Database Users

Auto screen brightness doesn't work?

When I have my nexus one set to automatically adjust brightness, it doesn't seem to do anything.
I can move it between dark and bright environments and the screen brightness doesn't seem to change at all. Am I missing something or is this feature not working on my phone?

It works fine with mine. I just clicked auto in the brightness setting. Make sure you didn't accidentally change it to a different setting with the settings widget that is by default on the first home page to the right.

works fine on mine yet not a feature i use....i just set it statically.

I find the auto-brightness to be too dim for my liking. It would be great if you could adjust the overall brightness while still maintaining the automatic scaling.

Turns out it does work, it just need to be *really* bright to make it change.
It doesn't change really at all in my office between switching the lights on and off (even though that's a really big change in light levels to me). However, if i go outside, it does get brighter.
As you say though, it does seem to be set a bit low (hence it not brightening up when my office lights are turned on I guess).

If I enable auto-brightness on mine, it seems to constantly vary the brightness in my office. It's annoying as crap and I turned it off. Am I the only one?

It's probably taking a look at the available APIs to see if it's easy to write a quick app to do auto brightness with settings to be able to tweak it.

The auto-brightness feature changes constantly for me as well.

I 'm also having issues of the varying brightness when using auto-brightness -- even though the lighting in my environment has not changed and I avoid contact with the light sensor. It's VERY annoying.
I've since switched to using a static setting for the brightness.

auto brightness was one of the first things i turned off. it was way too dim for me

Not bright enough for me. Doesnt seem to change much.

I do see the variability occasionally. Most of the time it's stable, but it will take spells of shifting up and down repeatedly. Glad to know I'm not alone.

Auto bright annoyed me as well when I first got the phone. Then I realized where the sensor is (top left) and what it was responding to. Depending on where I'm sitting, what light sources are behind me, in front of me but reflecting off of me. It's usually just responding to a light source that's just withing view of its sensor. Also, my hand has shielded the sensor more than just a few times, confusing the sensor.
Now I leave auto bright on all the time, and it more often than not does a good job.

IMHO this is one of the few broken features on the phone. In continuous lighting it jumps from bright to dim to everything in between like a jack rabbit on speed. I still use it to save battery life but it pisses me off regularly.

am also having this problem. it constantly goes much brighter, and then, suddenly goes back to dim.. very annoying... however, the light sensor for calling works well... so, is it a software issue.. hope it gets google's attention and gets fixed in next update...

Bicster_ said:
If I enable auto-brightness on mine, it seems to constantly vary the brightness in my office. It's annoying as crap and I turned it off. Am I the only one?
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+1 so I also manually go between three on the widget

Note that the light sensor is under the glass on the front of the phone. Some cover-all cases cover this, and if you use one of these I assume your phone will remain on the dimmest setting.
In general, while indoors it will remain on the dimmest setting (for me anyway), but rise to the necessary full brightness when in sunlight.
w00yee said:
am also having this problem. it constantly goes much brighter, and then, suddenly goes back to dim.. very annoying... however, the light sensor for calling works well... so, is it a software issue.. hope it gets google's attention and gets fixed in next update...
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There are two sensors, one is a light sensor and the other is a proximity sensor to detect when you've taken the phone from your ear. I think you're referring to the second.

w00yee said:
am also having this problem. it constantly goes much brighter, and then, suddenly goes back to dim.. very annoying... however, the light sensor for calling works well... so, is it a software issue.. hope it gets google's attention and gets fixed in next update...
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+1 constant occiliation on dimmness levles under consistant light. It goes from way too dim, to just right then back dark again. I too hope that google will correct this with the next update. Hopefully the patch gets pushed soon, i'd like that extra memory

Auto brightness not working correctly

When I'm in a light room the screen goes brighter but if I walk into a darker room, the screen doesn't dim unless I lock and then unlock the screen.
Anyone else having similar issues?

