When I type in the search bar no suggestions appear when DuckDuckGo is the default search engine, but if I switch to Google, it works fine. I would like to use DuckDuckGo as my default search engine but I like having search suggestions. I have been in the preferences and made sure the "Provide search suggestions" box is checked. I'm using Firefox 38.0 and Ubuntu 14.04. Thanks for any help in advance!
The answer lies in the nature of DuckDuckGo itself. Since the search engine doesn't track users or store their search history, it doesn't provide a search suggestion service. If you really need that, stick to Google.