How to configure the touchpad middle click?

In almost all the large modern Linux distributions and in the last releases of Ubuntu-based distributions the touchpad was configured out of the box to have right, left and middle clicks and you could configure them easily. The middle click is usually done with a two or three-finger tap.

In Ubuntu 12.04 I haven't seen where to enable the middle click and it is not enabled by default.

You can make it work and persist in Ubuntu 12.04, even afer suspending, following these steps.

First, create a file with your script:

echo synclient TapButton3=2 > ~/touchpad_settings.sh

(You could place the script in another directory, e.g. /usr/bin or /etc, if you wanted it to be in a more "generic" place, in case you have multiple accounts in your ubuntu installation.)

Then make it executable:

chmod +x ~/touchpad_settings.sh

And finally, run the following command replacing "user" with your user name:

gsettings set org.gnome.settings-daemon.peripherals.input-devices hotplug-command "/home/user/touchpad_settings.sh"

Then reboot, or logout & login, or restart GNOME.

That's all!

For more information about this fix, go here.

I was searching for this and I found out that the touchpad has different settings for taps at the corners, and if you tap at the bottom right corner it does Right click. But if you tap at the top right corner it does Middle click. This is the default setting.