Thinkpad X1 Carbon gen11 - suspend not work

[Oleksandr Kryvulia]

Hi,
I have Thinkpad X1 Carbon gen11 where s3 is not available:
# sysctl hw.acpi.supported_sleep_state
hw.acpi.supported_sleep_state: S4 S5

FreeBSD 15.0-CURRENT #47 main-n265480-95a4709b2cca-dirty, latest 
available bios.

What can be done to investigate?