Comment 12 for bug 1867803

Oh, it is a coffeelake machine. We don't support it yet. You could have a try with "sudo ln -s /lib/firmware/intel/sof-cnl.ri /lib/firmware/intel/sof-cfl.ri", then reboot. If it doesn't work, you could raise an issue on this website, maybe Intel could recommend the correct kernel and firmware. https://github.com/thesofproject/linux/issues/new