Package: src:firwmare-sof Severity: important Version: 1.7-1
I just upgraded a notebook to a fresh Debian 11 system (I started the system with Debian testing +/- a year ago).
The notebook device is a Lenovo Thinkpad 13S. A year ago, I turned the dsp_driver on to work-around the firmware-sof package not having been provided in Debian back then:
``` cat /etc/modprobe.d/no-sof.conf # play sound without the SOF firmware options snd_intel_dspcfg dsp_driver=1 ```One complaint of the customer who owns the notebooks then was, that the internal microphone was not usable with those machines.
Today, I looked at switching to using the SOF firmware with the snd_hda_intel driver and disable the fallback DSP driver again:
``` cat /etc/modprobe.d/with-sof.conf # play sound without the SOF firmware (this is the kernel's default) options snd_intel_dspcfg dsp_driver=0 ```With SOF, I was able to see the onboard DMIC microphone, but the microphone does not have any input signal. (And yes, I know how to enable/use microphones on computer, with and without pulseaudio).
I then found a post on the SOF project's upstream bug tracker, that provided me with a work-around solution and I wonder if the related fix might be a bullseye-pu upload candidate:
The work-around is presented here: https://github.com/thesofproject/linux/issues/2460#issuecomment-779212719In a nutshell, a binary blob is offered there to replace the file sof-hda-generic-2ch.tplg in firmware-sof-signed.
After a reboot, with that firmware file replaced, the onboard DMIC works and has become usable.
The related upstream PR is: https://github.com/thesofproject/sof/pull/3847The PR never got applied, as it got closed when upstream's master branch got renamed to "main". Noone ever cared for reopening that PR.
To clarify the situation, I pinged the PR submitter and upstream via: https://github.com/thesofproject/linux/issues/2460#issuecomment-898423772It would be awesome to get a fixed firmware-sof version (which then also works for the Lenovo Thinkpad 13S) into Debian 11.1. Let me know if I can assist with anything around fixing this bug. Thanks.
Thanks+Greets, Mike -- DAS-NETZWERKTEAM c\o Technik- und Ökologiezentrum Eckernförde Mike Gabriel, Marienthaler Str. 17, 24340 Eckernförde mobile: +49 (1520) 1976 148 landline: +49 (4351) 850 8940 GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22 0782 9AF4 6B30 2577 1B31 mail: mike.gabr...@das-netzwerkteam.de, http://das-netzwerkteam.de
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