Originally Posted by
DCW1000 I see the same Standby S1-S2-S3 and Hybrid Sleep S3 unavailability that you have, but on my new SP the "Standby (S0 Low Power Idle) Network Connected" classification is listed as available above Hibernate. That seems to be the state I default to from the Sleep option on the on-screen power button, and when I fold the type cover over the screen or press the physical button.
Same for mine... Low Power Idle available.
When I initially set it up, I did have to go into the additional power settings (the old settings, not the new settings) to set the sleep mode (I think, going on memory from a month ago, but I'd check that).