nvidia-installer log file '/var/log/nvidia-installer.log'
creation time: Wed Apr 10 18:06:29 2013
installer version: 310.44

PATH: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/etc/alternatives/gem-bin

nvidia-installer command line:
    ./nvidia-installer

Using: nvidia-installer ncurses user interface
-> License accepted.
-> Installing NVIDIA driver version 310.44.
ERROR: The Nouveau kernel driver is currently in use by your system.  This driver is incompatible with the NVIDIA driver, and must be disabled before proceeding.  Please consult the NVIDIA driver README and your Linux distribution's documentation for details on how to correctly disable the Nouveau kernel driver.
WARNING: The modprobe configuration file to disable Nouveau, /etc/modprobe.d/nvidia-installer-disable-nouveau.conf, is already present.  Please be sure you have rebooted your system since that file was written.  If you have rebooted, then Nouveau may be enabled for other reasons, such as being included in the system initial ramdisk or in your X configuration file.  Please consult the NVIDIA driver README and your Linux distribution's documentation for details on how to correctly disable the Nouveau kernel driver.
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.