(Guide) Installing Nvidia + Bumblebee + CUDA for Optimus enabled Laptops

[nab]

Hi staticn0de!
First, thank for your guide. it helped me a lot. The result show pass.
But i don't know is it working? I see in system setting->details: it don't show graphics driver!
Then i tried test:
glxinfo | grep -i "direct rendering"
It show:
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Error: couldn't find RGB GLX visual or fbconfig
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".

Is it problem?