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73416ba
(Get the code!)
@Dariusz,
You said "The situation is different on impish - on this release the mic is available out of the box.". I remember the impish doesn't install firmware-sof-signed package out of box, so the the sof-cml.ri is still provided by linux-firmware of impish, and the sof-cml.ri in is impish is identical to the sof-cml.ri in the focal.
If so, I guess this is not an issue on the sof-firmware, maybe it is an issue on the kernel of 5.4.0.
So could you confirm the mic could work under impish without the firmware-sof-signed package? And could you upload the complete dmesg under focal with the original sof-firmware in focal?
About the bionic, I am afraid we couldn't make the mic work under it. To make the mic work, not only needs the kernel and sof-firmware, also needs to upgrade the alsa-lib, alsa-ucm-conf and pulseaudio.