如果系統設置打不開，請重新安裝gnome-control-center
sudo apt-get install gnome-control-center
如果設置里只有很少的幾個圖標請重新安裝unity-control-center
sudo apt-get install unity-control-center
以上轉自http://tieba.baidu.com/p/2997221608 9樓
如果沒有語言支持
sudo apt-get install language-selector-gnome