found the log of my CUDA toolkit installation:
Do you accept the previously read EULA? (accept/decline/quit): accept
You are attempting to install on an unsupported configuration. Do you wish to continue? ((y)es/(n)o) [ default is no ]: y
Install NVIDIA Accelerated Graphics Driver for Linux-x86_64 352.39? ((y)es/(n)o/(q)uit): y
Do you want to install the OpenGL libraries? ((y)es/(n)o/(q)uit) [ default is yes ]: y
Install the CUDA 7.5 Toolkit? ((y)es/(n)o/(q)uit): y
Enter Toolkit Location [ default is /usr/local/cuda-7.5 ]: /usr/cuda-7.5
Do you want to install a symbolic link at /usr/local/cuda? ((y)es/(n)o/(q)uit): y
Install the CUDA 7.5 Samples? ((y)es/(n)o/(q)uit): y
Enter CUDA Samples Location [ default is /root ]:
Installing the NVIDIA display driver...
Installing the CUDA Toolkit in /usr/cuda-7.5 ...
Missing recommended library: libGLU.so
Missing recommended library: libXi.so
Missing recommended library: libXmu.so
Installing the CUDA Samples in /root ...
Copying samples to /root/NVIDIA_CUDA-7.5_Samples now...
Finished copying samples.
===========
= Summary =
===========
Driver: Installed
Toolkit: Installed in /usr/cuda-7.5
Samples: Installed in /root, but missing recommended libraries
Please make sure that
- PATH includes /usr/cuda-7.5/bin
- LD_LIBRARY_PATH includes /usr/cuda-7.5/lib64, or, add /usr/cuda-7.5/lib64 to /etc/ld.so.conf and run ldconfig as root
To uninstall the CUDA Toolkit, run the uninstall script in /usr/cuda-7.5/bin
To uninstall the NVIDIA Driver, run nvidia-uninstall
Please see CUDA_Installation_Guide_Linux.pdf in /usr/cuda-7.5/doc/pdf for detailed information on setting up CUDA.
Logfile is /tmp/cuda_install_15006.log