NVIDIA driver installing problem: Unable to find the kernel source tree...

[adrianpip2000]

I have been trying to install the NVIDIA driver for my card (GeForce 8600M GT) for the last two days. I have searched around but nothing seems to fix my problem. When I start the driver installer, it begins nagging about that it doesn't find the kernel source tree and something. There is not really much to say about it, other than that I really need help and I hope someone on this forum is willing to help a newbie like me.

I downloaded the KDE version of BT and when I run "unname -r" it says "2.6.38". Please tell me if you need some more info about my system.

Here is my log-file from the Nvidia driver install:

nvidia-installer log file '/var/log/nvidia-installer.log'
creation time: Sat Jul  2 13:12:30 2011
installer version: 275.09.07

PATH:
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/etc/al
ternatives/gem-bin

option status:
  license pre-accepted               : false
  update                             : false
  force update                       : false
  expert                             : false
  uninstall                          : false
  driver info                        : false
  precompiled interfaces             : true
  no ncurses color                   : false
  query latest version               : false
  no questions                       : false
  silent                             : false
  no recursion                       : false
  no backup                          : false
  kernel module only                 : false
  sanity                             : false
  add this kernel                    : false
  no runlevel check                  : false
  no network                         : false
  no ABI note                        : false
  no RPMs                            : false
  no kernel module                   : false
  force SELinux                      : default
  no X server check                  : false
  no cc version check                : false
  run distro scripts                 : true
  no nouveau check                   : false
  run nvidia-xconfig                 : false
  sigwinch work around               : true
  force tls                          : (not specified)
  X install prefix                   : (not specified)
  X library install path             : (not specified)
  X module install path              : (not specified)
  OpenGL install prefix              : (not specified)
  OpenGL install libdir              : (not specified)
  utility install prefix             : (not specified)
  utility install libdir             : (not specified)
  installer prefix                   : (not specified)
  doc install prefix                 : (not specified)
  kernel name                        : (not specified)
  kernel include path                : (not specified)
  kernel source path                 : (not specified)
  kernel output path                 : (not specified)
  kernel install path                : (not specified)
  precompiled kernel interfaces path : (not specified)
  precompiled kernel interfaces url  : (not specified)
  proc mount point                   : /proc
  ui                                 : (not specified)
  tmpdir                             : /tmp
  ftp mirror                         : ftp://download.nvidia.com
  RPM file list                      : (not specified)
  selinux chcon type                 : (not specified)

Using: nvidia-installer ncurses user interface
-> License accepted.
-> Installing NVIDIA driver version 275.09.07.
-> Performing CC sanity check with CC="cc".
-> Performing CC version check with CC="cc".
ERROR: Unable to find the kernel source tree for the currently running kernel. 
       Please make sure you have installed the kernel source files for your
       kernel and that they are properly configured; on Red Hat Linux systems,
       for example, be sure you have the 'kernel-source' or 'kernel-devel' RPM
       installed.  If you know the correct kernel source files are installed,
       you may specify the kernel source path with the '--kernel-source-path'
       command line option.
ERROR: Installation has failed.  Please see the file
       '/var/log/nvidia-installer.log' for details.  You may find suggestions
       on fixing installation problems in the README available on the Linux
       driver download page at www.nvidia.com.

[izidor]

I have been trying to install the NVIDIA driver for my card (GeForce 8600M GT) for the last two days. I have searched around but nothing seems to fix my problem. When I start the driver installer, it begins nagging about that it doesn't find the kernel source tree and something. There is not really much to say about it, other than that I really need help and I hope someone on this forum is willing to help a newbie like me.

try

./devdriver_4.0_linux_64_270.40.run --kernel-source-path /usr/src/linux-headers-2.6.38