I found a problem with the BIOS of my 3rd batch X210. I tried to enable L1 substates to greatly reduce power consumption of my NVME ssd. This is in
Chipset -> PCH-IO Configuration -> PCI Express configuration -> PCI Express Root port 9 -> L1 Substates
When I enable L1.1 or L1.2 my NVME SSD disappears. Is not visible by Linux or Windows install media. I tried a 1Tb Samsung 970 Evo NVME and a 1Tb Crucial P1. They both have this problem. If I disable L1 substates they work fine, but waste a lot of power and my battery lasts 2 hours less than with a SATA drive.
This also happens with BIOS 190111. Is there a solution?