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Boot failure since new R280X GPU

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Joined
Nov 27, 2010
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27
Motherboard
Gigabyte GA-Z68X-UD3H-B3, 16gb DDR3 1600
CPU
Intel i5 2500k
Graphics
Gigabyte R280X OC
Mac
Classic Mac
Mobile Phone
  1. iOS
My system is giving me some troubles since I upgraded my GPU form a 6870 to a R280X, plus 2 new screens (total of 4)

Let start by how my screens are connected.
First screen is connected directly to the onboard GPU (HD3000) by DVI.

Attached to the R280X I have 2 screens using a mini-display to DVI adapter , and 1ea on DVI.

When I set Default Graphics on my BIOS to Auto it does use the R280X as main, but this give me an error as soon as I OSX.
Same as this:

80090d1389790537-doesnt-boot-hdd-1389788055463.jpg

If I choose in the BIOS my onboard GPU as default then OSX starts without any problem. But with only 3 working monitors.
The onboard (HD3000) and two other screens attached to the R280X using the Mini-display to DVI adapter.
Screen that is connected directly to the DVI of the R280X is not working at all.

System is running with Multibeest. My BIOS works works with UEFI, but everytime I want to start OSX I need to choose the none UEFI SSD.


Does somebody know how I can start OSX even when Default GPU is at AUTO (R280X as main) and how I can I make the l4th screen to work properly?
 
Joined
Nov 27, 2010
Messages
27
Motherboard
Gigabyte GA-Z68X-UD3H-B3, 16gb DDR3 1600
CPU
Intel i5 2500k
Graphics
Gigabyte R280X OC
Mac
Classic Mac
Mobile Phone
  1. iOS
Nobody who can help?:|
 
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