What kind of system are you installing Airwave on? If that is a very recent server, make sure you have the most recent Airwave installation ISO (version 8.2.2.1 at the moment). The errors on the i915 'render error' do indicate some issue with compatibility with your server.
If you already used the latest installer, you might need some specific drivers for your system. Please contact your partner or Aruba TAC for support on this installation.