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I'm currently using a Lenovo IdeaPad Y510p with SLI Dual Graphics [2 NVIDIA GeForce GT 750m cards]. My computer has a UEFI BIOS and Windows 8 pre-installed on the EFI HDD. I installed Ubuntu 13.04 using a LiveUSB. I turned off SecureBoot in the BIOS and FastBoot in Windows 8. After booting from the USB and selecting "Install Ubuntu" in the menu, my screen turned black and wouldn't display anything. It wasn't a brightness issue as the LCD backlight was still on.

I finally managed to install Ubuntu but I had to remove my 2nd NVIDIA card for it to actually display. Ubuntu is running off of my Core i7 Haswell graphics instead of the NVIDIA card. I installed the NVIDIA drivers [325.15], but it still seems to be running off the Haswell integrated graphics. Also, when I plug in the 2nd NVIDIA card again, the same black screen issue arises when I try to boot up my installed Ubuntu.

I would greatly appreciate if someone helped me to get Ubuntu to run properly with both of my NVIDIA cards.

RECAP: Ubuntu is installed alongside Windows, not in place of. Ubuntu will only load properly when one of my video cards is unplugged. And it is still only using the Core i7 Haswell integrated graphics.

EDIT: This is the driver I installed: http://www.nvidia.com/object/linux-display-amd64-325.15-driver.html

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I have the same machine running just fine. Except it doesn't even notice I have two cards. I'm using the nvidia drivers. I was hoping to turn SLI on, but not sure how to do that. –  Jonathan Leaders Jun 18 at 15:17

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