MBP clamshell mode in battery mode

[Sptzz]

Hi all,

I've been using my M3 Max MBP in clamshell mode for almost a year now, it always worked plugged and unplugged but today, for some reason, I removed the charger to loan to someone and the monitor turned off. I grabbed the laptop opened it up and monitor came alive normally, if I close the laptop it goes again, essentially as if it's force sleeping. I've never seen this issue before, also been using Al Dente since that time.

Any ideas?!

Thanks!

 

[FreakinEurekan]

Current behavior is as expected. Clamshell mode requires:

1. External display
2. External keyboard
3. External mouse or trackpad
4. Power

Why had it been working differently before? ¯\_(ツ)_/¯ it’s “fixed” now.