Modern Lenovo ThinkPad UEFI: Sleep State

[jbo@]

Looking at the BIOS/UEFI of a Lenovo ThikPad Carbon X1 Gen 9 I see an option named "Sleep State" which allows choosing from two options:

• [Windows and Linux]: Optimized Sleep State for Windows and versions of Linux that are compatible with Suspend-to-Idle
• [Linux S3]: Optimized Sleep State for versions of Linux that are not compatible with Suspend-to-Idle

In case of FreeBSD 13.0-STABLE, which option would I want to choose? Does FreeBSD have support for "Suspend-to-Idle"?

If you guys can provide any other information regarding this I'd be thankful.

 

[grahamperrin]

S3, and cross your fingers.

acpiconf(8)

acpi(4)

Suspend/Resume to Disk - Hibernation - iFFS/IRST Partition (Intel Fast Flash/Intel Rapid Start Technology)

What is this and how does it work? On newer Intel-based computers, the UEFI/BIOS offers a switch to enable a iFFS/IRST partition to support suspend/resume. This is called "Intel Rapid Start Technology". It affects mainly mobiles (laptops & tablets), but also desktop and maybe server systems...

forums.freebsd.org

<https://forums.freebsd.org/posts/549574>

 

[bsduck]

Could this "suspend to idle" be S2?

 

[grahamperrin]

Could this "suspend to idle" be S2?

I think not. According to <https://forums.lenovo.com/t5/-/-/m-p/5111887> it is (or can be) S0ix.

<https://en.wikipedia.org/wiki/Advanced_Configuration_and_Power_Interface#Global_states>

Hint:

% sysctl hw.acpi.supported_sleep_state
hw.acpi.supported_sleep_state: S3 S4 S5
%

– this does not mean that the installation of FreeBSD will work with those supported sleep states.