Thank you for reading this.
It's been a long time since I've played with Arduino and in the meantime I've replaced my dead desktop with a second hand Lenovo Thinkpad. I run Arduino under Kubuntu 17.04.
The problem is that the menu items (boards and examples) are too long for the screen and I'm unable to select those items that are off the screen. The menus don't scroll when I hit the bottom of the screen.
An Internet search hasn't revealed an answer. Is there a cure for this?