I have a couple of lines here you can type into your terminal screen in Chrubuntu that will make the trackpad work as you expect, the first line:
xinput set-prop “Cypress APA Trackpad (cyapa)” “Synaptics Finger” 15 20 256
sets the sensitivity of finger presses for the touchpad to a lower amount so it works like you would expect.
The second line:
-set-prop –type=int –format=8 “Cypress APA Trackpad (cyapa)” “Synaptics Two-Finger Scrolling” 1 1
Will get the two-finger scrolling working much like on the macbook pro or macbook airs trackpad.
Enjoy.