how to fix touchpad tapping after Fed26 update

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Hi,

I have just upgraded an HP laptop from Fed 25 to 26. All seems fine except that the tap-to-click functionality on the synaptics touch pad no longer works.

I have verified that the configuration I put in to enable it did not get removed by the update:

File: /etc/X11/xorg.conf.d/99-synaptics-overrides.conf

Section "InputClass"
    Identifier   "touchpad"
        Driver  "synaptics"
        MatchIsTouchpad "on"

        Option  "TapButton1"  "1"
        Option  "TapButton3"  "2"
        Option  "TapButton2"  "3"
        # Enable vertical scrolling
    #    Option  "VertEdgeScroll"  "1"
    #    Option  "VertTwoFingerScroll" "on"
    #    Option  "HorizTwoFingerScroll" "on"

    #    MatchDevicePath  "/dev/input/event*"
    EndSection

Can anyone explain why this has stopped working and what I need to do to restore it?

TIA, Freddy