I recently used https://github.com/jloisel/t440p image to install Mojave to my T440p (without Nvidia). The clunky trackpad was replaced with a genuine Lenovo Synaptics T460 trackpad. Everything is fine except the 3 trackpad buttons do not respond.
me tooooo, precision 7540,but when I install an app: better and better ,there is a key-test in it ,I can find key pressed in it ,and with the app running , some button are working !
I don't know why
I download the app here : https://www.better365.cn/