I downloaded the driver from the official website and installed them according to the instruction correctly. However, after I successfully compiled all programs in SDK and ran the deviceQuery, it shows errors like below:
CUDA Device Query (Runtime API) version (CUDART static linking)
cudaGetDeviceCount returned 38
→ no CUDA-capable device is detected
Here is some detail about my case
Card: Quadro 600
NVRM version: NVIDIA UNIX x86_64 Kernel Module 270.41.19 Mon May 16 23:32:08 PDT 2011
GCC version: gcc version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5)