I'm following Ubuntu Wiki to install the drivers for hybrid-graphics in Ubuntu 14.04.2.
Here are the steps:
- Make sure that no other NVIDIA driver is installed (keep the nvidia-common package).
- Install nvidia-331.
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 ?