Have installed Arch Linux on my FW16 laptop. I am using the Awesomewm window manager although I don’t think that’s a factor.
I’m use to a tap (or is it a double-tap?) on the touchpad being the equivalent of a left-button click, but that does not seem to be happening for me out of the box.
The left (and right) buttons themselves on the touchpad do work, as well as moving the mouse cursor around as you would expect.
Well, it is in that there’s not a settings GUI or anything to toggle it on or off, but I was pretty sure that ultimately the configuration would boil down to something either in X11 or the touchpad driver.
That second link gave me a solution that works, namely create the file /etc/X11/xorg.conf.d/70-touchpad-settings.conf with the contents below, then reboot: