Comment 2 for bug 35014

i just recieved an email from Nacho de los Rios and thanks to his solution touchpad works great:
edit /etc/X11/xorg.conf
Add this section below the ps2 mouse's
Section "InputDevice"
       Identifier "Synaptics Touchpad"
       Driver "synaptics"
       Option "SendCoreEvents" "true"
       Option "Device" "/dev/psaux"
       Option "Protocol" "auto-dev"
       Option "HorizScrollDelta" "0"
EndSection

then add:
    InputDevice "Synaptics Touchpad"
in the ServerLayout section, for example:
Section "ServerLayout"
       Identifier "Default Layout"
       Screen "Default Screen"
       InputDevice "Generic Keyboard"
       InputDevice "Synaptics Touchpad"
EndSection

restart and it should work at least for acer 1694wlmi laptops.