Encounted the same issue as schattenmeister.
Uae4all starts with configuration screen, inserted an adf in Df0, make sure 1.3 rom is selected (I have kick13.rom in /home/pi/RetroPie/BIOS folder). Press “reset”, it goes into a black screen.
(uae4all is running, I can see it from the top process list, just the screen is not shown up)
