i just reinstalled debian 8, installed bumblebee on my laptop. I tried optirun glxgears, to check it worked, and all is fine.

for some reason, if i disable vsync, i get much higher results using the intel integrated graphics than using the nvidia one. intel:

rhiakath@aiur:~$ vblank_mode=0 glxgears -info | grep -v EXTENSIONS ATTENTION: default value of option vblank_mode overridden by environment. ATTENTION: default value of option vblank_mode overridden by environment. GL_RENDERER = Mesa DRI Intel(R) Ivybridge Mobile GL_VERSION = 3.0 Mesa 10.3.2 GL_VENDOR = Intel Open Source Technology Center VisualID 33, 0x21 32346 frames in 5.0 seconds = 6469.036 FPS 32110 frames in 5.0 seconds = 6421.822 FPS

and now for the nvidia part

rhiakath@aiur:~$ vblank_mode=0 optirun glxgears -info | grep -v EXTENSIONS ATTENTION: default value of option vblank_mode overridden by environment. ATTENTION: default value of option vblank_mode overridden by environment. ATTENTION: default value of option vblank_mode overridden by environment. ATTENTION: default value of option vblank_mode overridden by environment. GL_RENDERER = GeForce GT 630M/PCIe/SSE2 GL_VERSION = 4.4.0 NVIDIA 340.65 GL_VENDOR = NVIDIA Corporation ATTENTION: default value of option vblank_mode overridden by environment. ATTENTION: default value of option vblank_mode overridden by environment. VisualID 33, 0x21 11828 frames in 5.0 seconds = 2365.596 FPS 12384 frames in 5.0 seconds = 2476.770 FPS

what's wrong here??? I remember using the nvidia gpu would be much faster! Did i forget something?