[usefulcat]

No, from the time I bought it last year I never changed the resolution until I noticed the notch was gone and was trying to get it back, but to no avail. I also don't have anything unusual installed, definitely nothing display-related. It's pretty much as I received it from Apple, modulo whatever updates have been released since then.

Currently it's set to 1710 x 1107, which is labeled "Default", and no notch. When I look closely at the right angle I can clearly see the notch dipping into the screen, but the OS does not use any of the area to either side of the notch--it's completely dark there.

Just now I ticked "Show all resolutions" and tried at least a dozen other available resolutions and none of them use the screen above the notch bottom. Sonoma 14.6.1, 15" M3 Air.

[rafram]

OK, I have no idea what setting you could have set, but this is not stock behavior on any MacBook with a notch.

[culopatin]

That’s not normal. Are you sure you don’t have an app that’s doing that or toggled a setting in so,etching like Onyx and forgot?

[usefulcat]

Quite sure. SyncThing and mosh are the two most unusual apps that are installed. And I've spent a fair amount of time researching to find out what setting could cause this. The only thing I've found that could supposedly affect the notch is the display resolution, and changing that makes no difference for the notch.

One thing that did occur to me though is that it was a 'refurbished' MacBook. Bought it from Apple, and it looked brand new, but it does seem possible that someone could have done who-knows-what to it before I got it. Or perhaps there is some defect in the display near the top and Apple did this intentionally to conceal it.