MBP 16" / Catalina: sleep stuff?

[PhilippVH]

Just upgrading from 2011-MBP-13" (High Sierra / 10.13) to new MBP 16" (Catalina / 10.15 of course).

Currently running with external TB-3 display (LG 5K). Under power saving settings:

• Where can I set the time-to-sleep for the machine? The slider bar I've used for ages is just not on the screen…
• And why does the machine not switch-off the display at all, even when I set it to "after 1 minute"?
  (Was working perfectly fine on old machine (via TB1-TB3 adaptor) and for either internal / external displays or both.

Is this upgraded behavior? Or any known issues?

 

[PhilippVH]

Okay, found some hints, e.g. to use pmset. Investigating.

But this is really strange?
displaysleep 1 (display sleep prevented by Music)

Found a hint, it's related to AirPlay being used. At least closing Music fixes this.

Was working with iTunes for 1.5 decades or so… I mean: putting the machine to play music and save power on the screen. Without that, I don't think, using a Mac for background playing is a good option…?

 

[PhilippVH]

Manual display sleep (Ctrl-Shift-Eject) seems to work at least…