Extending Xubuntu desktop to external display using xrandr

Few weeks ago I’ve bought a new laptop and I’ve installed a new Xubuntu 11.10 on it. Surprisingly (and sadly), when I tried to connect an external display to it, I found out that it’s impossible to do it in “out of the box” version of Xubuntu. I had only a choice to use my external display instead of the internal one or to do a “mirror” configuration, having the same on both displays… Satisfying? No, thanks. I had to find out how to do it in the way I want it to work.

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