Ubuntu – Touchpad tapping stopped working after Kubuntu 19.04 to 19.10 upgrade

19.10kubuntutouchpad

Today I've upgraded Kubuntu from 19.04 to 19.10 on my laptop and faced following issue – tapping doesn't work anymore. One-finger touchpad tap doesn't work as left click and two-finger touchpad tap doesn't work as right click too.

I opened system settings and found that tapping section is totally disabled, see screenshot.

Touchpad settings with tapping options disabled

How this issue could be fixed?

Best Answer

Googled a bit and found only one solution - edit Xorg config (you'll need sudo to do it). Maybe someone will suggest better one.

At first open /usr/share/X11/xorg.conf.d/40-libinput.conf and find touchpad section:

Section "InputClass"
        Identifier "libinput touchpad catchall"
        MatchIsTouchpad "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
EndSection

Then add two tapping options to the end of section so it will look as follows:

Section "InputClass"
        Identifier "libinput touchpad catchall"
        MatchIsTouchpad "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
        Option "Tapping" "True"
        Option "TapButton2" "2"
EndSection

Note: TapButton2 option as I found at https://wiki.archlinux.org/index.php/Touchpad_Synaptics#Frequently_used_options configures "which mouse-button is reported on a non-corner, two finger tap".

Logout&login and touchpad should start work correctly.

As a bonus now GUI tapping options are enabled, see screenshot.

enter image description here

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