ubuntu14.04+cuda8.0 re-installing CUDA

The problem occurs when you re-make the Caffe:sudo make runtest after reinstalling the video driver:

Check Failed:error = = cudasuccess (30vs.0) unkown error ...

1. Uninstall the original Cuda

sudo/usr/local/cuda-8.0/bin/uninstall-cuda-8.0.pl

2. Re-install Cuda

3. Problems occurred:

/USR/BIN/LD:-lglut collect2 not found:

Error:ld returned 1 exit status

Workaround:

         http://blog.csdn.net/abclixu123/article/details/46571985
         sudo apt-get install libgl1-mesa-dev
          sudo apt-get Install Libglu1-mesa-dev
          sudo apt-get install libglut-dev  or  sudo apt-get install Freeglut3-dev

4. when running devicequery under Samples/bin/x86_64/linux/release,sudo

.......

Cudagetdevicecount returned, unknown

Error Result = FAIL

Workaround: http://blog.csdn.net/tcorpion/article/details/52741836

Apt-get Remove nvidia-340