Another question will be whether your macbook pro can actually support a 4k device at full resolution.
Macbook pro displayport adapter not working.
C to displayport cable or adapter.
The external monitor is detected but no image is shown.
I bought 2 new macbook pro 13 2 9 ghz intel core i7 with 8 go 1600mhz ddr3 intel hd graphics 4000 512 mb mac os x lion 10 7 4 11e2617.
Definitely make sure you use a true thunderbolt cable with a thunderbolt icon on it and not a random old mini displayport cable with a rectangular monitor icon.
A bit ago i purchased myself a macbook pro 15 2016.
Mini displayport is not the same as thunderbolt or.
If your display has more than one video connection see if using another connection on the display works.
I have tried re plugging the mini dvi display port adapter and have tried using a different monitor with a different monitor cable.
If possible check to see if using a different display or a different adapter works.
They have the same connector shape but not the same capabilities.
This is the correct solution for the apple led cinema display.
For example a mini displayport to dvi adapter can t be connected to a dvi to hdmi adapter.
It was working fine a few hours ago at work i got home and plugged in the external display as usual and turned on the machine and nothing.
It was a usb c to displayport adapter after which i used a displayport cable to connect it to my external uhd monitor philips brilliance 288p.
Try using a different cable that you know is in working order.
A 61 watt power adapter.
The macbook pro was running sierra as operating.
Check with its manufacturer for compatibility with your mac and display model.
I purchased an adapter so i could connect it to my external monitor which functions perfectly.
Using the detect displays does nothing.