Here's my setup:
- Lenovo ThinkPad T420, brand new
- NVIDIA Graphics Card
- 4GB of Ram
- 128GB Solid State Drive
- Intel Core i5 Processor
Given these specs, there's no reason games and Unity shouldn't be working. The strange thing is that both do work when I run from a live USB, but not when Ubuntu is installed to the hard drive. Is there something different with the 3D capabilities of running from the computer as opposed to running from the live USB?
Edit: Some more information: When I log in for the first time when running from the hard drive, Ubuntu says "It seems that you do not have the hardware required to run Unity. Please choose Ubuntu Classic at the login screen and you will be using the traditional environment."