GNU/Linux Lubuntu Installing GeForce Driver Guide
Hi! The linked Tutorial shows you Step-by-Step How to Install NVIDIA GeForce Graphics and GPU Driver in Lubuntu GNU/Linux Desktop.
The GeForce Driver Lubuntu Setup is a breeze, requiring just a few straightforward Shell Commands to complete.
Most noteworthy: first try with the Recommended NVIDIA Driver Setup from Apt Lubuntu Repo, and then possibly the Generic for Linux.
GNU/Linux Lubuntu NVIDIA GeForce Driver Installation Guide
