How to use a second computer as an additional monitor (Linux Fedora 24)?
I use Ubuntu 18.10 and this shell tool https://github.com/mrenrich84/vnc_virtual_display_linker
if you are using x11 and x11vnc in your fedora 24 you could give it a try.
I use this to make a second screen with my Android Tablet (you just need a vnc client on the second screen device).
Mouse and Keyboard of my PC are also available on the second screen.