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Windows PCs can't sleep properly, and Microsoft wants it that way
(www.spacebar.news)
This is a most excellent place for technology news and articles.
Linux supports s2idle/s0ix just fine, though I guess it will depend on hardware like suspend always has done. I have a laptop which only supports s2idle and it almost always works fine. (There are issues in Windows too though).
However, it is still very crappy, because there was never anything wrong with S3. It comes up in a second, and the battery discharge rate is low enough to leave it suspended for days without worrying. The latter feature is actually important - coming in 0.1 seconds as opposed to 1 is not important.
That's the point of this article and my comment though. Newer machines are having these options removed because of pressure from Microsoft. It's a crapshoot.