[SOLVED] HDMI screen rotation doesn't "stick"

[MJR42]

I need to move on to some other things for a few hours/days, but I couldn't resist checking a few things. I tried the following as an obvious quick test

Code:

DISPLAY=:0 xrandr --output HDMI-1 --rotate left

It does rotate the display, and it looks like the system is using 800x480 in 480x800 mode, and the touch display is not aligned at all. Not looking for a reply yet, just letting you know that it's something to do with the X system, so I'll be exploring the rest of your thoughts to see if I can get this all to work.

I'm hoping that the realignment of the touch system that I was using under Buster will also work here - why not? It's part of the X system.

I'll report back whether I solve this or not - just wanted to say thanks for such a quick and helpful response.