CUDA 6.5 DeviceQuery doesn't run with Xubuntu 14.04 - GeForce 9500 GT (340.29)

I’m trying to install the CUDA toolkit on Xubuntu 14.04.2 LTS but I can’t, maybe somebody could help me. My graphics card is GeForce 9500 GT, theoretically, a CUDA capable card. When I launch DeviceQuery to test, it returns this:

Starting...

 CUDA Device Query (Runtime API) version (CUDART static linking)

modprobe: ERROR: ../libkmod/libkmod-module.c:809 kmod_module_insert_module() could not find module by name='nvidia_340_uvm'
modprobe: ERROR: could not insert 'nvidia_340_uvm': Function not implemented
cudaGetDeviceCount returned 30
-> unknown error
Result = FAIL

The nvidia-smi says this:

+------------------------------------------------------+                       
| NVIDIA-SMI 340.29     Driver Version: 340.29         |                       
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce 9500 GT     Off  | 0000:01:00.0     N/A |                  N/A |
| 75%   73C    P0    N/A /  N/A |     95MiB /  1023MiB |     N/A      Default |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Compute processes:                                               GPU Memory |
|  GPU       PID  Process name                                     Usage      |
|=============================================================================|
|    0            Not Supported                                               |
+-----------------------------------------------------------------------------+

Any ideas? :P