[Solved] internal microphone not working bookworm

[zbinkz]

Hi,

This is on a fresh install of Debian 12.0 on a Fujitsu LifeBook U series (Alder Lake), with xfce4.

The sound card is a Realtek ACL257. My internal microphone is detected, but does not seem to work. I can see it in `xfce4-pulseaudio-plugin` and in `alsamixer`, but it just does not record anything. Tried `arecord`, zoom and an online microphone test tool. None of them recorded any sound. The speakers work fine on the other hand.

As far as I can tell all the drivers are installed. Am I maybe missing a setting somewhere? Any help is appreciated.

Thanks

[CynicalDebian]

I went to "DebianOn" and searched for your laptop.

https://wiki.debian.org/InstallingDebia ... 1/bullseye

And I found this in the audio section:

The sound device is:

00:1f.3 Multimedia audio controller: Intel Corporation Alder Lake PCH-P High Definition Audio Controller (rev 01)

Which works with the latest firmware from the SOF project. There is a bug and a workaround to get the microphone working: https://github.com/thesofproject/linux/issues/4099

While they claim to have a workaround, it appears that the original issue is still not fixed for that user, but maybe it is possible with the newer firmware available in bookworm.

First, check if "firmware-sof-signed" is installed.

Code: Select all

#apt install firmware-sof-signed
$systemctl reboot

Then see if that fixes your audio issue, the newer firmware may fix the bug.

If not, try setting the kernel option for the module listed in the bug. (The ~ represent line numbers, do not include them in the file.)

Code: Select all

#editor /etc/modprobe.d/micfix.conf
~
~#This fixes the microphone issue on my Fujitsu LifeBook U series yyyy-mm-dd
~options snd-sof-pci tplg_filename=sof-hda-generic-2ch-pdm1.tplg

Let us know if that helps.

[zbinkz]

Thanks @CynicalDebian, it worked like a charm!

Already had `firware-sof-signed` installed. So, creating `/etc/modprobe.d/micfix.conf` and reloading the module fixed everything. I tested the mic with Skype Online and Online Mic Test, and it's all good.

[sunrat]

Great you got it sorted.
Please edit the title of your first post to add prefix [Solved} so it may help others searching for the same solution.

[mujtabaniz]

solved thanks

[smz]

After trying several different other solutions, this one solved the issue, thank you so much!!

[specificfour]

Thank you very much @CynicalDebian, installing firmware-sof-signed instantly fixed the issue, so confirmed to work also on ASUS Vivobook X712DK_M712DK!