1, first you need to view the touchpad:
Command: XInput list
Results:
? Virtual core pointer id=2 [master pointer (3)]
? ? Virtual core XTEST pointer id=4 [slave pointer (2)]
? ? Macintosh mouse button emulation id=14 [slave pointer (2)]
? ? USB OPTICAL MOUSE id=15 [slave pointer (2)]
? ? IMPS/2 Logitech Wheel Mouse id=13 [slave pointer (2)]
? Virtual core keyboard id=3 [Master keyboard (2)]
? Virtual Core XTEST keyboard id=5 [slave keyboard (3)]
? At translated Set 2 keyboard id=6 [slave keyboard (3)]
? Lid Switch id=7 [slave keyboard (3)]
? Lenovo Easycamera id=8 [slave keyboard (3)]
? Sleep Button id=9 [slave keyboard (3)]
? Power Button id=10 [slave keyboard (3)]
? Video Bus id=11 [slave keyboard (3)]
? Power Button id=12 [slave keyboard (3)]
2, general, Touchpad are with PS/2 option:
To disable the touchpad:
XInput set-prop "Imps/2 Logitech Wheel Mouse" "Device Enabled" 0
Enable Touchpad:
XInput set-prop "Imps/2 Logitech Wheel Mouse" "Device Enabled" 1
3. See if the success
Command: XInput list-props "IMPS/2 Logitech Wheel Mouse"
Result: Device ' imps/2 Logitech Wheel Mouse ':
Device Enabled (138): 0
When you see the value here, it is 0, indicating that the above settings have worked