this post was submitted on 14 Jul 2025
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Why is sleep so hard for laptops? (lemmy.world)
submitted 3 days ago by squaresinger@lemmy.world to c/linux@lemmy.world
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And it's crap across the OSes. On Linux laptops don't wake up from sleep, on Windows they keep waking up when nobody asks for it.

In our home office room there's three laptops. My private one running Fedora, my work PC that sadly runs Windows and my wife's laptop also running Windows.

My work laptop and my wife's laptop keep waking up wasting electricity, and my private laptop needs a hard reset to wake it up every second time.

That feature should be stupid simple, yet it doesn't work across the board.

Rant over.

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[–] Tikiporch@lemmy.world 5 points 3 days ago (2 children)

Are you talking about sleep, hibernate, or monitor off?

[–] squaresinger@lemmy.world 4 points 3 days ago

Sleep and hibernate don't work for me.

Hibernate just acts like a power loss. After shutting down the state is just lost and the laptop starts up with a fresh boot.

With Modern Sleep, kernels 6.11+ go to sleep fine, but don't manage to wake back up. The keyboard lights up for half a minute, the fan goes on, the screen stays dark and after half a minute the laptop goes back to sleep. Kernel 6.10 sometimes works, sometimes behaves like 6.11+. I'd say it works 80% of the time.

I disabled Modern Sleep in BIOS and tried to enable S3, S2 and S2+S3 in BIOS instead. I set the corresponding sleep states in Linux as well, and no matter which one of the non-modern-sleep options I try, and no matter if I'm using kernel 6.10 or 6.15, it never manages to wake up (same symptoms as above).