Hello,
Herewith my finding. I am surprised that Mednafen brings you by default the driver Opengl, even on armhf ... really interesting.
Anyhow, the way to make it work is as follows.
Just replace Opengl by
SDL.
Code:
;Attempt to disable desktop composition.
video.disable_composition 1
;Video output method/driver.
video.driver sdl
as follows.
The debian jessie sources.list is :
Code:
#deb http://mirrordirector.raspbian.org/raspbian/ jessie main
#deb http://ftp.us.debian.org/debian/ jessie main
deb http://auto.mirror.devuan.org/merged/ jessie main
https://pastebin.com/raw/ysUtUHhg
