Screen turned off when booting with GTX 560Ti Yosemite

Hello guys,

I've just upgraded from 10.8 to 10.10, everything work great on 10.8 but my 560ti have some issue with 10.10, the monitor turns off every time i try to boot in, i can boot with the iGPU and the VGA still working in Win 7.

My spec:
Asrock Z77 Extreme 4
i7 2600k
Corsair Vengeance 2x4GB
MSI GTX 560Ti

i've tried GraphicsEnabler=Yes or even -x could not get me pass the boot screen, my friend tell me that the frame buffer could not be loaded but he don't know how to fix it, can anyone help me with this?

i have the same problem, i need help pls!

Try boot with nv_disable=1, works for me.

Sorry, i'm from brazil and my english is very bad

xbrdido4 said:

Try boot with nv_disable=1, works for me.

Sorry, i'm from brazil and my english is very bad

Click to expand...

That seemed to work for me too. Thanks

Delete all the geforce kexts

How would I do that??

try add this to org.chameleon.Boot.plist

******* use with nvidia web driver *****

GraphicsEnabler=Yes
IGPEnabler=Yes
kext-dev-mode=1
PCIRootUID=1
nvda_drv=1

**********************************


******** if osx driver *******

GraphicsEnabler=Yes
PCIRootUID=1

**************************