一、滚动
新的发行版，比如说Ubuntu 8.10和Fedora 10已经开始使用udev和HAL来配置输入设备了，不再需要修改xorg.conf了。以root身份创建“/etc/hal/fdi/policy/mouse-wheel.fdi”：
<match key="info.product" string="TPPS/2 IBM TrackPoint">
<merge key="input.x11_options.EmulateWheel" type="string">true</merge>
<merge key="input.x11_options.EmulateWheelButton" type="string">2</merge>
<merge key="input.x11_options.XAxisMapping" type="string">6 7</merge>
<merge key="input.x11_options.YAxisMapping" type="string">4 5</merge>
<merge key="input.x11_options.Emulate3Buttons" type="string">true</merge>
<merge key="input.x11_options.EmulateWheelTimeout" type="string">200</merge>
</match>立即生效，重启就没了。装了sysfsutils的话就可以每次重启都配置一次。其他的设定：
| Name | Type | Default | Notes |
|---|---|---|---|
| sensitivity | Integer | 128 | Sensitivity |
| speed | Integer | 97 | Cursor speed |
| inertia | Integer | 6 | Described as "negative inertia." It acts more like friction. High values cause the cursor to snap backward when the Trackpoint is released |
| reach | Integer | 10 | Backup for Z-axis press |
| draghys | Integer | 255 | Drag hysteresis (how hard it is to drag with Z-axis pressed) |
| mindrag | Integer | 20 | Minimum amount of force needed to trigger dragging |
| thresh | Integer | 8 | Minimum value for a Z-axis press |
| upthresh | Integer | 255 | Used to generate a 'click' on Z-axis |
| ztime | Integer | 38 | How sharp of a press |
| jenks | Integer | 135 | Minimum curvature for double click |
| press_to_select | Boolean | 0 | Press to select |
| skipback | Boolean | 0 | Supress movement after drag release |
| ext_dev | Boolean | 0 | Disable external device |
