So, I read up on the kernels power states. s2idle is a pure software solution and comparable to Windows Modern Standby (but, because it's purely software not exactly), but it always works. shallow is mapped to ACPI S1. Modern CPUs from Intel (and probably AMD, but I wasn't able to find anything about it for them) only support S3 these days. deep is mapped to ACPI S3. While modern CPUs support it, modern motherboards and at this point including BIOS don't support it anymore (yep, some OEMs even removed the code for it). So, shallow and deep are pretty much dying out these days. Linux can't really do anything about that. Am 01.08.23 um 13:43 schrieb cagsm:
I only have s2idle in there on the new laptop machine, and I have already tried to make sense of this and where the advertised features originate from and become populated. apparently this new laptop machine does not offer suspend-to-ram
Sincerely Kilian Hanich