I usually use my Mac in clamshell mode, but after updating macOS yesterday, I came home from work today and suddenly clamshell mode isn’t working. Why is this happening? any solution?
MacBook Pro (2017 – 2020)
I finally figured out the solution: reducing the refresh rate from 60 Hz to 50 Hz in the monitor settings.
I am not sure why I need to adjust refresh rate in order to 're-activate' the clamshell mode.
Anyway I guess this could be the another option to try whoever having same problem as I did.
P.S. I updated my MacBook in clamshell mode overnight. I don't carry it around, it just stays on my desk like that. I didn't change any monitor settings.
Serendipity_ wrote:
I changed my refresh rate setting and it worked.
It’s hard to tell whether this is an issue with the new operating system or just a one-off glitch.
Good computing Serendipity_ ! Appreciate your follow up to the issue.
I changed my refresh rate setting and it worked.
It’s hard to tell whether this is an issue with the new operating system or just a one-off glitch.
Serendipity_ wrote:
I usually use my Mac in clamshell mode, but after updating macOS yesterday, I came home from work today and suddenly clamshell mode isn’t working. Why is this happening? any solution?
So this is a new issue with Tahoe—
To enable MacBook clamshell mode, you must connect your MacBook Pro to an external display, a power adapter, and an external keyboard and mouse.
Did you try all variations, different cable connection, different port, etc...(?)
FYI, clamshell mode is working normally on my M4 Pro MacBook Pro with Tahoe.
Any chance you’re relying on DisplayLink to drive your display(s)?
thanks for your tips
I think refresh rate was the problem
I just updated macos tahoe yesterday, and now the clamshell is not working
