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Comment by deepsun | Hacker News Reader

No, Linux is not the issue -- my System76 Lemur holds 14+ hours. Haven't used X1 Carbon for a while, but it also held way longer than Framework.

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As I understand it, the complaint isn't about battery life during usage. The issue compared to a mac is that I could close the lid on the macbook air m1 that I'm typing this on mid sentence, and then open the lid in two weeks, and have lost basically 0% battery.

I'm not sure if that's possible on windows. I know my work laptop doesn't work that way, but then, it probably runs all sorts of enterprise settings.

How long does it keep its charge in sleep mode? Weeks or days?

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).

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.

Um, more details? My Lemur has never lasted anywhere near this long, though it's a few years old.

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