On an AJAX or Turbolinks site with disqus you need to do some extra checking to see if it needs to be reset or instantiated.

<div id="disqus_thread"></div>
<script type="text/javascript">
  if(typeof DISQUS === "undefined"){
    var disqus_shortname = 'your_shortname'; // required: replace example with your forum shortname

    (function() {
      var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
      dsq.src = "//" + disqus_shortname + '.disqus.com/embed.js';
      (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq);
    })();
  }else{
    DISQUS.reset({
      reload: true,
      config: function () {
        this.page.identifier = document.title;
        this.page.url = location.href;
      }
    });
  }
</script>

**Credits to Yos Riady for this solutions

Related External Links:

• Snip2Code - Disqus Thread on Rails Turbolinks