@zing - How about with an X86_64 build of Recalbox 8 using a good old fashioned VGA port, is there a way to rotate the screen to 90/180/270 degrees? I've looked all over but can't seem to find any solution to what should be a trivial exercise - everything I find either talks about Raspberry Pi rotating their HDMI ports using config.txt or emulationstation.conf files which don't exist on Recalbox 8...
-_-
I would've thought there's so many people using vertical/portrait screens that this would be in some configuration how-to somewhere, but frustratingly, just isn't found anywhere!!