I see this warning:
WARNING: nvidia-installer was forced to guess the X library path '/usr/lib' and
X module path '/usr/lib/xorg/modules'; these paths were not queryable
from the system. If X fails to find the NVIDIA X driver module,
please install the `pkg-config` utility and the X.Org SDK/development
package for your distribution and reinstall the driver.
I'd suggest reading here: