• Are you really using an nVidia Optimus card?
  • Have you installed a recent nvidia driver?
  • [VGL] Could not obtain Pbuffer-capable RGB visual on the server
  • [VGL] ERROR: Could not open display :8 with certain programs
  • Desktop effects do not work anymore
  • 3D effects don't work and when running 3D apps in a terminal you get Xlib: extension "GLX" missing on display ":0"
  • optirun does not work
  • I don't get any power saving!
  • bbswitch is ineffective due to nvidia driver loading on boot -- bbswitch: device XXX is in use by driver 'nvidia', refusing OFF
  • sys.log: The Bumblebee X server failed to start. Please check /var/log/Xorg.8.log
  • (EE) Failed to load module "kbd" (module does not exist, 0) (<=2.4.1)
  • (EE) NVIDIA(0): WAIT: (E, 0, 0x857d, 0)
  • Failed to initialize the NVIDIA GPU at PCI:1:0:0. Please ...
  • ERROR: ld.so: object 'libdlfaker.so' from LD_PRELOAD cannot be preloaded: ignored.
  • [ERROR]Cannot access secondary GPU - error: [XORG] (EE) [drm] failed to open device
  • [ERROR]Cannot access secondary GPU - error: [XORG] (EE) No devices detected.
  • [ERROR]Cannot access secondary GPU - error: [XORG] (EE) Failed to load /usr/lib/xorg/modules/libglamoregl.so: /usr/lib/xorg/modules/libglamoregl.so: undefined symbol: _glapi_tls_Context
  • [ERROR]Cannot access secondary GPU - error: could not start X Server and/or Kernel oops with GT 600M series cards (Kepler) on boot
  • bumblebeed: Module 'nvidia' is not found.
  • bumblebeed: Module nvidia is in use by: