Here is a step by step guide I found: https://www.sysorchestra.com/setup-soundcard-and-microphone-on-lenovo-thinkpad-x1-carbon-7th-gen-with-linux-mint-19-3/
Here is a step by step guide I found: https:/ /www.sysorchest ra.com/ setup-soundcard -and-microphone -on-lenovo- thinkpad- x1-carbon- 7th-gen- with-linux- mint-19- 3/