How do I ensure the mouse pointer is visible on all screens, size or colour?
Are you seeking to have duplicate cursors that move in harmony with eachother on all screens or are you looking to Wrap the mouse path to smoothly glide to all screens?
The pointer disappears when I move into software centre or task bar and have to guess its location.
That is not supposed to do that.
Are you using Nvidia Graphics?
In the meantime, let's remove and replace the module prober:
sudo modprobe -r psmouse
sudo modprobe psmouse
See if that causes the mouse to behave itself.
Just checked and yes nvidia installed. Do I need a fresh install or is there a coding I can make?
Can you try adding this repo in terminal
sudo add-apt-repository ppa:oibaf/graphics-drivers
then upgrade to see if this upgrades your drivers:
sudo apt update && sudo apt full-upgrade
That’s sorted it. Thank you