Asus Chromebook CX1405CKA - Unable to Get Sound Working on Zorin

Yes, Zorin is a LTS distribution as it is based on ubuntu 24.04. Ubuntu has LTS versions and non-LTS ones, but Zorin is always based on the LTS versions of ubunu. You can try a current ubuntu 26.04 LTS version, that should work with the script, or Debian 13.

OK, well I kind of gave up getting the script to work. I was attempting to get it work myself. I found a post on another site where someone with a similar device was having the same issues where their trackpad and audio didn't work. They shared a solution from someone getting their trackpad working on Mint and it also worked for me, but sadly the fix that got their audio working doesn't work for me.

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The link is interesting because the script could be customized for LM.
Did you encounter the same syntax error when running the audio script as the user there, or a different one?

No frustratingly, I didn't encounter any errors when I ran the script outside of just mentioning that I'm not running a supported distro. So I don't even know where the issue is coming from.

This was my result:

./setup-audio
[sudo] password for asus:
Detecting platform
Detected Intel Jasperlake
Installing UCM configuration
Cloning into '/tmp/alsa-ucm-conf-cros'...
remote: Enumerating objects: 117, done.
remote: Counting objects: 100% (117/117), done.
remote: Compressing objects: 100% (80/80), done.
remote: Total 117 (delta 35), reused 94 (delta 30), pack-reused 0 (from 0)
Receiving objects: 100% (117/117), 20.81 KiB | 10.40 MiB/s, done.
Resolving deltas: 100% (35/35), done.
Checking kernel config for 7.1.3-070103-generic
Detecting codecs
Found rt5650
Kernel config check passed
Increasing alsa headroom (fixes instability)
Initializing sound card
Found hardware: "HDA-Intel" "Intel Jasperlake HDMI" "HDA:8086281a,80860101,00100000" "0x8086" "0x7270"
Hardware is initialized using a generic method
Audio setup finished! Reboot to complete setup.
Warning: Your distro is not officially supported. Expect Issues.
Please try a supported distro first before opening an issue. See the README for a list of supported distros.

Yet it still only detects dummy audio.

From a terminal session (Ctrl+Alt+T)
run

alsamixer

In alsamixer.
Hit F6 to list sound cards.
Post a screenshot of what is listed.

Sorry for the delay but sadly I can't get any function keys working, even with an external keyboard. Is there any alternative to get the information you're asking for?

I don't know about the keyboard issue, but found a possible solution for sound:

Without use of function keys working, you will have trouble.
If you were able to get alsamixer screen displayed, post a screenshot of that and maybe it will give a clue.
Hopefully Swarfendor's post will help solve the problem and this is not needed.

With regard to Function key issue, see if anything in this thread helps: