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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Click to collapse
+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

[Q] Galaxy S4 I9500 Screen flickering problem

Hi, started this thread to see if anyone had the same problem I'm having with my screen.
I have a Galaxy S4 GT-I9500 (Octa-core variation), it is running 4.4.2, rooted, stock Touchwiz.
The problem is that the screen starts to flicker almost as if it would want to turn off, when in low light conditions and auto-brightness on, it continues to flicker unless I set the brightness between +2 and +5. I can reproduce the issue without auto-brightness setting the brightness to the lowest, one notch above the lowest and there is no flickering. It is noticeable in white backgrounds and also when swiping down the notification center, that's the most noticeable instance but you can see it in the home screen and in any app.
I started noticing it when I had 4.2.2 Jelly bean (rooted), and I updated to Kitkat hoping it would be solved but it is the same, I updated through Kies and rooted, no Factory reset, I want to try that as last resort.
Funny thing I discovered is when I set Juice Defender to control my brightness it does not flicker even in -60% brightness, but when the dimming happens before the screen turns off it does flicker (and the dimming thing is controlled by the OS I think, not Juice Defender).
I wish I could put up a video but I don't have another phone to film it.
Anyone know if this is software or hardware? What can I do?
I'd like to add, that I changed the battery, disabled overlays in developers option, forced GPU rendering, tried Pimp my rom and played with all the settings, checked and unchecked every option in Display settings and it still flickered given the low brightness conditions.

I think I've found the best solution out there for most annoying screen flickering issues... Done a substential amount of digging and finally discovered the app "Twillight" works like a charm by enabling backlight control feature... Try it out first, then thank me and share your experience here ...

Screen flicker workaround

Hi everyone
I want to share a workaround to all of us who owns a defective S5
Symptom: You unlock your phone and it doesn't show anything. Actually, the phone is working. Capacitive buttons light up and you may heard some activity in the phone
Your phone has a defective screen. There are a lot S5 which have this problem, according to several forums. After several tries, unlock and lock over and over, the screen light up and you are able to use your phone. The problem is when you receive a call and you want to know who is calling you, the screen doesn't illuminate and you won’t be able to know who is.
Here's a workaround which makes your powerful S5 usable and take out from your drawer.
Solution:
The more effective way to fix it is: change defective screen! But sometimes it could cost as much as a new phone, or simply you can't afford it, and it's better to change your phone instead, and you put your S5 in a drawer.
The technical explanation of this problem is: Screen doesn't receive enough electrical current at low brightness levels (maybe the flex is defective, get old, etc)
Most probably the wake up problem exist together with screen flicker at low brightness levels
The wake up problem rises up more in dark environment, when light sensor make low bright screen
The lock screen light up screen, with a dim effect: when you lock the phone, it slowly turn screen off, and when you unlock, it make and effect of dim screen.
When you are is in dark environment, the effect is very slow, preventing the screen illuminate because the technical problem explained before.
When you are in very light environment, you lock screen and sensor light make the screen very brilliant and chances are you defective phone wakes up correctly.
We can use an app which give us complete control over brightness subsystem. I use an app called Velis AutoBrightness:
Once installed from Play Store, it shows a Setting Wizard. Follow the instructions. Below are some notes
• 1/7: Welcome Screen
• 2/7: How bright... Most probably is your phone always have flicker in low brightness. Choose "AMOLED" or "AMOLED bright". By the way choosing any one of those cure always minimum brightness failure!
• 3/7: Choose High sensitivity
• 4/7: On, if you want additional brightness when charging. Irrelevant for this thead. Choose your favorite setting
• 5/7: Same of 4/7
• 6/7: Choose enable: That enable the app
• 7/7: Some additional notes: Press Done
Now important settings: go to Menu > Settings > General: Settings Mode > Advanced
Service Activation settings:
• Disable system handler > ON: When you use Power saving mode, you surely noted screen flicker, which is very annoying, and make unusable power saving mode. By set this ON: Android doesn't set screen too dim; instead Velis have a minimum of brightness set by Wizard 2/7. (Surely you find out that you avoid screen flicker, by setting autobrightness off and slider in 8-10%)
Sensors settings:
• Screen-on sensor value override: Set this value to 30000. Read below this post if you want technical explanation of this setting
After you establish these settings, you'll be able to unlock your phone all the time!
This is the trick: When you unlock your phone, you'll note that the screen is very bright (because Screen-on to 30000) and quickly adjust to the environment light. The failure is that electrical current to screen is defective, and when exterior light is dark, the screen make a dim effect and doesn't light up.
Note to Marshmallow users:
• This app make use of Screen overlay permisions: And marshmallow is very restrict with this kind of app. This is specially true when you are installing an app. All you have to do is deactivate the app in notification screen: press "OFF" button, adjust system brightness upper enough to not flicker the screen, install your app, and activate Velis Autobrightness again
• Because of Doze mode, wake up from this mode may avoid your screen light up, the first time you use your phone. Let 10-15 seconds your phone wake up, lock again, and unlock again, and velis will make its work!
I hope this post make your smartphone usable. I barely apply this trick to two phones, but I think this is a good workaround!

