title: Enable Blender openCL compute in linux
body: <p>I have a HP Envy 4 1025tx machine with Ubuntu 12.10.</p>
  
  <p>My blender doesn't seem to detect the dedicated G-Card ATI Radeon 7670m.
  But it does detect it on windows. Should I have to install any linux drivers
  or does blender doesn't fully support openCL on linux. Or shoulf I manually 
  recompile the code?</p>
  
  <p>How should I fix it?</p>