why can't I use the screen split in Mac mini ?
I update my Mac mini (mid 2011, i7 8G ram) to the El Capitan.
I can't use the screen split but I can use this function in my Mac book pro ~2009 or 2010.
why is that?
Mac mini
Do you have the right boxes checked?
But wait! You may be thinking, I don’t even have multiple monitors. What does this have to do with me? Well, it appears that Apple is leveraging some technology or process from this “Displays have separate Spaces” feature because it must be enabled, even on Macs with only a single display, in order for Split View to work.
Also see rest of:
http://www.tekrevue.com/tip/split-view-not-working-os-x-el-capitan/