Unable to get 2021 iMac to mirror my 2021 MacBook at 4480 x 2520

I used to be able to mirror my 2021 Macbook Pro to my iMac in Retina (4480 x 25200), power went out now the iMac can only mirror at 1920 x 1080 and Retina (4480 x 25200) isn't even an option. I've restarted and tried to reconfigure for hours and I'm stuck.

iMac 24″, macOS 15.3

Posted on Mar 26, 2025 12:16 PM

Similar questions

Screen Mirroring M1 Macbook to Intel iMac I'm trying to screen mirror between a 2021 Macbook (M1 chip) and 2019 iMac Retina 5k (Intel chip). The mirroring works from the iMac to the Macbook fine. But it won't work in reverse. The Macbook won't recognize the iMac as a device to mirror to. The best Apple support could come up with was that it might be due to a difference in the chips. Has anyone experienced this and found a solution?
3628 4
Problem with screen mirroring I have problems with screen mirroring. Does anyone know if the problem is that my MacBook is too old, and that is why it's not working? So I am trying to screen mirror between my iMac which has macOS Monterey version 12.6 and my MacBook which has macOS Big Sur version 11.7. I have just uptated both and restarted them. Both are in the same wi-fi network and bluetooth on. My MacBook has the screen mirroring option but I just can't mirror the screen between these two. I was able to use my iPad to mirror with my iMac. Is the problem just that my macbook is a lot older than my imac and that's why it's not possible, or what might be the problem?
2499 2
MacBook mirrores my iMac I bought a MacBook Air. when I set it up it automatically connected to, and mirrors, my iMac. I don't want that to happen. can I change that and set it up as its own device?
537 4

1 reply

a brody

Level 10

85,296 points

May 6, 2025 6:30 PM in response to Jacobromeo

Try using Screen Sharing:

Turn Mac screen sharing on or off - Apple Support

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Unable to get 2021 iMac to mirror my 2021 MacBook at 4480 x 2520

Welcome to Apple Support Community

A forum where Apple customers help each other with their products. Get started with your Apple Account.

Learn more Sign up