Lenovo ThinkPad X1 Carbon 3rd generation

These are my notes on getting Gentoo fully functional on the Lenovo X1 Carbon, 3rd generation.

Kernel
In order for suspend / resume (particularly the resume) to work properly, you must enable the following: Device Drivers -> Character devices ->  TPM Hardware Support ->  TPM Interface Specification 1.2 Interface / TPM 2.0 FIFO Interface