Idiggplants, not sure if this will help. Of course I have to investigate and see what works. This is how I have mine set up and it seems to work without dimming unless I specifically set it to dim. In system settings, display, adjust brightness level, I have it set to manual. Then I have a toggle switch for screen brightness (I use widgetsoid because I can have all my toggles in the drop down notification bar where I can get to them at any time). Wherever I set my toggle on, it stays on that level until I toggle it to a different level. If I want it to 100% it will stay on 100% until I switch it. You can also customize the toggle brightness levels. Mine has 30, 50, 100 & auto. With this set up my screen never dims below the level I have it toggled at.
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