[Q] Auto Brightness (light sensor) settings file - Sony Xperia P, U, Sola, Go

Hi All,
Could you please point me on the file that has settings for auto brightness? I want to increase the range, the stock one is almost unnoticeable.
Thanks in advance!

Xperia S does not have auto brightness in both Gingerbread or ICS.

GT35pro said:
Xperia S does not have auto brightness in both Gingerbread or ICS.
Click to expand...
Click to collapse
What you are saying? Sure that Xperia S have auto brightness ! You probably are not able to set it :laugh:

It has auto brightness xD
Try to buy some glasses...
But without custom rom or app you cannot control it.
Cyanogen mod or app ( widgetsoid) can control it very easy.
Sent from my LT26i

It has auto brightness. You can go to the Service menu, Sensors section and there you will find Light sensor, there you will see its current values, as far as I remember they are 0..12 or so, but that doesn't really matter, I want to find where the dependency between Light sensor value and brightness is coded.

You should ask some rom dveloper for some info :-/
Sent from my LT26i

It has auto brightness, but only the smarts can see

I found this useful post.
In ICS we have it in /system/etc/als_curve and there we have 4 folders: 0, 1, 2 and 3 with limits and parameters. I assume these are 4 zones of brightness (0-25% on folder 3, 25-50% in 2, 50-75% in 1 and 75-100% in 0).
We have to change the parameters, as in the post I referred, but personally I didnt understand almost anything, so we need to try... If someone will be trying too, let me know your results!

I have found an easy way to set auto brightness and it works beautifully:
Download and install quick settings.
When you are in quick settings, tap "customize", tap the small tool icon next to brightness, and you will be asked whether to enable light sensor.
Once enabled, you will be able to use auto brightness through quick settings app.
Sent from my LT26i using xda app-developers app

Why couldn't they just add the option into the settings like everyone else??? Is it really that hard?
Sent from my LT26i using xda premium

That is their style.
Go and send them mail to change it.
Sent from my LT26i

zeefung said:
I have found an easy way to set auto brightness and it works beautifully:
Download and install quick settings.
When you are in quick settings, tap "customize", tap the small tool icon next to brightness, and you will be asked whether to enable light sensor.
Once enabled, you will be able to use auto brightness through quick settings app.
Sent from my LT26i using xda app-developers app
Click to expand...
Click to collapse
It is enabled by default even without 3rd-party apps. The reason of all this is to make its range bigger, more noticeable.

Hayden18 said:
Why couldn't they just add the option into the settings like everyone else??? Is it really that hard?
Sent from my LT26i using xda premium
Click to expand...
Click to collapse
I also really don't understand why Sony cannot put this option just in the brightness settings.... I have had a long time thought that the SXS doesn't have auto brightness at all but dunno that its in fact hidden somewhere which can be called out easily by a 3rd party app !
Sent from my LT26i using xda app-developers app

It does have auto brightness, it just works a little different from what we're used to so far. You can find the brightness control in Settings->Display->Brightness (at least that's where you find it in Gingerbread). Now, the thing that creates so much confusion, is that this control shouldn't be called Brightness, but Visibility. What the phone does (and imo this is really clever), is that you move the slider to adjust the visibility of the screen best suited for your eyes and then the phone will automatically adjust the amount of light the LEDs glow using an intrinsic curve so that the same visibility is provided outdoors and indoors. You can test this. Set the slider halfway and then go outside, in the sun, and cover and uncover the light sensor a few times. You will see that the screen is dimmed and brightened up while you do that as the phone tries to maintain it's visibility to the setpoint you chose by moving the slider. Simple and clever, huh? What some may argue, is that the brightness variation is not aggressive enough, and they may have a point. Personally, I don't need to move the slider more than 20%, as the screen is perfectly visible even on a sunny day (of course, that is unless the sun directly reflects in the screen, but I found this happens only if you hold your phone on purpose and it is not a comfortable position).

Hello,
In my lt26w there is no Visibility submenu. But it looks like the application "quick settings" has make a trick.
Best Regards,
Vlad

Related

[Q] can not adjust brightness ?

