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I don't think this is even S0 suspend. At least a few year ago thinkpads have already moved to something called IRST, Intel's "suspend to SSD after sleeping for

by xfs 8y ago

I don't think this is even S0 suspend. At least a few year ago thinkpads have already moved to something called IRST, Intel's "suspend to SSD after sleeping for several hours" at firmware level. See https://mjg59.dreamwidth.org/26022.html https://mjg59.dreamwidth.org/26022.html for details. I actually got it working with the latest kernel at that time but didn't feel comfortable using it because of all the horror stories with firmware level shenanigans.

1996 8y ago
this is something else. IRST was Intel custom implementation, back when S0 did not exist. It required a custom partition. IIRC, suspend to disk when battery runs out is now one of the standard S0 features. At the OS level (windows 10) there is a telemetry to check the depletion rate, and initiate suspend to disk when the rate is too high or battery is too low. Check the logs made by microsoft powercfg, they are very informative and will help you reach power savings close to what S3 allowed. But I need that to work in Linux too, and last time I checked it wasn't as good.
- beagle3 8y ago
  > At the OS level (windows 10) there is a telemetry Nitpick: "Telemetry" means "measurement far away". Does this get sent to microsoft ("tele") or is it just a measurement ("metric")?