I have Dell S2471DG Monitor as a secondary monitor for my MacBook Pro M1 14". It worked fine until yesterday. Now when I close the lid the second screen continues working, but the mouse clicks not. When I reopen the lid I am seeing that all clicks acted on the MacBook Pro screen.
MacBook Pro 14″, macOS 12.2
Hi tariku,
Thank you for using the Apple Support Communities. We see you're having some issues with your mouse and a second display. We have a link with some steps that might be helpful If your external display isn't detected or appears blurry on your Mac.
"Check your cable or adapter
Disconnect the cable from your external display from your Mac, then reconnect it. If the cable from your external display doesn't connect to the ports on your Mac, you can use a Thunderbolt 3 or USB-C adapter."
If this doesn't help, try setting up a temporary administrator account on your Mac and see if you can replicate the issue there. That will help to narrow the issue down: Set up users, guests, and groups on Mac
We hope that helps. Let us know what you find. Take care.
Mouse problem using second display
