You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

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

Folder and application windows don't span both screens?

I just plugged a secondary monitor into my new iMac (21" Retina display, Mojave), and noticed a couple of changes in screen behavior, going from my old Mac Mini (El Capitan) to the new iMac.

First, about the menu bar: the old system has one only on the primary screen. The new one has a menu bar in whichever screen received the most recent mouse click, and a "ghost" menu bar in the other screen. Not a problem, but can anybody tell me more about that?

The other change is that I can apparently no longer have an application span both screens. Now, granted, the auxiliary screen is not "Retina" resolution (it's a ViewSonic VA912b, 1280x1024), but is that the only reason for the inability to have a window span both screens?

iMac 21.5" 4K, macOS 10.14

Posted on May 13, 2019 2:10 PM

Top-ranking reply

Barney-15E

Level 10

115,954 points

Posted on May 13, 2019 4:01 PM

Mission Control System Preferences

Uncheck Displays have separate Spaces.

View in context

Folder and application windows don't span both screens?

Similar questions