How to simulate middle mouse click in Loki?

Question

The middle click button of the mouse I use is broken, so I'd like to simulate it by pressing left and right mouse buttons at the same time.

In Freya, I could do:

xinput set-prop "Wireless Optical Mouse" "Evdev Middle Button Emulation" 1

But in Loki, I get this message:

property 'Evdev Middle Button Emulation' doesn't exist, you need to specify its type and format

I'd like the simulation to persist across reboots and suspends.

Answer 1

I got this working. Firstly I needed to change the property name. Then I could use that with the xinput command inside ~/.profile. Thanks to this Unix Stackexchange answer, I am able to execute the xinput command after each unlock.

Here's what I added to my ~/.profile:

simulate_mouse_middle() {
    xinput set-prop "Wireless Optical Mouse" "libinput Middle Emulation Enabled" 1
}

simulate_mouse_middle

dbus-monitor --session "type='signal',interface='com.ubuntu.Upstart0_6'" | \
(
    while true; do
        read X
        if echo $X | grep "desktop-unlock" &> /dev/null; then
            simulate_mouse_middle
        fi
     done
) &