How to fix missing icons in System Settings in Ubuntu 14.04 after customization. System Settings icons can be missing in 14.04, if you accidentally removed some packages or some dependencies.
While playing with Ubuntu 14.04, I installed or uninstalled some packages. I do not even remember what I was doing. As a result, now I can’t see most of the system settings in settings window.
To restore the missing System Settings Icons in Ubuntu 14.04, you may try installing the package ubuntu-desktop. Open the Terminal and run the following command:
sudo apt-get install ubuntu-desktop
If it doesn’t work for you, you may uninstall and then reinstall System Settings (unity-control-center) from the Ubuntu Software Center. You can also run the following command from the terminal
sudo apt-get install unity-control-center
You can also try out the following command to resolve this issue:
sudo apt-get install unity-control-center-signon gnome-control-center-unity
I hope it resolves the issue and you are able to see missing System Setiing icons in Ubuntu 14.04, again.