I have been running Ubuntu 14.04 for some while with no problems. I've not knowingly changed anything, but all of a sudden none of the icons in system settings are showing. When I load system settings, the system settings window appears, and the "All Settings" button shows in the top left corner of the window...but nothing else - no icons at all. Any ideas?
Update: I tried to run gnome-control-center from a terminal window. I got the same window appear with no icons, but the following error message appears on the terminal:
** (unity-control-center:25620): WARNING **: Could not load control center menu: Failed to look up menu_file for "/etc/xdg/menus/unitycc.menu"
Looking in the above directory, I have only one file: gnomecc.menu, but no unitycc.menu
I tried to create one by doing "sudo ln -s gnomecc.menu unitycc.menu"
Now, I get a window with some icons but not all that should be there. I just get icons for: Language Support; Security & Privacy; Printers; Firewall Configuration; Landscape Service; and Software & Updates. Normally there are a lot more than that.
Any suggestions gratefully received.