如果系统设置打不开，请重新安装gnome-control-center
sudo apt-get install gnome-control-center
如果设置里只有很少的几个图标请重新安装unity-control-center
sudo apt-get install unity-control-center
以上转自http://tieba.baidu.com/p/2997221608 9楼
如果没有语言支持
sudo apt-get install language-selector-gnome