Hi
I didn't find a good answer to my question on the other threads for x10 mini (e10i)
I found this phone and got rid of the SIM-card. The brightness of the phone is too dark and i can't adjust it!! How does this come?
If the phone boots, the light is bright. But once the OS loads into the memory, the brightness gets dark and i can't get it lighter ( it is already at the maximum brightness if i look into the settings)
What can I do?
Thanks
Stijn
You can place you question in right forum!
Sent from my GT-I9000B using XDA App
Turn off auto brightness from settings /display and set the amount of brightness you like manually. You can also tweek sensor sensitivity from cyanogen mod settings /display if u want to keep auto brightness
Sent from my X10mini using XDA App

How to enable auto brightness on Xperia Ray?

I found that Xperia Ray have Ambient light sensor from the white paper, but i can't use it on stock roms or CM7, can someone enable this?
this is the link of white paper
http://dl-www.sonyericsson.com/cws/download/1/997/193/1308295710/ray_WP_1.pdf
thanks!
Good question!
I also found in the whitepapers that the Xperia mini pro (sk71i) has the same ambient light sensor but when I check with android tools like "Sensor List" the only thing that could match is the Proximity sensor. That one goes from 1 to 0 if you get close to the top (blocking the light?).
APDS9702 Proximity
The sensor is enabled by default
how? i can't feel that
With my HTC Desire Z I had the "auto brightness" option. On this one I don't. Are you sure it is enabled? Do you have any clue what sensor it would be in the list of for example android app "sensors list".
xutienan9520 said:
how? i can't feel that
Click to expand...
Click to collapse
As of Stock Rom 2.3.3 and 2.3.4 there is no 'auto brightness' option.
But the ambient light sensor is always working.
If you take it outside in bright sunlight, you will notice that the screen automatically gets brighter. That's how you can tell the sensor is always on
I assume they haven't put auto brightness in as a feature because maybe some people want to save battery/adjust their screen brightness for indoor use.
But when the surrounding light passes some threshold (ie, outside), the auto brightness feature overrides your user settings...
thanks.....so, can i make a option for this?
xutienan9520 said:
thanks.....so, can i make a option for this?
Click to expand...
Click to collapse
No, there's no select-able option for it. It's always on.
check "brightness level" widget in android market. I just added to my desktop and it has an autolevel option. Seems to work. But I can't say if it's really off when you select only a percentage.
LOL! Check some of the newer topics. Many users want to disable the auto brightness. The topics have some info for rooted users. But as said it seems to be enabled by default.
It's not linked to the 2.3.3 update though. My desire Z also had that Android version and still provided the auto brightness option in the display menu.
It also seems to be the reason of the flickering screen on low backlight setting. That is in fact annoying.
So, how can i disable the sensor? I want my screen always to be bright, i hate this auto adjusting
FreeZr said:
So, how can i disable the sensor? I want my screen always to be bright, i hate this auto adjusting
Click to expand...
Click to collapse
See this [HOWTO] disable ambient light sensor for LCD in xperia mini. It might work on Ray too.
scroolik said:
See this [HOWTO] disable ambient light sensor for LCD in xperia mini. It might work on Ray too.
Click to expand...
Click to collapse
Thanks. I wanna keep my warranty though
If there is a light sensor on my ray then it must be disabled.
Mine does not react to any changes in light at all - even if I manually cover the whole of the top of my phone in my fist.
I also find that the screen is odd outside in the sun. It looks exactly the same if it's set to 25% brightness or 100% brightness (both are just as easy to see). I can only notice a difference in brightness when i'm indoors or if it's dull and cloudy.
FYI i'm on 4.0.A.2.368 - 2.3.3
chancooluk said:
If there is a light sensor on my ray then it must be disabled.
Mine does not react to any changes in light at all - even if I manually cover the whole of the top of my phone in my fist.
I also find that the screen is odd outside in the sun. It looks exactly the same if it's set to 25% brightness or 100% brightness (both are just as easy to see). I can only notice a difference in brightness when i'm indoors or if it's dull and cloudy.
FYI i'm on 4.0.A.2.368 - 2.3.3
Click to expand...
Click to collapse
That's not good!
Sent from my ST15i using XDA App
Screen Auto Brightness is not working on my Xperia Ray too.. I don't know why this feature was disabled... I tested light sensor and that works but brightness never changes... Is it because of old 2.3.3 firmware i have ? I didn't update to latest yet..
I don't know if it's just me but sometimes my screen kind of flickering.
Is it true that it's because of the light sensor just too sensitive?
Sent from my ST15i using XDA App
zigma80 said:
I don't know if it's just me but sometimes my screen kind of flickering.
Is it true that it's because of the light sensor just too sensitive?
Sent from my ST15i using XDA App
Click to expand...
Click to collapse
Yeps. I have the same -.-
chancooluk said:
If there is a light sensor on my ray then it must be disabled.
Click to expand...
Click to collapse
For me,Xperia Ray owner are very lucky.
Because the light sensor is implemented very bad on Xperia Mini for example.
The screen flickering and your eyes cry. : (
zigma80 said:
I don't know if it's just me but sometimes my screen kind of flickering.
Is it true that it's because of the light sensor just too sensitive?
Sent from my ST15i using XDA App
Click to expand...
Click to collapse
Yes,is a very boring problem.
The Xperia Mini has two big problem.
-Touchscreen lag
-Flickering screen
Check out this post on the Xperia Arc - works great just the same for the Xperia Ray. Also the linked program well depicts the relation ambient light value, brightness setting and the resulting screen brightness.

