Studio Display shows 3 pulsing dots then turns off

Make sure it's plugged into the display's Thunderbolt port, not one of the USB-C ports. I saw this on a forums.macrumors.com and it worked for me!

Are you using the Thunderbolt cable that came with the Studio display? If not are you using a certified Thunderbolt 3 or higher cable? Is the cable securely inserted in the ports at both ends?

Other than that, use your last resort.

Hi,

I had the exact same issue just now: three little flashing white dots when I tried to connect my 16" Macbook Pro to my Studio Display (this, after not connecting to the display for some months). T

I tried power cycling the Display; nothing. Then I tried re-starting the laptop - result. Now, I got a small dialog on the MacBook asking me "Did I want to allow an accessory to connect?"

The dialog didn't mention the Display, as such (it just said "an accessory"). And I don't know what process spawned the dialog. I quickly hit "Allow" on this dialog, and the Display then connected fine.

Apologies that this isn't a fix, as such. But I guess what is salient is that, for me, the dialog only appeared when I power cycled both the MacBook and the Display at the same time, with the Display connected to the laptop at all times.

Hope this helps!

Stu Jackson

I’m having the same issue. Any solution? @maxitiger99