I got an Acer Aspire F 15 F5-572G-56CU and my touchpad isn't working. I already go newest server-xorg-input-synaptics already installed. I break my head for about 2 days about this problem. New installed xubuntu on 1 disk drive with 1 partition. Hope somebody can help me.
Get the list of input devices and you will see, if the touchpad is recognized.
Also you can search the dconf-editor for the term "touchpad" to see, if its already enabled. Via Terminal:
Other suggestions here: