If your Razer Book 13 has no sound on Linux, it’s probably the digital mic detection. This grub flag fixes it. Update, reboot, done.

First, open the grub config file:

sudo vi /etc/default/grub

Find this line:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

You need to change it to match the following:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash snd_hda_intel.dmic_detect=0"

Then:

sudo update-grub

And finally, reboot. After you log back in, you should see your audio devices when running the aplay -l command.