Yep got the same here. Thought I had a faulty ambient light sensor but obviously not.
Sent from my SM-G935F using Tapatalk

Just tried it by covering the light sensor to make sure, no problem here (G935F). My only concern related to brightness is that the s7 just has auto brightness, but no adaptive brightness.

Uncheck the auto box and recheck. Then don't touch the slider. It's usually because in marshmallow the slider moves with the auto bright and most people touch it which makes it hold position.

jackdforme said:
Uncheck the auto box and recheck. Then don't touch the slider. It's usually because in marshmallow the slider moves with the auto bright and most people touch it which makes it hold position.
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There seems to be a bug somewhere still. I just tried to move the slider while auto brightness is ticked and to cover the light sensor afterwards again and it still worked and to my surprise it even took into account that I lowered the brightness and took also a lower brightness at the covered state and took my initial setting after uncovering, pretty nice, so there is indeed still adaptive brightness. After ticking und unticking auto it went back taking the default steps for brightness as before.

Having the same issue here

Definately not touched the slider.
Also, I have tested the light sensor and it appears to work fine so definately a software issue. Though I imagine we will see some software updates to fix bugs shortly after the official release date.

So you can adjust the slider with the box checked and get various levels of auto? Does it learn?

jackdforme said:
So you can adjust the slider with the box checked and get various levels of auto? Does it learn?
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Yes.
I can't tell for sure, when I change further steps the previous seems to stick, at least to some extend so there is a logic behind it, but I can't tell for sure if it really is based on each step and sets it accordingly or if it's just changes the range it operates in. Anyways I'm a happy camper.
Also, I could reproduce the device not changing the brightness, when I put it to full at darkness it won't move anymore in auto. But as soon as I lower it again it will also change accordingly again, maybe at those with the stuck brightness the min brightness is only raised, but not lowered anymore, but just an assumption and doesn't help anyone atm unfortunately.

Use lux in play store
Sent from my SM-N920W8 using Tapatalk

https://play.google.com/store/apps/details?id=com.velis.auto.brightness

This is the first Galaxy phone I had, that Auto brightness actually works the way I like it.

It seems to be working fine now. It just takes a few seconds for the screen to dim (maybe I was being impatient).
After testing it further it's actually really good auto brightness.

It works, just takes some time to adjust to the lighting. Maybe the default settings are set to a certain time. Maybe with root we can adjust this..

AngioNicholai said:
It works, just takes some time to adjust to the lighting. Maybe the default settings are set to a certain time. Maybe with root we can adjust this..
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It seems to only do it quickly when the device is lay down (as 954wrecker said). Maybe Samsung did that so it doesn't annoy you when using your phone.

this is definitely a bug imo... the auto brightness doesn't change for me either...

CuBz90 said:
When I'm in a light room the screen goes brighter but if I walk into a darker room, the screen doesn't dim unless I lock and then unlock the screen.
Anyone else having similar issues?
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I also have an auto briteness issue, when I disable AutoBrite and set it manually about half my apps override the setting and enable AutoBriteness in the app's screen usually dimming the screen? SpadesFree one example and I do not see an override in the app.

Confimed that I'm having same issue, auto brightness not adjusting and slider not movingoing. Have to move it manually

Same issue. It needs to be fixed manually by editing services.jar (root needed)
Nothing else will work. None of google play apps will help with that issue. Does not matter what you do, it will always dimming if you don't fix it in framework.jar

Try it out: http://forum.xda-developers.com/s7-edge/development/auto-brightness-bug-try-fix-t3339858

Screen turns on slowly

Whenever I unlock my device the screen turns on noticeably slow, it's like it's trying to transition but it isn't smooth so it feels off.
What is strange is that this doesn't happen when my phone is tilted at a <45° angle, it just powers on almost instantly with no slow transition. Anyone have a similar issue or know of how to fix this?
Edit: I take the angle back, it seems to be ambient lighting based. Still not sure how to disable this "feature"

