Speakers not working on HP omen DH0137tx

The modprobe option dmic_detect=0 did not work the last time you tried it in Aug 2020 because option had been deprecated and replaced

$ modinfo snd-hda-intel | grep dmic
parm:           dmic_detect:Allow DSP driver selection (bypass this driver) (0=off, 1=on) (default=1); deprecated, use snd-intel-dspcfg.dsp_driver option instead (bool)
$ modinfo snd-intel-dspcfg | grep dsp_driver
parm:           dsp_driver:Force the DSP driver for Intel DSP (0=auto, 1=legacy, 2=SST, 3=SOF) (int)

Changing the modprobe option was confirmed to work in a later post:

But snd_hda_intel driver does not support integrated dual array digital microphone