*System*: Dell Precision 3571 Realtek ALC3204 codec Intel Alder Lake (SOF platform)
*Symptoms*: Internal mic is silent or muffled in all Linux applications Works perfectly in Windows SOF driver loads correctly with firmware sof-adl.ri and topology sof-hda-generic.tplg But dmesg shows:
sof-audio-pci-intel-tgl 0000:00:1f.3: DMICs detected in NHLT tables: 0
No working audio input nodes exposed in PipeWire
*Tested*:
-
Ubuntu 24.04 with kernel 6.8.0-57-generic -
snd-intel-dspcfg.dsp_driver=3 set -
PulseAudio and PipeWire backends -
alsa-base.conf overrides for model options -
hdajackretask pin remapping -
SOF firmware and topology confirmed present
*Conclusion*: Firmware/ACPI likely missing DMIC NHLT entry; requesting kernel quirk or guidance