Mine is extremely fast
Sent from my SM-G935W8 using Tapatalk

Zeffir said:
Whenever I unlock my device the screen turns on noticeably slow, it's like it's trying to transition but it isn't smooth so it feels off.
What is strange is that this doesn't happen when my phone is tilted at a <45° angle, it just powers on almost instantly with no slow transition. Anyone have a similar issue or know of how to fix this?
Edit: I take the angle back, it seems to be ambient lighting based. Still not sure how to disable this "feature"
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Yeah it is affected by ambient light sensor... just tested it myself now... but sayin so.. might also be affected by the low battery,

misiokicio said:
Yeah it is affected by ambient light sensor... just tested it myself now... but sayin so.. might also be affected by the low battery,
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I'm guessing it's purpose is so it doesn't turn on too bright in dark or dimly lit rooms and allows your eyes to adjust. Which is a nice feature now that I think about it, I've been blinded by previous phones numerous times when I turned them on at night. I don't know though, it just lacks a certain smoothness that the device's other animations have.

What bothering me the most is that we can't adjust the brightness on the always on display... is too bright

Zeffir said:
Whenever I unlock my device the screen turns on noticeably slow, it's like it's trying to transition but it isn't smooth so it feels off.
What is strange is that this doesn't happen when my phone is tilted at a <45° angle, it just powers on almost instantly with no slow transition. Anyone have a similar issue or know of how to fix this?
Edit: I take the angle back, it seems to be ambient lighting based. Still not sure how to disable this "feature"
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In display settings you have an option called "keep screen turned off", which prevents the screen turning on accidently in dark places such as a pocket or bag.

ZE552KL screen flickering at lowest brightness level

I would take a video of this issue, but I don't have a good enough camera. It's really, really hard to capture unless you have good video recording tech, which I don't have. :crying:
My issue is that, when I set the brightness to its lowest level on my Zenfone 3, the screen starts flickering. This is especially noticeable with white backgrounds. You can tell that the screen is flickering (perhaps refreshing?) rapidly and it makes the phone painful to look at.
Someone actually created a thread about this issue here on XDA a few months ago, with a video showing this issue, but unfortunately, the video doesn't capture the flickering properly. Here: https://forum.xda-developers.com/zenfone-3/help/ze520kl-low-screen-light-level-20-t3603502
How to reproduce:
-Turn auto-brightness off
-Slide brightness bar all the way to the left (AKA to the lowest level)
-Open a white background/grayish background or blank page in Chrome
-Screen starts flickering
It happens across the phone, and intermittently. Sometimes it happens, sometimes it doesn't. In Chrome, in games, whatever. I once thought it could be related to charging the phone, but the screen has flickered on low brightness even when my phone wasn't plugged in, and at 70-80% battery. I might try resetting the phone to see if it's a software defect; I really hope it is.
Turning off hardware overlays in Developer Options does not resolve this issue.
I'm currently on ASUS stock Nougat, unrooted. I can't root right now. I don't have any screen overlays apart from CF.Lumen, which isn't set to come on during the day, when the flickering happens, and I don't use any screen color modes apart from the default settings. I also always have auto-brightness turned off.
Just wondering if anyone else is having this issue. I might try recording it one day.
Thanks.

Update 1: Removed my 64GB SD Card from the phone to see if that made a difference. It didn't. So the flickering isn't related to power management, AFAIK.
Next step is to wipe the phone completely, including its cache partition from stock recovery, and set the phone up as new again. It might be a hardware issue, but my fingers are crossed.

I've had this issue since I got the phone, ZE552KL. Turning off auto brightness fixes it for me, so I have a feeling it has more to do with ASUS' auto brightness algorithms than anything else.

sensi277 said:
I've had this issue since I got the phone, ZE552KL. Turning off auto brightness fixes it for me, so I have a feeling it has more to do with ASUS' auto brightness algorithms than anything else.
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I always have auto-brightness turned off. I think it might have to do with the ambient light sensor. I've tested it using SMMI and it works just fine. But I wish there was a way to disable it, since I don't need it. I'm kind of disappointed in this phone.
I'm going to try a full reset, and perhaps a custom ROM to see if it's a hardware or software issue.

