I am running arch linux with gnome desktop on a Lenovo Thinpad X230. Some time ago gnome 3.20 was released and apparently the synaptics driver is not supported any more.
The only reason I ran into this was because “tap to click” was turned on all of sudden and it interfered with my typing.
Initially, I heeded the advice on the synaptics wiki page: “Synaptics is no longer supported under GNOME. Migrate to libinput.” but the libinput driver was intolerably slow on my system even though I cranked the touchpad speed up to the max.
Anyway, I went back to the synaptics driver and disabled the irritating “tap to click” behaviour by setting the following values in /usr/share/X11/xorg.conf.d/50-synaptics.conf:
Section "InputClass"
Identifier "touchpad catchall"
Driver "synaptics"
MatchIsTouchpad "on"
Option "TapButton1""0"
Option "TapButton2""0"
Option "TapButton3""0"
EndSection
I hope this helps
