I\'m trying to install CUDA 7.5 in my ubuntu 14.04. I followed everything in this guide (installation through package): http://developer.download.nvidia.com/compute/cuda/7.5/Pro
I solved (ditched actually) the problem by using 'Runfile method' for installing. I could get the latest nvidia driver installed with the package method explained above, but the problem seemed to be the cuda toolkit.
Installing the driver through Runfile is pain. So, at the prompt I chose to install just 'cuda toolkit 7.5' and all the files got copied to /usr/local/cuda*
directory properly.