Ubuntu 18.04 touchpad not fully working after wake from suspend

Reloading the touchpad / mouse driver after resuming from suspend works in most cases.

Run sudo -H gedit /lib/systemd/system-sleep/touchpad

Copy and paste in these lines:

#!/bin/bash

if [[ $1 == post ]]; then
    modprobe -r psmouse
    modprobe psmouse
fi

Save the file and exit.

Now make it a program by setting the execution bit:

chmod a+x /lib/systemd/system-sleep/touchpad

You will need to reboot for changes to take effect.

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