Just tried autobrightness again. All sliders are from 0 to 11, which mean all sliders are very low. Then, I closed the program, ensure auto brightness is on and power saving is off. I close the screen, wait 15 sec, open the screen, unlock, and.... full brightness! I tried restarting, no change. I always had that problem with this setting so either I'm missing something or I don't understand what I'm changing. (see attachment #1)
As for the "slider doesn't work on full install", it always behaved like that. BUT, there's something fishy with the slider. When it bump back because you put a value lower then last value, the number at the end of the slider stick to the number. So in the value field at the end, you can end up with a list going from 0,10,20,14,15,12 while the slider shows more.
As for #2, I'm unsure what you mean as by "There is no such thing". see attachment 2 and 3.
Thanks