I have a Lulzbot Mini, and I attached the LCD display. Then, in Cura I went to update the firmware, and under machine settings, as shown in the first screenshot, there's no box for the LCD.
It wasn't until later I discovered I could widen the window and see the checkbox, as shown in the second screenshot. I learned that this is a gnome issue, as you can't double click the header bar to make it full screen, only by bringing the mouse to the edge of the window can you widen it.
This is in Cura 3.2.14