NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running

I just installed CUDA in a notebook like this:

sudo apt-get install cuda

Like said here.

The compilation wokrs just fine but when I try to run I got the followin problem:
CUDA error at file.cu:128 code=35(cudaErrorInsufficientDriver) "cudaStreamCreate(&(stream[i]))"

My nvcc version:

nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2016 NVIDIA Corporation
Built on Tue_Jan_10_13:22:03_CST_2017
Cuda compilation tools, release 8.0, V8.0.61

Graphics card info:

lspci | egrep 'VGA|3D'

00:02.0 VGA compatible controller: Intel Corporation Skylake Integrated Graphics (rev 06)
02:00.0 3D controller: NVIDIA Corporation GM107M [GeForce GTX 960M] (rev a2)

I also installed VirtualGL, bumblebee-nvidia, primus, freeglut3-dev.
Following this.

When I try to run something on bumblebee I got this:
optirun glxspheres64

[   41.413478] [ERROR]Cannot access secondary GPU - error: Could not load GPU driver
[   41.413520] [ERROR]Aborting because fallback start is disabled.

nvidia driver not working.

nvidia-smi
NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.

It looks like the nvidia 375 version is instaled but I can't make it works.

whereis nvidia
nvidia: /usr/lib/nvidia /usr/share/nvidia /usr/src/nvidia-375-375.66/nvidia

And some driver info.

modinfo nvidia_375
filename:       /lib/modules/4.8.0-54-generic/updates/dkms/nvidia_375.ko

alias:          char-major-195-*
version:        375.66
supported:      external
license:        NVIDIA
srcversion:     68751AFD79A210CEFFB8758
alias:          pci:v000010DEd00000E00sv*sd*bc04sc80i00*
alias:          pci:v000010DEd*sv*sd*bc03sc02i00*
alias:          pci:v000010DEd*sv*sd*bc03sc00i00*
depends:        
vermagic:       4.8.0-54-generic SMP mod_unload modversions 

parm:           NVreg_Mobile:int
parm:           NVreg_ResmanDebugLevel:int
parm:           NVreg_RmLogonRC:int
parm:           NVreg_ModifyDeviceFiles:int
parm:           NVreg_DeviceFileUID:int
parm:           NVreg_DeviceFileGID:int
parm:           NVreg_DeviceFileMode:int
parm:           NVreg_UpdateMemoryTypes:int
parm:           NVreg_InitializeSystemMemoryAllocations:int
parm:           NVreg_UsePageAttributeTable:int

parm:           NVreg_MapRegistersEarly:int
parm:           NVreg_RegisterForACPIEvents:int
parm:           NVreg_CheckPCIConfigSpace:int
parm:           NVreg_EnablePCIeGen3:int
parm:           NVreg_EnableMSI:int
parm:           NVreg_TCEBypassMode:int
parm:           NVreg_UseThreadedInterrupts:int
parm:           NVreg_MemoryPoolSize:int
parm:           NVreg_RegistryDwords:charp
parm:           NVreg_RmMsg:charp

parm:           NVreg_AssignGpus:charp

I think it can be some driver version problem:

dpkg -l | grep nvidia
ii  bumblebee-nvidia                            3.2.1-10                                      amd64        NVIDIA Optimus support using the proprietary NVIDIA driver
ii  nvidia-375                                  375.66-0ubuntu0.16.04.1                       amd64        NVIDIA binary driver - version 375.66
ii  nvidia-375-dev                              375.66-0ubuntu0.16.04.1                       amd64        NVIDIA binary Xorg driver development files
ii  nvidia-modprobe                             375.51-0ubuntu1                               amd64        Load the NVIDIA kernel driver and create device files

ii  nvidia-opencl-icd-375                       375.66-0ubuntu0.16.04.1                       amd64        NVIDIA OpenCL ICD
ii  nvidia-prime                                0.8.2                                         amd64        Tools to enable NVIDIA's Prime

What am I missing?