@atie, yes, but it doesn't work with all displays e.g. the internal one. search reddit/mac for "your help is needed", not allowed to post the url here.

I have the same problem. I primarily use an LG 32UN880 on my Mac Studio M1 MAX, and a Dell 2515H as a second monitor. About a week ago I replaced the Dell with an LG 32UN880P and promptly encountered this problem. The 32UN880 always goes to sleep, the 32UN880P does not. The problem occurs via DisplayPort to USB-C cable, but via USB-C. The 32UN880P also has a MacBook Pro 13" M1 connected to it via USB-C, in addition to the Mac Studio, and the monitor does not go into standby here either. The screen is black, but the backlight stays on. It only helps to send the Mac into standby, as it has already been described by others here. I upgraded the Mac Studio to macOS Sonoma for testing, again the problem still exists. Could someone tell which log you are viewing? Thanks!