haha2k wrote:
The MBP in clamshell mode and the Mac Studio are less than a foot apart, both having the latest Tahoe OS. I have 2 desktop monitors one connects to the MBP through the Displayport and the other connects to the Mac Studio through the Displayport as well.
The magic keyboard and the trackpad are connected to the Mac Studio.
When the universal control works, it works perfectly. Copy and paste, drag/drop files, mouse/keyboad transition between screens seamlessly, but every hour or so the keyboard and mouse would stop responding, sometimes it quickly resolves and the connection resets by opening the laptop, other times, I have to open the Display settings on both machine and clicking on the Arrange button to get the machines to see each other again.
I have suspicions the iphone may be the culprit but it's not consistent. Has anyone experienced something similar?
verify your software is up to date—
The current stable release of Tahoe including bug fixes, security updates is macOS 26.1
Keep your Mac up to date - Apple Support
Keep your Mac up to date - Apple Support
The current stable release of iOS including bug fixes, security updates is iOS 26.1
Update your iPhone or iPad - Apple Support
To be proactive you can file a bug report / submit your Apple Feedback here: Product Feedback - Apple
see if there is anything here—
External display not detected after macOS Tahoe update via HDMI
External display not detected after macOS… - Apple Community
How to use Clamshell (closed laptop) mode with a Macbook and external monitor.
Make sure the external keyboard, mouse, power adapter, and external monitor are connected to your Mac.
Make sure your Mac had POWER.
Close the lid of your laptop.
Keep the lid closed, press any key on the external keyboard to wake your MacBook/Pro from sleep.
ref: DISPLAY PORTS: COMPARING HDMI, VGA, DVI & DISPLAYPORT CONNECTIONS
https://eshop.macsales.com/blog/75926-display-ports-hdmi-vga-dvi-displayport/
