Running `zgrep Caffeine ~/.cache/upstart/unity-panel-service.log*` should find any such messages (what I want to know is whether Caffeine is trying to inhibit idleness and failing, or whether it is not finding the fullscreen window).
Running `zgrep Caffeine ~/.cache/ upstart/ unity-panel- service. log*` should find any such messages (what I want to know is whether Caffeine is trying to inhibit idleness and failing, or whether it is not finding the fullscreen window).