Comment 108 for bug 308191

@ Dana

You should not any tweaking for enabling multitouch or rather multitouch emulation for synaptics touchpad that does not support multitouch natively. Just do some tweaking with the original synaptics driver(emulation already present) in linux and get the emulation of it working.
See

$man synaptics

Also there's a bug report, that gives a well defined workaround for it. See the bugs in my lp page and search for similar bugs like this one.