about nvidia graphics driver

Question

I have installed NVidia graphics drivers for Ubuntu from the official NVidia site. When I installed I wasn't able to get my battery back up.

I heard about an open source driver for Ubuntu 14.04 so I installed the bumblebee NVidia driver for my laptop.

When I installed that driver it was running quite nicely. It has given me the battery back up. Everything was fine but when I restarted my computer Ubuntu loads and I am not able to get any visuals.

My computer is the same, just like when I shut it down. There is nothing on the display but my system is running.

What can I do to run my computer with the bumblebee NVidia driver?

My computer is a Dell Inspiration 5558 with a 4 GB 920M nvidia graphics card.

Answer 1

To get your computer running properly again reinstall the NVIDIA drivers and Optimus support.
Uninstall bumblebee and install nvidia-prime, it is the replacement to switch between graphics.

First uninstall every NVIDIA related software - boot the PC and when the GRUB menu appears :

Highlight the Ubuntu menu entry and press the E key.
Add nouveau.modeset=0 to the end of the linux line.
Press F10 to boot the Ubuntu operating system.

When the login screen appears press Ctrl+Alt+F1.
Enter your user name and password and then execute :

sudo apt-get purge nvidia* bumblebee  
sudo apt-get update
sudo reboot  

Now install the latest official NVIDIA drivers - boot the PC and when the GRUB menu appears :

Highlight the Ubuntu menu entry and press the E key.
Add nouveau.modeset=0 to the end of the linux line.
Press F10 to boot the Ubuntu operating system.

When the login screen appears press Ctrl+Alt+F1.
Enter your user name and password and then execute :

sudo add-apt-repository ppa:graphics-drivers/ppa
sudo apt-get update
sudo apt-get install nvidia-358 nvidia-prime
sudo reboot  

You can switch between intel and NVIDIA graphics with NVIDIA X Server Settings Prime Profiles.