My Pinebook Pro.

[KC9UDX]

I'll have to look into that. I thought my PBP was noly partially sleeping, but I just realized that it stayed powered up for the last couple of days as it kept an IRC connection open. So it looks like it's not doing anything when I close the lid. I will check out the magnet location bit, though, thanks!

You can verify if yours is in the wrong place with a small magnet.  You should be able to reliably "sleep" the machine by placing the magnet somewhere to the right of the power and backspace keys.  (Sorry, I don't know the exact location offhand.) Then compare that to what the machine does with the lid closed.

I find (and several others have reported) that if the lid is open just a few degrees, the magnetic field lines up and the machine thinks the lid is closed.  Any more closed than that, and it thinks it's open.

[wdt]

Even easier, If NOT sleeping, display comes back instantly
If sleeping, a 2s pause, then mouse cursor, 4s pause, login screen

[KC9UDX]

The external magnet is needed though to prove that the switch is working as intended. Else the magnet position might not be the culprit.