http://alsa-project.org/db/?f=215a4d6994b722cd57be1d31888627bd9def76b1
Asus ROG Strix G712LU
Audio device [0403]: Intel Corporation Comet Lake PCH
Kernel version 5.8.18 is now marked End Of Life so I suggest you update to kernel v5.9
A modprobe option has been added to this system, which would have disabled the onboard digital array microphone (dmic), so the rest of the audio system would work
!!Modprobe options (Sound related)
!!--------------------------------
snd_hda_intel: dmic_detect=0
But this option has now been deprecated and does not work with kernel v5.8
!!ALSA/HDA dmesg
!!--------------
snd_hda_intel 0000:00:1f.3: dmic_detect option is deprecated, pass snd-intel-dspcfg.dsp_driver=1 option instead
please post response to this command to find file containing non-working modprobe option
grep snd /etc/modprobe.d/*.conf
If you want to continue using system with the internal dmic disabled
replacing the old modprobe option with `options snd-intel-dspcfg dsp_driver=1’
should get system working as before
but the internal dmic might now be supported by the latest packages
All audio devices (including the internal microphone) may work correctly if the old modprobe option is removed and not replaced