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On most thinkpad, you need to modify /etc/X11/xorg.conf to enable scrolling with the trackpoint.
Trackpoint on Lenny
In /etc/X11/xorg.conf, find the section named "Configured Mouse", then follow the instruction :
Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
#add those three lines
Option "EmulateWheel" "true"
Option "EmulateWheelTimeOut" "200"
Option "EmulateWheelButton" "2"
EndSection
Trackpoint on Etch
In /etc/X11/xorg.conf, find the section named "Configured Mouse", then follow the instruction :
Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
#Comment this line out
#Option "Emulate3Buttons" "true"
#add those three lines
Option "EmulateWheel" "true"
Option "EmulateWheelTimeOut" "200"
Option "EmulateWheelButton" "2"
EndSection
Device identification
Device is a "TPPS/2 IBM TrackPoint":
dmidecode -t 21 reports
Built-in Pointing Device Type: Track Point Interface: PS/2 Buttons: 3- /proc/bus/input/devices contains: {{{I: Bus=0011 Vendor=0002 Product=000a Version=0000
N: Name="TPPS/2 IBM ?TrackPoint" P: Phys=synaptics-pt/serio0/input0 S: Sysfs=/class/input/input12 U: Uniq= H: Handlers=mouse2 event12 B: EV=7 B: KEY=70000 0 0 0 0 0 0 0 0 B: REL=3 }}}
See Also
How to configure the ?TrackPoint
http://thinkwiki.org/wiki/How_to_configure_the_TrackPointWhat’s so good about ?TrackPoint?
http://blog.10ninox.com/2007/12/10/whats-so-good-about-trackpoint/