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A comment on Why does Linux have so much trouble sleeping and waking?. Parent comment

Re:Why does Linux have so much trouble sleeping and waking? by BHSPitMonkey on Friday December 11, 2020 @03:38PM (#25390662)
In the past 5 years, I've used ThinkPads for work (a T-series, X1 5G, and X1 6G); All of them mysteriously like to wake themselves out of sleep for no clear reason while closed and not connected to any external devices/power.

(If someone knows which log file will tell me the exact reason behind a mystery wakeup after it happens, please share!)

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Re:Why does Linux have so much trouble sleeping and waking? by exikyut on Friday December 11, 2020 @03:54PM (#25390857)
Enabling verbose ACPI debug messages might do it:

https://www.kernel.org/doc/Documentation/acpi/debug.txt

I'm not exactly sure what options you'd need to enable/disable to just catch useful info.

Hopefully you don't need to enable everything, which may produce enough (realtime) logspam to make journald use a noticeable amount of CPU.

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Re:Why does Linux have so much trouble sleeping and waking? by IronBacon on Friday December 11, 2020 @04:48PM (#25391589)
Maybe Intel Smart Connect?
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