I used this app & the flickering is still available

What worked for me is downgrading the firmware on my g900f all the way back to Android 4.0. My phone came with version 5.0 and I noticed the problem only after I kept installing samsung's system updates. Will report if the problem starts up again but I'm running rooted and running nougat just fine so I don't see a reason to keep upgrading the firmware.
Edit: nevermind, this didn't work

Reyse said:
The technical explanation of this problem is: Screen doesn't receive enough electrical current at low brightness levels (maybe the flex is defective, get old, etc)
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Click to collapse
Does anyone know for sure if it's the flex cable or some capacitors? I notice only the lower half of my screen flickers.. I bet there's a simple electrical fix for it instead of replacing the whoooole display

fbs said:
Does anyone know for sure if it's the flex cable or some capacitors? I notice only the lower half of my screen flickers.. I bet there's a simple electrical fix for it instead of replacing the whoooole display
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Click to collapse
Hello,
Have you change jour battery? If it s old it could cause some issues...
But try to buy a genuine one, I think that your battery must be old now.
Bye

cedouic said:
Hello,
Have you change jour battery? If it s old it could cause some issues...
But try to buy a genuine one, I think that your battery must be old now.
Bye
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Click to collapse
it doesn't make any sense. the lower half of the screen flickers in green even on charger

fbs said:
it doesn't make any sense. the lower half of the screen flickers in green even on charger
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Click to collapse
I noticed that screen only flickers at low brightness when using Boeffla kernel for LOS14 and others based on it.
No issue for the same device with LOS or Stock based kernels.

zlazaar said:
I noticed that screen only flickers at low brightness when using Boeffla kernel for LOS14 and others based on it.
No issue for the same device with LOS or Stock based kernels.
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Click to collapse
you're wrong
I was using los16 with stock kernel for months with flicker everyday

fbs said:
you're wrong
I was using los16 with stock kernel for months with flicker everyday
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Click to collapse
+1 to that , i even went back to stock and the screen flicker appeared and such issues are well known already with samsung amoled panels back in 2014-even some panels from 2018 . So def not kernel related.

I was using los 15.1 and this problem got worse. The phone was barely usable as mentioned by the op. In my case, the screen would start flickering below 60%. Then I switched back to stock marshmallow. I noticed that 100% brightness in los 15.1 is actually only about 70% in the stock rom.
I have been using the phone at 80% brightness for some weeks now and the problem has significantly reduced. But not completely gone, it's much much better. Also, you might want to avoid using dark wallpapers.

Is this normal or problem? Brightness.

