.04 on an Intel NUC NUC11PAHi5, and can't get HDMI audio output to work. I did notice if I suspend and resume, 2 channel HDMI audio will work, until I reboot, but not 5.1 channel HDMI audio. Is there any instructions to get audio working properly?

I did fix the aux jack that was also not working by following this,Install Realtek Audio drivers in Ubuntu 20.04 (Intel Nuc nuc10i7fnh)

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US flag
user1663144

I have the same NUC and was able to get 5.1 working in 22.04. I ended up using a USB-C to HDMI cable but I still needed to suspend and resume, sometimes several times. I had issues with channels being swapped too (e.g., center channel playing in front right) which fixed itself through suspend and resume.

Unfortunately, it doesn't seem like there's a proper fix (at least I haven't found one) and pipewire in 22.10 isn't any better. In fact, I can't even get 5.1 to work at all, and it still takes suspend and resume to get 2.0 to work.

Billy avatar
dm flag
I found this https://www.intel.com/content/www/us/en/support/articles/000030985/intel-nuc.html but it's quite old and I got error message when I tried it in the terminal, I wonder if there is an updated version?
Billy avatar
dm flag
Well that post was depressing to read ;/
Billy avatar
dm flag
Wait, I'm a bit confused, you said 5.1 works with USB-C to HDMI after a few times suspending. Once it works does it permanently stay until reboot? But then you also said you can't get 5.1 to work at all?
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