New answers tagged ubuntu-netbook
Ubuntu doesn't have performance modes, as far as I've seen. The most probable reason of sluggishness is that your hardware isn't good enough to run Ubuntu 14.10 very well. That's why the website says 12.04 works fine. If you want to keep 14.10 on it, though, you can try installing the MATE (GNOME) desktop. In a terminal window, run sudo apt-get install ...
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