如果你的系統是Ubuntu10.10之前的版本，編輯/etc/X11/xorg.conf，找到：
Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
#加入以下三行
Option "EmulateWheel" "true"
Option "EmulateWheelTimeOut" "200"
Option "EmulateWheelButton" "2"
如果你的系統是Ubuntu 10.10之後的版本，找到目錄/usr/share/X11/xorg.conf.d/，然後新建一個文件20-thinkpad.conf，即：
cd /usr/share/X11/xorg.conf.d/
sudo vi 20-thinkpad.conf
將下面一段拷貝進去，重啟X-window即可：
Section "InputClass"
Identifier "Trackpoint Wheel Emulation"
MatchProduct "TPPS/2 IBM TrackPoint|DualPoint Stick|Synaptics Inc. Composite TouchPad / TrackPoint|ThinkPad USB Keyboard with TrackPoint|USB Trackpoint pointing device|Composite TouchPad / TrackPoint"
MatchDevicePath "/dev/input/event*"
Option "EmulateWheel" "true"
Option "EmulateWheelButton" "2"
Option "Emulate3Buttons" "false"
Option "XAxisMapping" "6 7"
Option "YAxisMapping" "4 5"
EndSection
希望幫助需要的朋友。