Good afternoon,
I do not know if it is something normal or it is a real problem that requires technical support. The case is that I have the mobile without automatic brightness, and when I set the brightness to very low levels, when unlocking the terminal, when you turn on the lock screen with the wallpapers, it appears as a slight flicker of the screen, thousandths of a second, almost imperceptible if you do not stare. Something like when you start to light a light bulb until you get to have light at all, but with a very slight flicker.
It is not an extreme flicker that completely turns off the screen or any of that, it may even be the operation of the brightness sensors (which happens to be strange because the automatic brightness is off), but I worry that it may have more problems in the future. Also I have noticed that having the brightness to the maximum of half of this problem does not occur, only with low brightness. There is also no blinking once unlocked using the phone itself, everything works perfectly. It is as if the lock screen was automatically adjusted when unlocked.
Should I contact technical support or just foolishness of mine?
Regards and thank you very much in advance.
PD: I have EMUI 4.0, NXT L29 with b192

Maybe you can upload a video so we know what ur talking about.

I think I've actually noticed something like what you're describing in my device. In summary, ever so slight flicker of brightness when display is on low/lowest level with automatic level off. I assumed it was normal

gm007 said:
Maybe you can upload a video so we know what ur talking about.
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Click to collapse
I have tried to record videos, but it is very difficult to appreciate.

MuPp3t33r said:
I think I've actually noticed something like what you're describing in my device. In summary, ever so slight flicker of brightness when display is on low/lowest level with automatic level off. I assumed it was normal
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I also think it's normal. It's like an automatic contrast adjustment to accommodate the eye to the screen. I think it's a matter of the IPS NEO screen.

Does anyone else have this?

Screen Flikering Issue with auto brightness sensor on Zenfone Max Pro M1 6gb

Has anyone noticed Display keeps flickering when auto brightness is on. Even if phone is kept at a fixed position & same amount of light is exposed to the sensor it still keeps flickering. I mean if I'm watching movie it automatically dems or increases the brightness. please confirm how many user experiencing this problem! as per i know it was not resolved from 301 to till 331 update. is it manufacturing defect particularly with specific variant ?

I wouldn't call it it a flicker. More like the auto-brightness feature is so badly programmed that it doesn't transition from dim to bright and vice versa in a smooth, gradual or dynamic manner, like in older and cheaper phones.
My eyes get a shock every few seconds, trying to adjust to the sudden jumps in screen brightness. It's a real pain.
And yes, the issue has persisted through all the OTA updates without any sign of improvement.
Instead of addressing this most basic and "glaring" issue, Asus seems to be intent on introducing bloatware and EIS for the phone and announce it like it's the second coming.
The latest update was supposed to bring with it, system optimization but I don't see any form of basic optimization, let alone calibration, with the screwy display.
I can only guess at Asus' sense of priorities. Or if they're actually blind and/or stupid.

May be it was true that autobrightness was programmed badly manner it was not transist smoothly from dim to bright. But afterall we are facing it at serious level and uptill now asus has not solved yet. I just want to confirm that How many user experiencing screen flicker issue after enabling auto brightness or it was particularly manufacturing defect with specific varient.

its an autobrightness calibration issue,software update will fix it in future,lets hope so

Hello everybody! I found a bug: brightness is flickering even when "auto brightness" ("adaptive brightness") is disabled. Brightness can encrease for few seconds and then decrease to previous level. I read in some reviews that max pro m1 has adaptive brightness which changes depending on content on the screen. I tried to change a lot of display settings, developer settings, i tried to adjust CABC (Content Adaptive Brightness Control) through Nova Launcher (but later I read that CABC controls only autobrightness), and even hard reset. I flashed custom ROMs but it didn't help. Only Lux Dash app helps avoid this bug. But it is not very comfort to use it and I think there must be desicion on firmware level. Did anybody has this problem and any solution? May be somebody has this issue and found custom ROM without flickering brightness?
Sorry for my English, it's not my first language. And thank you for answers!