System76 edits firmware to enable S3 sleep on their machines. S3 sleep uses less power than Modern Standby.

I've heard this isn't possible on AMD unfortunately.

I'm on an AMD machine that System76 wrote the firmware for, and they specifically wrote in S3 sleep functionality despite the base firmware missing it.

Hopefully it can find it's way to Framework.

The firmware vendor contracted System76 to develop the feature specifically for Linux compatibility.

I'm unaware of how much access Framework has to the underlying firmware blobs. If they don't have source/license/keys/etc for the right parts, they might be at the mercy of their own vendors for S3 support.

Do you have a source for that? The only thing I've found is S3 sleep under coreboot, which only applies to intel.

These[1] have S3 sleep enabled in their firmware thanks to System76.

[1] https://hpdevone.com/

That's cool, but the 5850u is from 2021, around the time Microsoft started pushing hard for modern standby. Other laptops of that generation also have a S3 bios setting: https://www.reddit.com/r/GamingLaptops/comments/yvpae5/to_al...

The oldest AMD chip framework sells is two generations, and to me knowledge don't have S3 support.

I believe they mean it lasts 14+ hours in sleep.

No, in work mode. I'd keep using it if not for the keyboard (kept messing PgUp/Left and PgDown/Right).