I upgraded from 13.04 to 13.10 and now all icons in the application lens are gone. This is what I tried so far: apt-get install --reinstall unity-lens-applications unity --replace and unity --reset-icons moving ~/.config to ~/.config2 deleting ~/.cache/software-center and ~/.cache/unity Most of these things have been suggested in this question: Unity Applications lens is empty - but all to no avail.