How do I get switchable graphics to work on my Samsung RF711 With Intel HD & GeForce 540M Graphics cards on Ubuntu 14.04 LTS

You can try the nvidia-prime package, to have a better support of the Nvidia Optimus Technology.

The first step is to clean-up a little bit your system with :

sudo apt-get purge bumblebee* primus libvdpau-va-gl1

And we install the nvidia driver and nvidia-prime :

sudo apt-get install nvidia-331 nvidia-prime mesa-utils

If you want the grapical acceleration for HD videos, you can install :

sudo apt-get install vdpau-va-driver

Then reboot your system. And go to 'nvidia-settings' to check under the nvidia-prime section if you can switch card.

Nvidia-Prime Settings. Source : webupd8.org

You can also add an applet for unity to simply switch between cards : prime-indicator

sudo add-apt-repository ppa:nilarimogard/webupd8
sudo apt-get update
sudo apt-get install prime-indicator
sudo reboot

More info about the prime-indicator.

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