I've got an HP Chromebook 11 that's been jailbroken and running #NixOS  perfectly.... Except audio. Just shows no device and headphones don't work either. 

I checked NixOS hardware and didn't see anything.  Seems like a hardware thing. Like #linux kernel params. 

Anyone have any ideAs?

https://cdn.fosstodon.org/media_attachments/files/113/433/275/529/268/900/original/4c1be72043dc95a4.jpg

https://cdn.fosstodon.org/media_attachments/files/113/433/275/757/832/218/original/ba96132552ef2945.jpg

https://cdn.fosstodon.org/media_attachments/files/113/433/276/067/728/238/original/c0de0871132f5fab.jpg 

 https://dj1ch.github.io/nixos-chromebook/

Came across this, no idea if it will help, but maybe?