Hi, I am using a Gigabyte GA-Z77X-UD5, i7 3.5, GTX 660 TI (2GB) with dual Yamakasi (2560x1440) and El Capitan 10.11.4
To enable dual display on El Capitan 10.11.4, use Clover Configurator (
http://mackie100projects.altervista.org ), mount the EFI partition, open the EFI partition, on the partition double click the file "config.plist" on \EFI\EFI\CLOVER directory ( will open the Clover Configurator ). Click on the "Graphics" tab on left side, them uncheck the "Inject Nvidia" box. Close/save and restart your computer.
The "About this mac" now will identify 2048 MB on Graphics board, and will detect 2 displays.
PS: Im not using the nVidia Driver Display.
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*** Uncheck the "Inject Nvidia". Bellow is the WRONG setup.
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