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!
oklhost
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
From
Hamburg, Germany
Post
Replies
Boosts
Views
Activity
@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.
Same here, no one seems interested doing this except us lonely wolfs...
Really? It only me who is interested running higher resolutions on 13“ MacBooks?!
Yep, thats very annoying. Same on M1 MBP, MBA and MM. Looks like Apple will take a bit more freedom of us. Glad we're still allowed to use the computers we paid for.
Seems fixed in beta 7! :)