You don't develop on laptops. This is not what they are built for: they slow, keyboards are not capable of decent typing speed and screens are tiny.
Stop trying to look hip and get yourself a workstation.
Stop trying to look hip and get yourself a workstation.
For me, the convenience of being able to take my computer wherever I want far outweighs the bigger screens and hard disks of a desktop. And I've never found the keyboards to be a problem; I type 90+ WPM on a Dvorak-layout laptop keyboard.
And I'm using an external keyboard + LCD, so I have the best of both worlds.
I've managed to get the ATI Radeon under Ubuntu to display both two desktops or only use one screen or the other. But it was quite a fight. And more fancy things like one large desktop on two screens didn't work out.
I hear that the new Intel graphic chips are also quite nice, and the fact that they open sourced the drivers should make them the ideal Linux graphics adapters, but I don't have any experience with them.