Clamshell mode doesn’t work on my MacBook Professional (M1) operating macOS 12.5 (Monterey)

I’ve had this drawback since I first purchased the Macbook, and I am nonetheless having this drawback after messing round with sure settings.

I am operating macOS 12.5 (Monterey), a 14-inch 2021 mannequin, with the Apple M1 Professional chip:

I’ve a large AOC monitor, related to my laptop computer through HDMI:

MacBook Shows

I disabled the facility administration choices that may flip the show off – I set it to by no means. I additionally tried setting it to by no means, even when the macbook is unplugged and plugged. Each time I join my laptop computer to the monitor and shut the lid, the laptop computer locks and the monitor gives a "No sign" message.

I additionally wiggle the mouse, and press keys on the keyboard in an try to wake the machine, but nothing appears to work.