I am newer to Ubuntu. Recently I bought Intel® Core™ i3-2120 CPU @ 3.30GHz (Intel HD Graphics 2000 display) with Dell IN2030M monitor. I installed Ubuntu 12.04 LTS version. My problem is, I can't change my screen resolution >1024 because the monitor was not detected, it says Unknown. Help please.
You need to install at least the package mesa-utils.
On a console type:
Logout and login
That will give you the basic graphic drivers, for advanced graphics you need to install Intel HD Graphics.