Comment 28 for bug 343261

Damiano, thanks for the suggestion. However, the result would be for a keypress to produce a notification bubble in cases where the key does nothing, and two notification bubbles when it actually does something. Neither of those seem like a good idea. We do have a few other cases where a notification bubble appears after nothing happens, but those are mainly to reassure you that you've gone as far as you can go, e.g. that you're already at maximum brightness.