Do you use Auto brightness or no?

Hey,
Do you use Auto brightness or no?
If not, why?
I use auto as it doesn't affect my battery much needed screen look nicer when it's brighter. But there r pple tat use lowest brightness settings for battery savings reason
Sent from my GT-I9100 using Tapatalk
Yes, yes I do.
Sent from my GT-I9100 using XDA App
I don't. It drain's my battery more than manual settings. Slide your finger over notification area to adjust brightness manually.
I'm on MIUI so I can change from the notification bar. It depends, if I'm charging I'll have full brightness to show off the sexy SAmoled+ display. But if I'm out and trying to conserve battery I'll have it on auto.
Sent from my GT-I9100 using XDA App
Off.
Use quick settings via notification, hate brightness changing all time so its all way down except when need to up brightness manually.
Sent from my GT-I9100 using Tapatalk
Off. Main reason is to conserve battery. Most of the time super amoled plus display is bright enough even when close to lowest brightness. Like the others said there's a shortcut to manually increase the brightness through sliding the notification bar when needed say for example outdoors.
i never use the auto feature
Always auto.
I just can't unblock my handset when I'm out (thanks to australian sun) - I see nothing on the screen.
Unless there's a way to manually update brightness when lock screen's on ?
Off and almost always at maximum brightness. When using it in the dark (when I should be sleeping) I lower the brightness via the notification bar shortcut (that also works when the screen is locked using WidgetLocker).
No. Manual adjust is easy and more satisfying.
no!not working good....
inviato da sgs2
I do. Tried both and found that it's just as annoying having to adjust manually as it is when auto is slow
Sent from my GT-I9100 using xda premium
Never..... it ( almost) allways in max. It's a shame to use that beautiful screen on dull settings.
Sent from my Transformer TF101 using xda premium
Im using auto.....because home is not like outdoor.....if i make it at the lowest i wont see any thing in the outdoor.......i have it on because it stimulate the sun and the low light condition.....plus .. i dont care about the battery...i bought the phone to use it and enjoy it not to sit and watch the battery all day long and keeping myself from enjoying this coool phone...........
I use Auto; I might try manual and adjusting it now and then but at the moment I'm content with auto.
I kept it off cause you can easily changed the brightness just by sliding the notification bar
No , I use manual so I can adjust it to the way I like it.
Always off, adjust the brightness level where you suit.
Auto mode may drains battery life.
I do use auto bright
It's good to enhance your view on the mobile at any light conditions
And IT DOES NOT drain your battery . it's,false thoughts guys belive me
Sent from my GT-I9100 using XDA App

