Mute button grayed out

My mute button is not working and i just cant figure it out. Does anyone know why is it grayed out? Im using appleALC kext with layout id 17

Laptop: Dell Latitude 7490

https://preview.redd.it/0o6wyr1k3ccd1.png?width=727&format=png&auto=webp&s=9bd440ef3750798a77729b524df5fd51ea7eefb9

https://preview.redd.it/74zssyck3ccd1.png?width=369&format=png&auto=webp&s=6c1d87ea769b509e5e952c9279329ef4160831dd