Stephen Evanchik

To enable this feature, type the following in to a terminal (you may need to be root):

 $ echo 1 > /proc/trackpoint/scrolling

Then press the middle button and push the stick up and down to scroll. Similarly, to disable scrolling:

 $ echo 0 > /proc/trackpoint/scrolling

There are quite few changes in this update, you can read more about them at ThinkWiki.org.

Download the patch:

I updated my TrackPoint driver to work with the new release.

The patch has been reorganized in the TrackPoint specific section and I’ve added the ability to configure the device from the /proc filesystem.

$ ls -l /proc/trackpoint/

total 0

-rw-r--r--  1 root root 0 2004-10-31 17:14 backup

-rw-r--r--  1 root root 0 2004-10-31 17:14 drag_hyst

-rw-r--r--  1 root root 0 2004-10-31 17:14 jenks_curv

-rw-r--r--  1 root root 0 2004-10-31 17:14 mb

-rw-r--r--  1 root root 0 2004-10-31 17:14 min_drag

-rw-r--r--  1 root root 0 2004-10-31 17:14 neg_inertia

-rw-r--r--  1 root root 0 2004-10-31 17:14 ptson

-rw-r--r--  1 root root 0 2004-10-31 17:14 sensitivity

-rw-r--r--  1 root root 0 2004-10-31 17:14 skip_back

-rw-r--r--  1 root root 0 2004-10-31 17:14 speed

-rw-r--r--  1 root root 0 2004-10-31 17:14 thresh

-rw-r--r--  1 root root 0 2004-10-31 17:14 up_thresh

-rw-r--r--  1 root root 0 2004-10-31 17:14 z_time

root:/proc/trackpoint# cat sensitivity 

250

root:/proc/trackpoint# echo 200 > sensitivity 

root:/proc/trackpoint# cat sensitivity 

200

root:/proc/trackpoint# echo 250 > sensitivity 

root:/proc/trackpoint# cat sensitivity 

250

Just echo values in to the files and you can dynamically configure the device’s characteristics. Be careful, some of these files are just boolean configuration options (ptson, mb and skip_back).