Dual Auria 2560 x 1440 Monitor Issue

I am using a GTX 660Ti graphics card and 2 monitors (one on displayport, one on dual link DVI).
I have a I7 3770k, 16gbs ram, gigabyte z77 board I think.
When I boot the system, it boots with both screens black and right to the mac desktop. No apple screen or boot options.
I do not have the option for bios, or hitting space bar so I can choose my windows install on another drive.
Everything worked fine previously without the 2nd monitor on DVI, but is there something I should be doing so I can keep it connected and yet still have the options during boot?

Any help appreciated!

Does the graphics card have two DVI-D ports or do you have a DisplayPort to DVI-D converter?

I am assuming the monitors work independently but I might be wrong.

One DVI-I One DVI-D One Displayport and One HDMI

hmm. interesting. I know I have had issues with DisplayPort on my Radeon cards but with you running an nVidia setup and the newest nVidia card I have around is a G450 which has DVI-D, MiniHDMI, and DVI-I wont do me much help with helping you out.

Do you get a BIOS POST screen at all before your boot-loader shows?

E.G. if you boot your machine up and keep smacking F8 do you get a BIOS boot menu?

Just trying to think what the issue would be, definitely sounds annoying though.

Could hammer away at f8, or DEL, does nothing that I can see (both screens stay black).
I unplugged the DVI and it booted to logo screens no problem.
So not sure how I can tweak it to work with both, otherwise to load my windows HD I'll just have to unplug the monitor and replug it... annoying but would suffice as a work around.

Bumping this old thread because its still an issue for me.
I upgraded my monitor to another higher definition one, 2880 x 1880 or something.
One is displayport, one is dual link DVI.
No bios screen, no chameleon, no chance to hit space to choose which hard drive.
I have Mac OS on one, and Windows on another.
I could always choose previously, or if I unplug one monitor entirely.
But that is a huge pain, any thoughts?

arsenic1234 said:

Bumping this old thread because its still an issue for me.
I upgraded my monitor to another higher definition one, 2880 x 1880 or something.
One is displayport, one is dual link DVI.
No bios screen, no chameleon, no chance to hit space to choose which hard drive.
I have Mac OS on one, and Windows on another.
I could always choose previously, or if I unplug one monitor entirely.
But that is a huge pain, any thoughts?

Click to expand...

Hard to say about BIOS without knowing board model and version + BIOS rev.

In BIOS, what is your gfx setting?
First Init Display is Auto or PCIe (PEG)?
if set to PCIe can you set to gen2 or gen3 to match the GPU slot generation?
Have you tried a different frame buffer?
Have you checked nVidia site for Mac drivers for your GPU?

Gigabyte Z77x-UD5H
Bios F7

I tried setting First Init to PEG didn't work.
I tried seeting PCIE to Gen1, (which gen is the PCIE x 16 slot) 1 ?
No drivers for mac for Geforce 660TI for maverick that I could find.
How do I change the frame buffer?

I think the problem is the resolution is so high on both monitors that it doesn't load until the OS hits.
But why when I unplug the DVI-D monitor and just use the displayport can I get the options?
When the second goes in, they are both blank till OS hits.
But I can't get into bios, change desired boot drive, etc.

Thanks for the help, any more ideas?