title: SDL app using DirectFB error: No available video device
body: <p>I'm hoping this is something simple.  I am writing an app for an embedded linux platform from my Ubuntu linux desktop.  The app itself works fine under X11.  I can also get it to work using the fbcon driver and /dev/fb0.</p>
  
  <p>However, if I <code>putenv("SDL_VIDEODRIVER=directfb");</code> i get the error "No available video device"</p>
  
  <p>I'm still pretty new to SDL so I'm not sure what's going on.  I have just installed libsdl on my ubuntu desktop using 'apt-get install libsdl'.  So does the standard ubuntu SDL build not have support for DirectFB?  Is there something else I need to install/setup/execute before this will work?</p>
  
  <p>Or, more importantly, is there any point/advantage in trying to get DirectFB working when fbcon works fine?  I thought that DirectFB would allow me to set video modes correctly and offer some form of hardware acceleration that fbcon will not.</p>