How to install CUDA 2.1 on ubuntu 9.04

• download and install kernel 2.6.29 from http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.29/
• install the NVIDIA driver 180, and check it going to the nvidia console on System menu
• download and install CUDA toolkit: CUDA Toolkit version 2.1 from http://www.nvidia.com/object/cuda_get.html into /usr/local/cuda
  
• create variables
  export PATH=/usr/local/cuda/bin:$PATH
  export LD_LIBRARY_PATH=/usr/local/cuda/lib: $LD_LIBRARY_PATH
  and save it inside .bashrc on your home directory
  
• download and install CUDA SDK: CUDA SDK 2.1 for Linux from http://www.nvidia.com/object/cuda_get.html into $(HOME)/NVIDIA_CUDA_SDK/
• Now you have to install same other required libraries
  Open a terminal and using the sudo apt-get install command install the libraries:
  sudo apt-get install build-essential
  sudo apt-get install libxi6 libxi-dev
  sudo apt-get install libxmu6 libxmu-dev
  sudo apt-get install libc6-dev-i386
  sudo apt-get install libglut3-dev
  
• open terminal, go to NVIDIA_CUDA_SDK directory, and type make to compile the source files.
• If 'error: identifier "__builtin_va_arg_pack" is undefined' appear on terminal, add a forward declaration (int __builtin_va_arg_pack();) to stdio2.h
• Execute make again and everything should work. If not try to install the required missing libraries.
• If the make command reach the end, now you can go to the NVIDIA_CUDA_SDK/bin/linux/release directory and test the samples, ad example execute ./deviceQuery to see your video device properties