parsimon comments on Why does Linux have such a terrible sleep?

Why does Linux have such a terrible sleep? (programming.dev)

submitted 2 days ago by onlinepersona@programming.dev 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?

[–] parsimon@programming.dev 14 points 2 days ago (9 children)

I recommend using hibernate (suspend to disk): your computer will "sleep" for 10 years without draining. The only cost is about 7 seconds to boot on modern hardware. For short interruptions with instant wakeup, you can still use light sleep states.

It combines perfectly with LUKS-encrypted root and swap partitions: your data is safe even if someone steals your computer and swakes it up.

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[–] Quailman@lemmy.world 5 points 2 days ago* (2 children)

Hibernate doesn't work with secure boot/kernel lockdown for $REASONS, a lot of folks can't even use it. Supposedly if Linux can determine you're resuming from an encrypted partition it will work, but I was never able to get it to work with a swap file on BTRFS on LUKS

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[–] parsimon@programming.dev 2 points 2 days ago

True, kernel developers should resolve the Secure Boot issue with hibernation, but the development focus is on servers, not laptop computers. Also, hibernation should probably use a dedicated hibernate image file instead of requiring a huge swap partition. That being said, it works regardless of hardware capabilities if you turn off secure boot and just configure a LUKS-encrypted SWAP partition. You should figure this out before you install the OS.