Hi Urbanmasque and Welcome to Ubuntu,
It's better to use the Propitiatory driver than the open source one for your card.
You can see if the additional driver tool will offer you another driver first.
do the following:
go to software center > on edit >software sources > device drivers.
when it comes up wait, it may take awhile for it to search your system and offer driver choices
for your card you want 304. driver.
you can also install this driver from the terminal with this command:
Code:
sudo apt-get update && sudo apt-get install nvidia-304
Good luck
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