Linux Mint 13 Ekran donuyor

lspci | egrep 'VGA|3D|Display' 
  glxinfo | grep render 
  inxi -G 
  cat /etc/X11/xorg.conf 
  

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 
  01:00.0 VGA compatible controller: NVIDIA Corporation GF116M [GeForce GT 555M/635M] (rev ff) 
  

direct rendering: Yes 
  OpenGL renderer string: Mesa DRI Intel(R) Sandybridge Mobile  
      GL_NV_conditional_render, GL_NV_depth_clamp, GL_NV_light_max_exponent,

Graphics:  Card-1: Intel 2nd Generation Core Processor Family Integrated Graphics Controller  
             Card-2: NVIDIA GF116M [GeForce GT 555M/635M]  
             X.Org: 1.12.3 drivers: intel (unloaded: vesa,fbdev) Resolution: 1920x1080@59.9hz  
             GLX Renderer: Mesa DRI Intel Sandybridge Mobile GLX Version: 3.0 Mesa 9.2.0 
  

cat: /etc/X11/xorg.conf: No such file or directory 
  

 
  optirun -vvv glxgears 
  

[ 8773.819222] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf 
  [ 8773.819665] [INFO]Configured driver: nvidia 
  [ 8773.819817] [DEBUG]optirun version 3.2.1 starting... 
  [ 8773.819829] [DEBUG]Active configuration: 
  [ 8773.819836] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf 
  [ 8773.819842] [DEBUG] X display: :8 
  [ 8773.819849] [DEBUG] LD_LIBRARY_PATH: /usr/lib/nvidia-304:/usr/lib32/nvidia-304 
  [ 8773.819855] [DEBUG] Socket path: /var/run/bumblebee.socket 
  [ 8773.819861] [DEBUG] Accel/display bridge: auto 
  [ 8773.819867] [DEBUG] VGL Compression: proxy 
  [ 8773.819874] [DEBUG] VGLrun extra options:  
  [ 8773.819880] [DEBUG] Primus LD Path: /usr/lib/x86_64-linux-gnu/primus:/usr/lib/i386-linux-gnu/primus 
  [ 8773.819961] [DEBUG]Using auto-detected bridge virtualgl 
  [ 8774.597428] [INFO]Response: No - error: Could not load GPU driver 
   
  [ 8774.597447] [ERROR]Cannot access secondary GPU - error: Could not load GPU driver 
   
  [ 8774.597452] [DEBUG]Socket closed. 
  [ 8774.597475] [ERROR]Aborting because fallback start is disabled. 
  [ 8774.597483] [DEBUG]Killing all remaining processes. 
  

 
  cat /etc/bumblebee/bumblebee.conf 
  cat /etc/bumblebee/xorg.conf.nvidia  
  dpkg -l | egrep 'nvidia|bumblebee'