PiPresents: Display correctly with screen in a vertical position?

[Tom775]

Have used PiPresents for several displays very satisfactorily, but due to space constraints need to use a screen in a vertical format. Have been unable to get PP to display correctly. It just displays like the screen is horizontal. I'm using a Pi4, Beep and a single HDMI display on HDMI0. All the screen references in the console @ start up indicate 1920 by 1080. The Pi screen layout editor is configured for vertical and other apps function as expected. Has anyone successfully deployed PP with a vertical screen?

Thanks for any help on this!
Tom

[aBUGSworstnightmare]

why not use the legacy driver instead of FKMS?
Then rotate the screen via config.txt and everything should work as expected

[Tom775]

I'm way out of my comfort zone when discussing FKMS, but per a note in the PiPresents docs for Beep(pg78) - when using a Pi other than a Pi4, it reverts to the legacy display system. I tried the same Buster/PP image in a Pi3b rotating the screen via config.txt with the same results!