Increase mouse cursor size on Ubuntu 20.04

Go to the Settings panel... choose Universal Access, then Cursor Size...

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dconf-editor still works for me in Ubuntu 20.04.01...

dconf-editor set mouse cursor to 60

Are you sure you clicked "Apply" (or changed the view) before exiting?

dconf-editor "Apply" bar


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Setting-->Accessibility-->Cursor Size Now you can choose from small to the largest.