[bagou01]

Hi
something bothers me a bit in lollipop. I always have my screen brightness set to auto adjust.
since lollipop i get a brightness slider in the quick settings... however, even with screen set to auto, i still can move the slider to adjust... which makes no sense according to me?
i mean, i set my brightness to auto, then move the slider full right, then the screen is full bright, but the widget still says auto... is this a bug? or is it still "auto" but brighter ? or what?

[B. Diddy]

After you adjust it, does it auto adjust back to where it was a few seconds later?

[bagou01]

no
not at all, and i even got the feeling that the brightness is not anymore set to auto, even though the widget says it is.
i tried hiding sensors with my fingers and putting it next to my lamp, but screen didn't change brightness...

[N4Newbie]

My understanding is that the slider essentially lets you set the mid point of the range used by Adaptive Brightness. In other words, if you set the slider to the 50% mark, Adaptive Brightness will auto adjust the actual brightness to a level between 30 and 70%.

If you set the slider to 80%, then Adaptive Brightness will use a range of 60% to 100%,

[bagou01]

and why can we not set it to go between 0 and 100 ?

[N4Newbie]

and why can we not set it to go between 0 and 100 ?

It is what it is.

You could always quit Android and go over to the iPhone side. Not sure you'll find anything better over there though.

[N4Newbie]

no
not at all, and i even got the feeling that the brightness is not anymore set to auto, even though the widget says it is.
i tried hiding sensors with my fingers and putting it next to my lamp, but screen didn't change brightness...

Go to Settings -> Display and make certain that Adaptive brightness is enabled.

[butterfly210]

With all the bugs and features being removed I hope when lollipop is released for note 4 Samsung get this itch right!!

*My Sexy Note 4*

[B. Diddy]

N4Newbie is correct. Here's an article from Android Police about Adaptive Brightness: Android "L" Feature Spotlight: Auto-Brightness Is Gone, "Adaptive Brightness" Takes Its Place

[rasterize]

Apparently Verizon GS5 didn't get adaptive brightness. We're stuck with a now modified auto brightness that biases waaay too low. Grrrrrr

[EMarioC2015]

Okay this is all less than clear at least for me. I have discovered how it does works with the help of folks on this tread and what I tried and found for myself.

1. Set Display to Adaptive
2. While still in the Display setting
3. Select Brightness
4. Uncheck Automatic brightness
5. Select a brightness by using that slider
6. When done Check the Automatic brightness box
7. Backout of the setting menu
8. Place the phone in a dark place (just under your desk maybe)
9. Give it a 15 seconds and watch the screen get dimmer (depending on where you set the auto brightness slider in #5)
10. Remove the phone from the dark place to a bright or brighter place (on my desk for me)
11. Watch it get brighter!

Still experimenting but this does get a response of the display changing based on light bouncing off the screen

[zorak950]

I really love the new system: it lets you choose the relative brightness level you're comfortable with while still allowing auto-adjustment. Simple, easy.

[robertebrown94306]

I have AT&T version of the Samsung Galaxy S4. I can't get reasonable brightness
no matter what I do...and I think this problem began when AT&T downloaded
Lollipop 5.01.

[Minato09]

I have ASUS ZenFone 2 how to disable adaptive brightnessq

[N4Newbie]

I have ASUS ZenFone 2 how to disable adaptive brightnessq

If it's anything like stock Lollipop 5.x, Settings -> Display -> Adaptive Brightness.

[Minato09]

I tried many times to search adaptive brightness but there was no such option

[DLK1]

I tried many times to search adaptive brightness but there was no such option

What make/model phone do you have?

[neu smurph]

From using my Moto G and experimenting with quickly switching between adaptive with the slider at various levels and different values of fixed manual brightness I don't think the adaptive slider is setting a 'midway' I think it is setting a minimum for adaptive brightness.

[Minato09]

Ze 551 2 GB 16 gb

[Flissa]

Just upgraded my Samsung Core Prime - no brightness control at all. Couldnt get any response from slider and stuck with very bright screen and eating battery life. Soooooo went to Playstore and searched for free brightness control apps. Installed the first suggestion and it works beautifully. My old slider is back and I have perfect control again! Simples.

[sethidheeraj06]

It is not a bug in lollipop.. It is a facility provided by google that if u have set brightness to "auto".. And after that u want to dim the light.. Or increase the light .. So u can ..

[vijyes Yechuri]

It is adaptive brightness. Slider determines the sensitivity of the brightness in case adaptive brightness is turned on. If you keep the slider on 50%, it will work the same as auto brightness. If it is 30%, then the brightness will be equal to the brightness of the external illumination which is 20% less than current illumination. So, essentially it helps people save power or improve readability by adjusting the sensitivity of brightness according to individual preference. Just keep the slider on 0% and then shine a bright torch at the sensor. You will find that the screen brightness goes to 100% thus vindicating my claims

[Karlman Lee]

Aha, i just happen to check this issue recently, after digging into the source code carefully, i found that was designed by google. With Auto Brightness option turned on, when you are moving the slider, you are changing the gamma value instead of changing the screen brightness directly, then the gamma value and the Lux value of ambient light will be used by certain algorithms to calculate the final screen brightness.