I also have this exact model of laptop.
I have installed kernel 5.11 from https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.11/
Following a cold boot to Ubuntu, sound can be made to work via the workaround GPIO commands detailed in https://bugzilla.kernel.org/show_bug.cgi?id=210633#c13
The related patch to teach the kernel to do the necessary GPIO itself is https://patchwork<email address hidden>/
I also have this exact model of laptop.
I have installed kernel 5.11 from https:/ /kernel. ubuntu. com/~kernel- ppa/mainline/ v5.11/
Following a cold boot to Ubuntu, sound can be made to work via the workaround GPIO commands detailed in https:/ /bugzilla. kernel. org/show_ bug.cgi? id=210633# c13
The related patch to teach the kernel to do the necessary GPIO itself is https:/ /patchwork<email address hidden>/