Comment 10 for bug 1868319

@David,

Your machine is a coffeelake platform, there is no sof-firmware for this platform in the 19.10. you could use a workaround to let sound work with legacy hda driver: edit /etc/modprobe.d/alsa-base.conf, add "options snd-hda-intel dmic_detect=0", reboot.

Or you could manually symbollink a firmware for coffeelake: cd /lib/firmware/intel/sof;sudo ln -s cnl/intel/sof-cnl-v1.3-0f73628.ri sof-cfl.ri;reboot
If it still doesn't work after generating link, please upload the dmesg and upload the output of 'ls -la /lib/firmware/intel/sof'

thx.