System and Network configuration • Cannot wake after sleep

0. After intalling bookworm with default kernel, when I close my laptop lid and disconnect the charging cable, the battery will drain within a few hours. It seems the machine is not "sleeping" at all.
1. Switching `/sys/power/mem_sleep` to `[deep]`. After this, when I close my lid, the laptop will freeze with blank screen and keyboard light on, I have to "hard power cycle" by keeping holding power button for some seconds, and wait for the boot.

The default setting is probably not "sleep" at all, but "Modern Standby" aka S2idle or S0ix. Modern Standby is a Microsoft thing, and plenty of Microsoft users are complaining about battery drain (and overheating CPUs) while using it.

For example:

https://www.reddit.com/r/GamingLaptops/ ... in_modern/

Laptop manufacturers may aim for the Microsoft market and only support Modern Standby, or advertise (ie in /sys/power/mem_sleep) deep sleep but not support it, so the laptop may not wake up from deep sleep.

https://wiki.archlinux.org/title/Power_ ... end_method

If deep (S3) sleep is not supported, you won't be able to use it, and it looks like it isn't on modern Asus laptops.

https://rog-forum.asus.com/t5/previous- ... d-p/892199

Have you tried S0ix with an updated kernel from Debian Backports? It may have improved power management in sleep. (The Sid kernel may also introduce bugs.)

Statistics: Posted by FreewheelinFrank — 2024-10-22 06:08 — Replies 1 — Views 48

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