I have a Lenovo y410p, and I am trying to install Ubuntu 13.10 in EFI mode side-by-side with a Windows 8 installation on a GPT partition. I have already disabled secure boot, and I have the LiveCD image running off a USB flash drive in EFI mode.
When I get to the GRUB environment, I have to modify the kernel arguments to put
nomodeset=1 or the screen will be turned off when the kernel starts.
lsmod shows that the following modules are loaded for video:
The former is just the usual Intel graphics driver, and the latter is the open source NVIDIA driver.
When X starts, in
/etc/X11/Xorg.0.log it reports that a screen was found but it was not properly configured, and then it shows "no screens found".
nomodeset=1 in Install Ubuntu instead of Try Ubuntu works fine.
After installation, the same issue occurs as on the live environment. No dice. Not sure where to go from here.