The built-in microphone cannot record #4099

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1. plbossart commented on Dec 14, 2022

   

   plbossart

   on Dec 14, 2022

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   @imtangmeng I suspect you have the PDM1 problem, it's a classic on Lenovo platforms.

   Can you add this file
   sof-dyndbg.conf.txt as /etc/modprobe.d/sof-dyndbg.conf and attach the full dmesg log.

   Thanks!
2. plbossart

   added

   DMIC-PDM1DMIC issue due to use of PDM1 instead of PDM0DMIC issue due to use of PDM1 instead of PDM0

   on Dec 14, 2022
3. imtangmeng commented on Dec 15, 2022

   

   imtangmeng

   on Dec 15, 2022

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   The full dmesg log is as follow:
   https://github.com/imtangmeng/intel-audio/blob/master/dmesg.log
4. plbossart commented on Dec 15, 2022

   

   plbossart

   on Dec 15, 2022

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   Thanks @imtangmeng so you do have 2 mics, and there's a known issue with some platforms that connect the 2 mics to PDM1 instead of the default PDM0.

   [    4.077807] sof-audio-pci-intel-cnl 0000:00:1f.3: DMICs detected in NHLT tables: 2
   [    4.181360] snd_sof:snd_sof_load_topology: sof-audio-pci-intel-cnl 0000:00:1f.3: loading topology:intel/sof-tplg/sof-hda-generic-2ch.tplg
   

   the only work-around we have in those cases is to try with a different topology sof-hda-generic-2ch-pdm1.tplg (file zipped
   sof-hda-generic-2ch-pdm1.tplg.gz

   In theory this file should already be in /lib/firmware/intel/sof-tplg, but if it isn't just unzip and copy it over to this location.

   They you can use

   options snd-sof-pci tplg_filename=sof-hda-generic-2ch-pdm1.tplg
   

   if your kernel does not provide this option, which was added recently, then override your default file after backing it up.

   cp sof-hda-generic-2ch.tplg sof-hda-generic-2ch.tplg.backup
   cp sof-hda-generic-2ch-pdm1.tplg sof-hda-generic-2ch.tplg
   

   This override is problematic because it will break at every distribution update.

   Let us know if that fixes your issue.
5. imtangmeng commented on Dec 16, 2022

   

   imtangmeng

   on Dec 16, 2022

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   Unfortunately, the issue was not resolved.

   After doing the following actions, the speaker, microphone and headset become unrecognizable:

   cp sof-hda-generic-2ch.tplg sof-hda-generic-2ch.tplg.backup
   cp sof-hda-generic-2ch-pdm1.tplg sof-hda-generic-2ch.tplg

   The full dmesg log is as follows:
   https://github.com/imtangmeng/intel-audio/blob/master/dmesg-sof-hda-generic-2ch-pdm1.log
6. plbossart commented on Dec 16, 2022

   

   plbossart

   on Dec 16, 2022

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   humm, this is really surprising. You have tons of errors not related to the DMIC, and the only differences are this

   $ diff sof-hda-generic-2ch.conf sof-hda-generic-2ch-pdm1.conf 
   2206,2207c2206,2207
   < 	tuples."short.pdm0" {
   < 		SOF_TKN_INTEL_DMIC_PDM_CTRL_ID		"0"
   ---
   > 	tuples."short.pdm1" {
   > 		SOF_TKN_INTEL_DMIC_PDM_CTRL_ID		"1"
   2280,2281c2280,2281
   < 	tuples."short.pdm0" {
   < 		SOF_TKN_INTEL_DMIC_PDM_CTRL_ID		"0"
   ---
   > 	tuples."short.pdm1" {
   > 		SOF_TKN_INTEL_DMIC_PDM_CTRL_ID		"1"
   

   and looking at the initial log I see this

   [    4.174907] sof-audio-pci-intel-cnl 0000:00:1f.3: Firmware info: version 1:6:0-18fab
   

   This is completely obsolete, you need to update your SOF firmware/topology first, and then try the PDM1 part later.
7. imtangmeng commented on Dec 19, 2022

   

   imtangmeng

   on Dec 19, 2022

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   After I updated my SOF firmware/topology and try the PDM1 part, the built-in microphone is still not recognized using:
   https://github.com/imtangmeng/intel-audio/blob/master/dmesg.log
8. plbossart commented on Dec 19, 2022

   

   plbossart

   on Dec 19, 2022

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   @imtangmeng well, there is progress in that there is no error at the kernel level. So you will have to try to see at the alsa hw device level what happens. See https://thesofproject.github.io/latest/getting_started/intel_debug/suggestions.html#digital-mic-issues

   If your mic is not recognized at the PulseAudio/Pipewire level it's a different issue related to missing UCM files. Given that you didn't have the last firmware, it wouldn't be surprising that you also don't have the alsa-ucm-conf updates.
9. imtangmeng commented on Dec 20, 2022

   

   imtangmeng

   on Dec 20, 2022

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   In fact, I have updated alsa-ucm-conf first, with the following information:
   !!Packages installed
   !!--------------------

   ii alsa-topology-conf 1.2.4-1 all ALSA topology configuration files
   ii alsa-ucm-conf 1.2.8-1 all ALSA Use Case Manager configuration files
   ii alsa-utils 1.2.4-1 amd64 Utilities for configuring and using ALSA

   Detailed information reference link:
   https://github.com/imtangmeng/intel-audio/blob/master/alsa-info.txt.noVeE9NBHn

   I speculate that alsa-ucm-conf may need to be modify for this machine, but I don't know how to configure it
10. plbossart commented on Dec 21, 2022

    

    plbossart

    on Dec 21, 2022

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    You don't need any specific UCM support to test the dmic support, see the link above.