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Why does Linux have such a terrible sleep? (programming.dev)
submitted 9 hours ago by to c/linux@programming.dev
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In 8 hours it uses 20% of the battery. When Windows or Mac are put to sleep, the damn things can sleep for a week! This is the case with Linux on multiple laptops.

Is there some kind of manipulation going by ring -1 that detects Linux is running? Is Linux not respecting some procedure and kissing a step?

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[–] 2 points 3 hours ago (2 children)

This is the one I was going to link.

I have my laptop in s2idle mem_sleep most of the time because this boots quick and allows me to wake the computer by pressing a key on my USB keyboard plugged into a hub plugged into my dock into my laptop.

And it gets from my office and back just fine on that. But if I'm traveling or something I'll switch it to deep mode before I leave so it actually actually goes to sleep in my bag.

It takes extra time and jank to boot, and I have to wake it up by opening the lid, but if I'm traveling that's normal since I don't travel with my dock or USB keyboard anyway.

This is one of those cases where it would be nice if the tech always did what I wanted, but I do actually want different things at different times, and so I do actually benefit from the control of being able to choose.

My hardware doesn't support "shallow" sleep, for whatever reason.

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  • [–] 5 points 3 hours ago (1 child)

    The reason is, as usual, that Microsoft lobbied hard to make their way the standard way of doing sleep modes. Then, when implementing it, they strong armed all the OEM to make hardware fit their nonstandard, slightly off center, way.

    So, now windows kind of work with all hardware, but open source is fucked because to make the hardware actually work requires reverse engineering whatever custom crap windows does.

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  • [–] 2 points 2 hours ago

    The sleep stuff is part of the ACPI standard, it's all documented.

    It's up to the motherboard/SoC to support it properly, and Microsoft has an "entire system view" of how Windows works and can integrate it deeply. Compare that to Linux, the companies involved mostly care about servers, and the distros are assembled by disparate groups that don't have the hardware testing capability that MS or OEMs have.

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