Announcement: Upgrade to macOS Mojave

With features like Dark Mode, Stacks, and four new built-in apps, macOS Mojave helps you get more out of every click. 
Find out how to upgrade to macOS Mojave > https://support.apple.com/macos/mojave

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Question:

Question: Why has my external monitor gone black?

Just upgraded to High Sierra and it has caused my external monitor to go black. Only the mouse is visible on the screen. I am using a J5 Docking station on a MacBook Pro. What is the resolve for this issue?

iMac, Mac OS X (10.7.3)

Posted on

Reply
Question marked as Apple recommended
Answer:
Answer:

I recommend following the troubleshooting steps in this article from  support:

Get help with video issues on external displays connected to your Mac - Apple Support

Posted on

User profile for user: auroraambria

Question: Why has my external monitor gone black?