Comment 65 for bug 1958019

I have had the same problem since I got this laptop in late November. It is a Yoga 7i. I am on Ubuntu 20.10 with kernel 5.8.0.29. I have tried 5.9.10 and 5.9.12 mainline kernels.

Everything appears "normal" except the sound just isn't coming out of the speakers. It registers the card, shows up in pavucontrol as expected. The sound output indicator even shows as if audio is playing.

I have dabbled with development of kernel modules in the past, but know nothing about audio codecs. Let me know if you need any help from someone with the hardware and kernel experience.

It sounds like you may already know the culprit, but that it is not fixable without some specs.