I keep getting into this mode where the display gets very dim, if I click around enough I can get out of it, but can I set a minimum brightness level or something to avoid it? I’m mostly used to Debian with LXDE. I don’t want to reinvent the wheel. I just got DietPi running on an old Rock64, it’s the first thing I found that would boot and run.
It seems to be when there’s no active window that it goes dim.
With dietpi-config you can set the an autostart option to boot directly into the desktop environment. From CLI you can start it with startx or startlxde.