title: Issue setting Kivy to fullscreen
body: <p>I'm trying to write an application that runs kivy at full screen. But these are my issues:</p>
  
  <p>1) When I run the command:</p>
  
  <pre><code>#Config.set('graphics', 'fullscreen', 1)
  </code></pre>
  
  <p>Then kivy appears to go full time, but the window has a lot of black spaces around the background image. Even if I elongate the image, kivy just cuts the image when showing it.</p>
  
  <p>2) When I run this command to set the window size to the size of my screen:</p>
  
  <pre><code>Config.set('graphics', 'width', '1366')
  Config.set('graphics', 'height', '768')
  </code></pre>
  
  <p>This way actually gives me <strong>a better result</strong> than full screen, but kivy returns a height parameter of only 715 instead of the 768, which is the value I told kivy to use (as you can see in the Config.set() function above).</p>
  
  <p>My screen resolution is 1366x768</p>
  
  <p>How can I solve this issue and make my kivy app go real full screen?</p>
  
  <p>Thank you very much</p>