按照如何安装显卡的驱动程序 (NVIDIA)
1。sudo apt-get install nvidia-glx
2.sudo apt-get install nvidia-settings
3.sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf_backup
4.sudo nvidia-glx-config enable
5.sudo gedit /usr/share/applications/NVIDIA-Settings.desktop
但当进行到第四步sudo nvidia-glx-config enable后出现提示：
A backup of xorg.conf has been stored as:
/var/backups/xorg.conf.2006-05-04-16:33:32.
If the new configuration will not work you will be able to
revert the changes simply using this command:
cp /var/backups/xorg/xorg.conf.2006-05-04-16:33:32 /etc/X11/xorg.conf
Warning: your X configuration has been succesfully changed.
In order to take full advantage of the changes, X needs to
be restarted.
请问是什么原因？如何解决呢