Remove/Add nvidia drivers ubuntu 14.04.2

Question

I'm following Ubuntu Wiki to install the drivers for hybrid-graphics in Ubuntu 14.04.2.

Here are the steps:

NVIDIA systems:

1. Make sure that no other NVIDIA driver is installed (keep the nvidia-common package).
2. Install nvidia-331.

3. Reboot the system (restarting X won't be enough).

   NOTE: you can easily switch between GPUs from the Prime section of the nvidia-settings panel.

I'm not sure about step 1 - is it ok to just go to Additional Drivers and select nvidia-331 , will this uninstall other nvidia drivers if I have any ? And I guess this should install the driver (step 2) , or I have to do something explicitly like install from command line ?

Answer 1

Firstly,

sudo apt-get remove --purge nvidia*

Enable the Universe and Multiverse repositories - you need to do this to allow the bumblebee and nvidia packages respectively to be installed. Then:

sudo add-apt-repository ppa:bumblebee/stable

sudo apt-get update

sudo apt-get install bumblebee bumblebee-nvidia primus linux-headers-generic

sudo reboot

To run your application with the discrete NVIDIA card run in the terminal:

optirun [options] <application> [application-parameters] 

Example:

optirun firefox 

For a list of options for optirun run:

optirun --help

You can also use prime-select option e.g.

sudo prime-select nvidia

sudo prime-select intel

To check:

prime-select --query

Answer 2

Please refer to this topic.

I've found there everything what I needed once.