$ sudo apt-get remove --purge nvidia-*
$ sudo apt-get autoremove
$ sudo apt-get autoclean
You can choose to install CUDA drivers from .deb file or .run file
Download CUDA 8.0 .run file (local) for Ubuntu - Download Page
eg: Run file (local) for Ubuntu 14.04 (~1.4G)
$ wget https://developer.nvidia.com/compute/cuda/8.0/Prod2/local_installers/cuda_8.0.61_375.26_linux-run`
$ chmod 755 cuda_8.0.61_375.26_linux-run
Login to the Virtual Console (not the Terminal) by pressing Ctrl + Alt + F1 - Enter your username and password
$ sudo /etc/init.d/lightdm stop
$ sudo init 3
$ sudo apt-get install build-essential
$ echo blacklist nouveau option nouveau modeset=0 |sudo tee -a /etc/modprobe.d/blacklist-nouveau.conf
$ sudo update-initramfs -u
$ sudo ./cuda_8.0.61_375.26_linux-run
...
(Scroll through the Terms and Conditions by Pressing Ctrl+D
...
Do you want to Install Nvidia Integrated Drivers? (yes)
Do you want to Install OpenGL? (yes)
**NOTE: If *lightdm* fails to display after login, Restart the whole process by opting (no) for OpenGL**
...
Install X11 config file? (no)
Install cuda? (yes)
$ sudo rm /etc/X11/xorg.conf
(No need to create new X11 file as during restart, lightdm will create a new file with new drivers configuration)
$ sudo reboot
After reboot, login to the system and run nvidia-settings to ensure the drivers are installed
$ nvidia-settings
...
$ nvidia-smi
...
Download CUDA 8.0 .deb file (local) for Ubuntu - Download Page
eg: Deb file (local) for Ubuntu 14.04 (~1.9G)
$ wget https://developer.nvidia.com/compute/cuda/8.0/Prod2/local_installers/cuda-repo-ubuntu1404-8-0-local-ga2_8.0.61-1_amd64-deb`
$ sudo dpkg -i cuda-repo-ubuntu1404-8-0-local-ga2_8.0.61-1_amd64-deb
$ sudo apt-get update
$ sudo apt-get install cuda
$ sudo reboot
After reboot, login to the system and run nvidia-settings to ensure the drivers are installed
$ nvidia-settings
...
$ nvidia-smi
...
Comment if there any issues