Thanks. This is a puzzle. Your configuration looks correct. I think sound should work.
I checked the HD-Audio-Models.txt for the ALC29x (as your PC has an ALC294) and I could not find an entry that was specific to your Asus module.
I note you are not the only one to have this issue, as I have read of Ubuntu users with the ALC294 having the problem. One solution that works for some Ubuntu users is to force this module option ( asus-zenbook ) although you don’t have a zenbook.
You could try it … ie with root permissions add this line to the end of your /etc/modprobe.d/50-sound.conf file:
options snd-hda-intel model=asus-zenbook
Save that change and reboot. If the file didn’t exist, create it, add the line, and reboot.
If it totally breaks your headset sound, then remove that edit (or the file, as applicable).
I am though dubious that it will work.
Rather than waste time of my speculating and asking you to try a half dozen different speculative things, I recommend you do not waste time, but rather immediately write a bug report on the Tumbleweed 5.10.5-1-default kernel for the ALC294 on your Asus ROG Strix G712LV_G712LV.
There is guidance here for bug reports: https://en.opensuse.org/openSUSE:Submitting_bug_reports
I believe < not sure > you can use your openSUSE forum username and password when logging on to Buzzila.
Its best to write the bug report on the ‘kernel’ as the alsa sound driver comes with the kernel.
Re-run the diagnostic script as below:
and attach the file (where your alsa-information is located), that was created by that script, to your bug report.
This should then get the attention of the openSUSE audio/sound packager, who is also a GNU/Linux sound developer (I believe). i.e. you will then get the best help possible for GNU/Linux for audio.