Comment 75 for bug 565543

In re-revert + ALPS_DUALPOINT case of #70, I found synaptics driver loaded.

(II) config/udev: Adding input device AlpsPS/2 ALPS DualPoint TouchPad (/dev/input/event9)
(**) AlpsPS/2 ALPS DualPoint TouchPad: Applying InputClass "evdev pointer catchall"
(**) AlpsPS/2 ALPS DualPoint TouchPad: Applying InputClass "evdev touchpad catchall"
(**) AlpsPS/2 ALPS DualPoint TouchPad: Applying InputClass "touchpad catchall"
(II) LoadModule: "synaptics"
(II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so
(II) Module synaptics: vendor="X.Org Foundation"
        compiled for 1.7.6, module version = 1.2.2
        Module class: X.Org XInput Driver
        ABI class: X.Org XInput driver, version 7.0
(II) Synaptics touchpad driver version 1.2.2
(**) Option "Device" "/dev/input/event9"
(II) AlpsPS/2 ALPS DualPoint TouchPad: x-axis range 0 - 1023
(II) AlpsPS/2 ALPS DualPoint TouchPad: y-axis range 0 - 767
(II) AlpsPS/2 ALPS DualPoint TouchPad: pressure range 0 - 127
(II) AlpsPS/2 ALPS DualPoint TouchPad: finger width range 0 - 0
(II) AlpsPS/2 ALPS DualPoint TouchPad: buttons: left right middle
(--) AlpsPS/2 ALPS DualPoint TouchPad: touchpad found
(**) AlpsPS/2 ALPS DualPoint TouchPad: always reports core events
(II) XINPUT: Adding extended input device "AlpsPS/2 ALPS DualPoint TouchPad" (type: TOUCHPAD)
(**) AlpsPS/2 ALPS DualPoint TouchPad: (accel) keeping acceleration scheme 1
(**) AlpsPS/2 ALPS DualPoint TouchPad: (accel) acceleration profile 0
(**) AlpsPS/2 ALPS DualPoint TouchPad: (accel) acceleration factor: 2.000
(**) AlpsPS/2 ALPS DualPoint TouchPad: (accel) acceleration threshold: 4
(--) AlpsPS/2 ALPS DualPoint TouchPad: touchpad found
(II) config/udev: Adding input device AlpsPS/2 ALPS DualPoint TouchPad (/dev/input/mouse2)

Since vertical scroll, horizontal scroll and disabling 'tap to click' don't work in this case, it seems the synaptics driver doesn't handle DualPoint TouchPad properly.