No sound ALC294 Asus ROG Strix 512 Ubuntu 20.04.01

On a Asus ROG Strix G17 G712LU-H7009T / Linux Mint 20 (Cinnamon), I faced the same problem (as many Linux users with ALC294 sound chipset). By setting :

options snd-hda-intel model=asus-zenbook

...in /etc/modprobe.d/alsa-base.conf, I was able to have sound on headphones and internal speakers, but the sound volume does not work properly with this modification (100% or 0% only using the OS sound volume control).

So this is a partial solution but this is better than nothing. I tried many solutions involving hdajackretask or alsa-base.conf, or what's described here with no luck. ALC294 seems to be a tough one for Linux :).

I added this configuration on https://doc.ubuntu-fr.org/audio_intel_hda.

EDIT

If like me you experience sound volume troubles (all or nothing) --> https://askubuntu.com/a/1091197/360145

For volume control after editing "options snd-hda-intel model=asus-zenbook"

try: My volume is either max volume or muted, no middle ground