There is a limit to how much a button that has a lid over it can blink. But it does not seem to be blinking now, and my laptop lid is closed. However . . (sarcastic drum-roll), I am unsure that laptop is sleeping. I could test that via battery drain. Actually: come to think of it, I wrote a script that reports upon sleeps. So . . the script reports that the computer was asleep. That is good. The reason I worried was that some days ago the lid had been closed for a long-ish time and suddently the fans started going loudly. (Since then, I’ve updated the Linux firmware. There’s no guarantee that that will have fixed the problem, though.)
EDIT: but the commonest problem-to-do-with-sleep that people report on this forum is, I think, not that the thing doesn’t sleep at all, but that it wakes up at the drop of a hat.
The side LEDs are for power indicators only it seems.
Right. Thanks.