> [~] cat /sys/bus/pci/devices/0000\:00\:1f.3/device > 0x02c8 so that's CometLake LP > [~] cat /sys/bus/pci/devices/0000\:00\:1f.3/class > 0x040100 this one means the audio DSP is enabled, but might not be required for your platform. > [~] sudo lspci -vvv -s 00:1f.3 > 00:1f.3 Multimedia audio controller: Intel Corporation Comet Lake PCH-LP cAVS > Subsystem: Fujitsu Client Computing Limited Comet Lake PCH-LP cAVS > Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ > Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- > Latency: 32, Cache Line Size: 64 bytes > Interrupt: pin A routed to IRQ 173 > IOMMU group: 13 > Region 0: Memory at a2130000 (64-bit, non-prefetchable) [size=16K] > Region 4: Memory at 604e000000 (64-bit, non-prefetchable) [size=1M] > Capabilities: [50] Power Management version 3 > Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0-,D1-,D2-,D3hot+,D3cold+) > Status: D3 NoSoftRst+ PME-Enable+ DSel=0 DScale=0 PME- > Capabilities: [80] Vendor Specific Information: Len=14 <?> > Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ > Address: 00000000fee008d8 Data: 0000 > Kernel driver in use: snd_hda_intel and this means the kernel did not detect an interface that requires the DSP. Looking at your alsa-info log, an alternate explanation is that your distribution forces the use of the snd_intel_dspcfg: dsp_driver=1 option, which will select the HDaudio legacy. If you happen to have a device with microphones attached to the PCH, not the HDaudio codec, then by design you *cannot* use the legacy HDaudio driver (snd-hda-intel). you will have to use the SOF driver (snd-sof-pci-intel-cnl). Can you check in /etc/modprobe.d/*.conf if you see a configuration that sets this module parameter? If you see this option set, try to comment it out and reboot. You should really avoid setting the dsp_driver option since it will bypass the autodetection and might result in the wrong driver being used.
