装gsynaptics包

yum install gsynaptics
gedit /etc/X11/xorg.conf

在synaptics那里面加上下面的红字

Section "InputDevice"
Identifier "Synaptics"
Driver "synaptics"
Option "Device" "/dev/input/mice"
Option "Protocol" "auto-dev"
Option "Emulate3Buttons" "yes"
Option "SHMConfig" "on"
EndSection

注销，重新登录，在系统－>首选项－>硬件－>触摸板 里设置一下就好了。