light sensor

hi all, I noticed that light sensor doesnt work properly, when I go from dark to light area, the brightness increases but when I go from light to dark area the brightness wont decrease, on honeycomb it worked properly, anybody else experiences this problem?
Same here, it goes bright but does not decrease.
I use the app https://play.google.com/store/apps/details?id=rubberbigpepper.DisplayBrightness&feature=search_result#?t=W251bGwsMSwxLDEsInJ1YmJlcmJpZ3BlcHBlci5EaXNwbGF5QnJpZ2h0bmVzcyJd
make an invisible slider on the edge of screen to adjust brightness.
is there any way to make it work properly?
Don't think so. Its pretty much unusable now.
Sent from my HUAWEI MediaPad using Tapatalk 2
There are lots of negative comments about light sensor, but i have to say it works well to me on ICS. Could be possibly massive amount of defected devices.
Lightsensor doesn't work for me either - too bad, hope it will be corrected.
Perhaps it's because I'm running ICS "General Channel".
HUAWEI MediaPad FIRMWARE(S7-301u,android4.0,C232B002,General Channel)
Do the sensor dim the light in the same session for you?
Here it turns up the light but not down again.
Sent from my U8800 using Tapatalk 2
Same here, adjusting upwards works fine, but it doesn't adjust downwards in low light conditions.
I have tried two apps that turns the light down again, custom auto brightness and lux auto brightness.
One small problem. The pad will crash on pattern unlock after sleep. I Also the light sensor will not work s after wake up sometimes.
Sent from my HUAWEI MediaPad using Tapatalk 2
mangoman said:
I have tried two apps that turns the light down again, custom auto brightness and lux auto brightness.
One small problem. The pad will crash on pattern unlock after sleep. I Also the light sensor will not work s after wake up sometimes.
Sent from my HUAWEI MediaPad using Tapatalk 2
Click to expand...
Click to collapse
I'm guessing no one has had any luck with this issue but I figure I'd necro the thread anyways. My light sensor sucks also. I used 'Android Sensor Box' to get the values coming out of the sensor. It only displays either 40 lux or 280 lux which is obviously not right. This is on Cyanogen 9, stock t-mobile ICS and the rooted international gingerbread(can't remember which one exactly).
So I was wondering if anyone who owns one of these has ever gotten a sensor value that makes any sense.
thanks
nope,
I use instead display brightness https://play.google.com/store/apps/details?id=rubberbigpepper.DisplayBrightness&hl=no
create an invisible brightness slider on theedge of the screen.
Try using custom auto brightness with the auto brightness on (there's a setting in that app that disabled the system auto brightness at screen on. Turn it off).
The original kernel only recognized 3 light levels. If you use bart's kernel it will recognize 6 levels.
Yes, I think there's a software problem because both app (lux and cua) crash hard in HMP, but I don't think fixing it is a priority.
Sent from my HTC Glacier using Tapatalk 2
How to use custom auto brightness without crashing the tablet.
There are 2 options that should be followed, other settings can be adjusted to your liking.
1. In preferences, Check Use pulsed sensor mode. Basically this option will make the app read the sensor itself instead of listening the sensor value given from the system.
2. In advanced preferences, set the sensor update speed to either half sec or 1 sec. I tried normal, but the app won't read the sensor value, so probably the slow normal maximum setting only works if you get the sensor value from the system.
You can set disable system auto brightness. I recommend it before because the setting was a "hack" which was making the system read the brightness value thus the app can get that value. Right now it's recommended that you check the disable system auto brightness.

