鼠标滚轮还是不能用！不知还有其它方法没有？

这是我的xorg。conf
# Identifier and driver

Identifier "Mouse1"
Driver "mouse"

# On platforms where PnP mouse detection is supported the following
# protocol setting can be used when using a newer PnP mouse:

# Option "Protocol" "Auto"

# The available mouse protocols types that you can set below are:
# Auto BusMouse GlidePoint GlidePointPS/2 IntelliMouse IMPS/2
# Logitech Microsoft MMHitTab MMSeries Mouseman MouseManPlusPS/2
# MouseSystems NetMousePS/2 NetScrollPS/2 OSMouse PS/2 SysMouse
# ThinkingMouse ThinkingMousePS/2 Xqueue
Option "Protocol" "IMPS/2"
Option "ZAxisMapping" "4 5"
Option "Buttons" "5"
# The mouse device. The device is normally set to /dev/mouse,
# which is usually a symbolic link to the real device.

Option "Device" "/dev/mouse"
# Option "Device" "/dev/psaux"
# Option "Device" "/dev/ttyS0"
# Option "Device" "/dev/ttyS1"
不知有问题没有，我记得以前用10的时候，就加入两行就可以了，现在是10.1，感觉对中文支持比较好了！( 是不是光电鼠标就不行了呢？)

我也遇到过这种事，
但是后来，
不知道怎么回事又好了。

Option "Device" "/dev/mouse"
# Option "Device" "/dev/psaux"
改为
#Option "Device" "/dev/mouse"
Option "Device" "/dev/psaux"

好象还是不行呢，真是奇怪呀，感谢各位的回复，只是不知还有其它好办法没？

我的配置文件里没有这句，
Option "Buttons" "5"。

今天鼠标滚轮终于可以用了，我只是把：
Option "ZAxisMapping" "4 5"
Option "Buttons" "5"
的顺序换了一 下：
Option "Buttons" "5"
Option "ZAxisMapping" "4
嘿，就可 以！谢谢各位的关心！

这是什么原因呢？哪位大虾解释一下。