My laptop runs on Ubuntu 13.10 and has NVIDIA GT 520MX discrete graphics. But Additional Drivers in Software & Updates shows that 'No additional drivers are available'. Why is it so? How can I install the correct driver?
First press ctrl + alt +f1 This will open tty1
Now you are using the tty terminal console
log in with your user name and password
Now stop the lightdm(dgm or whatever) using the command
Then install the new driver with