I installed a Gnome extension to indicate touchpad on or off.
I then set in control panel, when mouse is plugged in, disable touchpad.
Since then, the touchpad has remained disabled.
I have removed the extension, and enabled touchpad always.
I have also used the synaptics hot keys (function keys) on the Acer Laptop, to manually enable (toggle) the touchpad,
but without any results.
How can f