Thinkpad X1 Carbon gen11 - suspend not work

From: Oleksandr Kryvulia <shuriku_at_shurik.kiev.ua>
Date: Thu, 05 Oct 2023 08:00:35 UTC
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?