[GTALUG] Gnome on Fedora 28 silent change blindsided me

[D. Hugh Redelmeier]

I'm used to notebook touchpads emulating left and right buttons with the 
lower portion of the touchpad.  Clicks elsewhere on the touchpad count as 
left clicks.

Silently, the new gnome that comes with Fedora 28 defaults to treating all 
clicks as left clicks.  At least on my Acer Apire E11's touchpad.  To get 
a right click, one is supposed to tap with two fingers.

It can be configured back to the old behaviour, but this requires the 
gnome-tweak-tool (or a weird command in a shell window).  Not very 
"discoverable"!

This took me a while to figure out.

<https://bugzilla.redhat.com/show_bug.cgi?id=1573537>