Does OP have control over adaptive brightness (6T) or is that all Pie? [issue]

EDIT: Wrong subforum, sorry.. please move to Q&A
Very happy with my 6T so far. Adaptive brightness has been a little bit wonky.
I work at my computer in a relatively dark environment. When I wake up my phone and look at it, brightness starts off around 15% and I can barely read the display. I hold my phone screen up to my monitor to get adaptive brightness to kick in, and brightness quickly goes up to about ~80% as expected. Then when I face it back towards me, it finally settles back in around 40% after a few seconds and stays there, which is perfect for my environment.
It seems like there's some kind of issue with adaptive brightness initializing the ideal brightness in a dimly lit environment. Yet it knows where the brightness should be set after it has been exposed to more light.
Is this all part of Android Pie or does OnePlus have some control over how this works?

Pie issue, I believe there is an app that helps, can't recall what the name is, most people seem happy with it.

Thread moved to Q&A

Mine does similar ,screen brightness fine ,then if unlock it comes back on very dim and I have to alert it in settings and adaptive doesn't always seem to work

The impression I get is that it isn't a learning adaptive as you see with Samsung, Pixel, and so on. You just get the same answer for the lighting every time it wakes up, or at least that's what I'm getting from mine.

Adaptive brightness is fully controlled by Pie. You can't set the base brightness in Pie and then let adaptive brightness control it from there.

Yeah I noticed the same thing too just a few days ago. Initially the phone handled fine, but now is always too low. Not sure where the sensor is, and if it is covered by the oem screen protector. If so then maybe that is the issue . The plastic OEM is a smudge magnet.

Yeah this was really annoying me last night. The brightness was fine, then I lock the screen, unlock and the screen is dim compared to before despite the light level staying the same. If I swipe down quick settings and toggle auto brightness off and on again it goes back up so it seems to be the auto brightness not picking up the correct level after unlocking the phone.

Guys have a read about adaptive brightness in Pie. Basically it learns from your behavior. You have to adjust it constantly to your liking and then the phone will learn after a week. Mine is noticeably better after 9 days. Almost perfect I would say. You just have to let it adapt and don't stop adjusting the brightness manually with adaptive option on.

App store, "Velis Auto Brightness", prolem solved..

I've noticed that the adaptive brightness is quite crap in oos. I never like adaptive brightness until I used a pie rom on my 5t, but op did something to the adaptive brightness and it definitely is not as good as Googles version

Guys Goog has just now announced they've added their learning adaptive brightness feature into Pie, and it's up to OEMs to use it at their discretion, Samsung for instance has their own learning adaptive brightness already in use. In any event this phone does not appear to have it. I had a Pixel XL 3 and the brightness there really is learning, you can it adjusting immediately and see a solid difference in a matter of days, by a week it's about perfect. This phone does not do that, mine hasn't adapted at all and is still just as bad as day one.
Any comment on that @Funk Wizard ?

download and setup Velis Auto Brightness from the play store, and you can get the same adaptive brightness..learns and after a few days the difference is great..

krabman said:
Guys Goog has just now announced they've added their learning adaptive brightness feature into Pie, and it's up to OEMs to use it at their discretion, Samsung for instance has their own learning adaptive brightness already in use. In any event this phone does not appear to have it. I had a Pixel XL 3 and the brightness there really is learning, you can it adjusting immediately and see a solid difference in a matter of days, by a week it's about perfect. This phone does not do that, mine hasn't adapted at all and is still just as bad as day one.
Any comment on that @Funk Wizard ?
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Still broken and its been like that for some time. Hopefully in the coming builds it should be taken up as priority :good:

So far it's not that good for me but I have to give some more days to train itself to my usage behaviour. Will see.