I had the same issues with x1c7. The most annoying one was the mic not working. I was really frustrated saying I should have gone for Dell. I read somewhere tha

I had the same issues with x1c7. The most annoying one was the mic not working. I was really frustrated saying I should have gone for Dell. I read somewhere that Ubuntu 20.04 solves some of the problems and it did! Everything works now - mic and fingerprint reader included. Maybe now that Lenovo will supply a Linux distro, other distros will be better supported on new models as well.