Comment 11 for bug 669399

@juliobahar.

I am able to scroll correctly on my computer. The issue you are having may be configuration related.G-pointing devices is a bit tricky to use (even when everything is working perfectly) Here are some things to check:

1) Its my understanding that g-pointing wont even work unless you add the SHMConfig On option to your xorg.conf file. Basically without this the synaptics driver cant have its options changed during runtime. This is my /usr/share/X11/xorg.conf.d/50-synaptics.conf file..

Section "InputClass"
        Identifier "touchpad catchall"
        Driver "synaptics"
        MatchIsTouchpad "on"
        MatchDevicePath "/dev/input/event*"
        Option "SHMConfig" "on"
EndSection

note the last line . .. this is required ..

2) I dont think that changes made with g-pointing devices will be effective at startup, or after sleep without some scripts installed. If you want to mess with it check out https://help.ubuntu.com/community/SynapticsTouchpad.

3) Personally I found it easier to deal with this at the command line using synclient. Basically find out what works by typing in the commands (synclient option=value) then put the commands into the 50-synaptics.conf.

synaptic options: http://manpages.ubuntu.com/manpages/karmic/man4/synaptics.4.html
how to use: http://wiki.ubuntu.org.cn/UbuntuHelp:SynapticsTouchpad/ShortcutKey

Let me know if this works for you . ..