An earlier post described how to configure the mouse pointer settings in Windows so that whenever Ctrl key is pressed, the pointer location can be easily identified.
Here is how to do the same in Linux Mint / Ubuntu :
1. Go to Menu and select Preferences > Mouse and Touchpad.
2. Enable the tick mark next to “Show position of pointer when the Control key is pressed”.
3. Test it out by pressing the Control key, the area where mouse pointer is located will glow in circular manner.