I am working on workstation with CPU core I7 4790 and two GPUs GTX 760 4 GB ram/1152 core the system's memory is 16 GB RAM I have Ubuntu 14.04.1 LTS after many tries and reinstalling Ubuntu many times finally i have correctly installed nvidia driver 340.46 using 3 shell commands ppa xorg-edgers
now i want to install Cuda 6.5 toolkit but in the manual they say that the cuda toolkit installer will also install nvidia Graphics driver
how to prevent the installer from reinstall the graphics driver how to install cuda 6.5 toolkit without reinstalling my graphics driver because i faced many problems until i installed 340.46 correctly
and after successfully installing cuda toolkit 6.5 how to upgrade my graphics driver without disturbing cuda toolkit and reinstall everything from the beginning