see my desktop on two monitors Lubuntu

Solution 1:

Here is a good explanation of how to configure these settings: http://a19.video2.blip.tv/10540008615475/Llelectronics-LubuntuScreencastMultimonitoring462.webm?brs=789&bri=8.6

What you likely want is arandr (sudo apt-get install arandr) -- > access it through: preferences --> Arandr

The GUI is pretty intuitive.

If you have an NVIDIA driver then the solution is slightly different. Its explained in the (excellent) screen-cast.

Solution 2:

I was reading this; it's an app that can help you extend your desktop.

You can add the PPA repo: execute these commands one by one:

sudo add-apt-repository ppa:disper-dev/ppa
sudo add-apt-repository ppa:nmellegard/disper-indicator-ppa
sudo apt-get update
sudo apt-get install disper disper-indicator

Read more here....