FP2: Adaptive Brightness: Problems & it's Logic

Already since 2 months I am wondering about the logic of the “Adaptive Brightness” (=“Auto”) feature of the FP2 (or is it stock Android stuff?)…

As @freibadschwimmer already assumed, Auto is set on-top of the manual settings.
But until now, I could not find a good setting which sweets all situation I have (dark inside, bright outside).

My tests: “Auto” is enabled…:

  • If I set the manual value to the lowest value, the brightness does NOT increase in bright conditions at all (or I can’t notice it in the sun, thu I cant see anything outside).
  • If I set it to the max: it is at max (and eats battery like hell)!
  • If I set it to a middle value: It is far to bright inside, but reacts good in the sun and I can see something
  • If I set it to a very low value in the dark, to see enough but to save battery in the dark, in the sun it never becomes bright enough to seeing enough.

So, I am puzzled how to use this “feature”…
Can anybody help out and already undestood how it is/should working?

And I am afraid to try adjusting the “auto” values with gravity box (where for each light-sensor-value a brightness-value can be set between 0 and 255).

Comparison with FP1 - there it is that simple:

  • Set it manually to low/mid/bright
    OR
  • Use the Auto feature (which can be tuned with gravitybox for shifting it to a even lower or brighter level, or shift only the min/max of the auto-range)

So, again I am very surprised about this SMARTphone Auto-feature of FP/Google…

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