To disable: xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Off" 8 1
To enable: xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Off" 8 0
To disable:
xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Off" 8 1
To enable:
xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Off" 8 0