M4 Mac mini running macOS sequoia 15.2 using a Sony Bravia 9 for the monitor. Screen mirroring is stuck ON and it will not allow it to be disabled. The M4 Mac mini is plugged in using the HDMI output. This problem did not exist with macOS sequoia 15.1 with the same setup. Is there a fix for this problem?
Mac mini
I, too, had this same issue, and Apple Support stated to then have my OS to be reinstalled.
It took a while to try to narrow this down, but using the Better Display Pro software, I was able to find that my role for my TV was already set as a Computer monitor. And before this the System Information stated that the display is a Television.
So, using the software above, I set it to Television, nothing happened, but then changed to Computer monitor and then the Screen Mirroring finally went away.
I've rebooted to make sure it was persistent, and it's still gone, which is great.
I think the update must have seen that, yes, there is a TV plugged in, the update probably configured it as a TV, even though it was slated as a Computer monitor on 15.1, got a configuration mixup, and caused it thinking that it was in perma Screen Mirroring.
Quite annoying, but it's all good now.
Every time I change inputs, when I go back to the input my Mac mini is on, the input resets back to video mode instead of the PC mode I set it to.
I don't think I have noticed that with my M1 Mini.
I'm also having the same problem on a M2 Max Mac Studio plugged into a 43" Dell monitor - it's not even a TV, but maybe the "bug" is any screen over a certain size? Super annoying.
I have the same issue. I have 3 displays, one of which is the HDMI connection to a 4k TV. I have to reset the display parameters after every boot up. Something is seriously broken in the .2 update!
I have the same problem with Mac mini M4 and a Samsung S90C
Same problem here I have the M4Pro hooked to a 55" Samsung TV and screen mirroring to itself its my only connection to the Mac M4 Pro MacOs 15.2 update..... 15.1 was fine no problems
Just off the phone with apple support no help,Said they have not heard of it but they are even post on reddit,,,ugh
I wonder the same thing is it sharing my screen to a neighbors ? ugh
I have the same problem with my m1 max and my phillips c1 monitor since yesterday's update. I can use the display as such but it now seems to be delayed.
Same problem here with Mac Mini M2 and HP Z38c ultrawide monitor
Crazy. Every time I boot up the computer, the OS forgets my monitor setup. Have to redo everything from arrangements to resolutions! I sincerely hope Apple addresses this soon.
*gone
This has also worked for me, I was using a smart TV as a monitor for my M4 Mac Mini
it is showing my 65inch LG OLED TV as 72inch.
MacOS 15.2 screen mirroring stuck on when smart tv is used as a monitor.
