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Strange issue with two displayport monitors


damigr
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Hi.

 

Here's is my actual configuration :

- two monitors : U28E850R & U28E590D

- ASUS X99-DELUXE/U3.1

- Gigabyte Geforce GTX 980Ti

- Clover SMBIOS MacPro5,1

 

Here's is the situation :

 

When I boot the system OSX with two monitors connected, i have a black-out on two screens.

When I boot with only U28E590D connected, the systems start perfectly !

When I boot with the U28E590D connected and power-on U28E850R only when the progress bar appears, the two monitors has recognized !

When I boot with the U28E590D connected and another monitor (HP ProDisplay P222 VA), the systems start perfectly with no problems !

 

Where's the trouble ?!!! :worried_anim: Do I send the U28E850R on SAV ?

 

Here's my actual EFI & IOREG : https://www.dropbox.com/s/6knrau2z0d5cxi0/ioreg_efi_09032016.zip?dl=0

 

Thank-you !

 

 

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