Touchpad and trackpoint speed in Ubuntu 12.04 + Thinkpad T420

I usually disable the touchpad in the BIOS, but I wanted to try it for “smooth scrolling” in Gedit 3. I found several issues:

* I want it to scroll in the whole surface, not just the right corner. For moving the mouse I have the trackpoint.
* The scrolling speed is way too fast.

This seems to fix it:

xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Edges" 32 0 0 0 0
xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Tap Action" 8 0 0 0 0 0 0 0
xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Edge Scrolling" 8 1 1 0
synclient VertScrollDelta=500

It works, but after testing it a bit, I ended up disabling it again. But I learnt something very interesting in the process: how to tune the trackpoint speed :).

Just add this to your /etc/rc.local and enjoy a faster trackpoint:

echo -n 150 > $TPDEV/speed
echo -n 200 > $TPDEV/sensitivity

Thanks to

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