On Tue, 1 Sep 2020 14:21:21 -0400 Bob Goodwin wrote:
Does anyone know how to produce "Fn" from a standard desktop keyboard?
Odds are good that is a special modifier key that only means something to the innards of the dell laptop.
You could try running xev on the dell and see if fn+f8 shows up at all as an event when you press it on the dell keyboard. I suspect it won't.