Auto Brightness is completely broken

I just do not understand the implementation of Auto Brightness in G2.
If I go out, it never increases the brighness even by one bit. I have to swipe it up.
Same when I go inside.
Whats the point of Having auto brightness if it does not work.
Try lux dash app my friend.
Much better
I typically will point the front camera towards the sun when I go outside to get it to adjust. Usually works pretty quickly, but sometimes it fails.
Sent from my LG-D800 using xda app-developers app
The solution is use lux autobrightness
+1 for Lux autobrightness
eggman89 said:
I just do not understand the implementation of Auto Brightness in G2.
If I go out, it never increases the brighness even by one bit. I have to swipe it up.
Same when I go inside.
Whats the point of Having auto brightness if it does not work.
Click to expand...
Click to collapse
The way the auto brightness works in LG is different from what we see on other devices. If you flashing a custom AOSP based rom you will see auto brightness working fine as we are accustomed.
Agree, stock doesn't work at all
Sent from my LG-LS980 using xda app-developers app
Thanks for the lux tip. It appears to be working well.
Sent from my VS980 4G using Tapatalk
It works actually..Just that it's somehow retarded..And so i have switch over to fixed brightness instead..
Another option, although not automatic, is to swipe down and use the brightness toggle. Each time you press the button it will scroll through from 50%, 90%, 0%, 50%, 90%, 0%, etc.
I usually use my phone at 50% but if I'm in direct sunlight or want to show off my G2 screen I will then hit the brightness button to make it 90%. No idea why it doesn't automatically default to 100%, though.
Sent from my VS980 4G using xda app-developers app
I can not say I have noticed autobrightness glitches (European D802, stock rom).
I think LG2's autobrightness system is great. You can use the slider in pulldown menu to adjust your base brightness preference and it is auto according to that.
Far better than other phones with "fixed auto", i.e. my previous OneX+, where the screen is too bright in low-light conditions.
Yes LUX works...but so does the stock auto brightness setting. So if you want to use the stock version here is what you need to remember. The slider is the BASE level...which means that if you set it to 50% then that is the LOWEST the screen brightness will go when in a dark room. You can set it lower but in my testing I feel that anything lower than 40% does not lower it any more than that... YMMV.
Then, after setting your low end base, the screen will automatically get brighter when you go out into the sun. Now whether it will ever go to 100% on its own or not I do not know. But I find that with my VZ variant set to 50% base, when I go out into the brightest sun the screen brightens up to the point where I can see it just fine. One other observation is that the stock version is a little slower at making the adjustment than LUX is, but only by a few seconds from start to finish.
jaseman said:
Yes LUX works...but so does the stock auto brightness setting. So if you want to use the stock version here is what you need to remember. The slider is the BASE level...which means that if you set it to 50% then that is the LOWEST the screen brightness will go when in a dark room. You can set it lower but in my testing I feel that anything lower than 40% does not lower it any more than that... YMMV.
Then, after setting your low end base, the screen will automatically get brighter when you go out into the sun. Now whether it will ever go to 100% on its own or not I do not know. But I find that with my VZ variant set to 50% base, when I go out into the brightest sun the screen brightens up to the point where I can see it just fine. One other observation is that the stock version is a little slower at making the adjustment than LUX is, but only by a few seconds from start to finish.
Click to expand...
Click to collapse
That might be, but the difference from full sunlight to complete darkness is almost nothing, no matter what base % you set it to. The auto brightness is just utterly completly useless. Giving Lux a try.
I found yet another brightness app works great.
Sent from my LG-D802 using Tapatalk
I leave mine on 40% with auto ticked and it works fine
Sent from my LG-D802 using Tapatalk
I personally leave mine at 50% constant but for those who want auto brightness try this app:
https://play.google.com/store/apps/details?id=com.vito.lux&hl=en
Review:
http://androidcommunity.com/lg-g2-s...onky-give-lux-auto-brightness-a-try-20130923/
Stock autobrightness works, but it's slow and sometimes it won't change screen brightness for reasons unknown.
Lux is much better. I'm not sure about free version, but with full version you can customize brightness curve and lower reaction times so it's really quick compared to stock autobrightness.
+1 for lux with autobrightness on wake
Sent from my VS980 4G using Tapatalk
Yeah, i agree:
The solution here is Lux app. It's AWESOME.
https://play.google.com/store/apps/details?id=com.vito.lux&hl=en

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