install nvidia drivers with ppa into Ubuntu 15

Question

I use a Ubuntu 15(desktop) + KDE Plasma 5 into a Vagrant Box. I have problem with my resolution screen.

For resolve this I want to install NVIDIA drivers on my Ubuntu. It seem to be more goodly than install this with the ppa way.

I'm helping with this official howto : Ubuntu NVIDIA install

• sudo add-apt-repository ppa:xorg-edgers/ppa => OK
• sudo apt-get update => OK
• ubuntu-drivers devices this return me this :

If I try to install the official .run file NVIDIA I have another problem.

What is the process to install my NVIDIA GeForce 580GTX drivers on Ubuntu 15 ?

I need install VBoxGuestAdditions mandatory for using graphical drivers ?

I try with Ubuntu 15 and Unity :

Answer 1

To install the latest driver on Kubuntu, first remove that PPA from /etc/apt/sources.list in a terminal

sudo add-apt-repository -r ppa:xorg-edgers/ppa

Now add this one

sudo add-apt-repository ppa:graphics-drivers/ppa
sudo apt-get update

Now install the latest driver

sudo apt-get install nvidia-358

and reboot

sudo reboot