Database Develop

[SOLVED - Help] Broken ALS on JellyBean?

Hello. I updated my T to JellyBean two days ago. I turned auto-brightness off because I thought Sony changed something and it's was working differently - the screen was always as black as possible just like there was no light around me. I just checked Service Menu and Ambient Light Sensor data. Result? Constant "0" value wherever I am - in dark room or outside at direct sun. Do you have the same problem too? Maybe JellyBean breaks ALS for now?
Tapatalked from Poland using Xperia T

romcio47 said:
Hello. I updated my T to JellyBean two days ago. I turned auto-brightness off because I thought Sony changed something and it's was working differently - the screen was always as black as possible just like there was no light around me. I just checked Service Menu and Ambient Light Sensor data. Result? Constant "0" value wherever I am - in dark room or outside at direct sun. Do you have the same problem too? Maybe JellyBean breaks ALS for now?
Tapatalked from Poland using Xperia T
Click to expand...
Click to collapse
Mine says 0 as well, but i have no problem with the display, auto brightness works.
Are you saying auto brightness is broken on your phone?

Odp: [Help] Broken ALS on JellyBean?
Ummm yes. My bad I should have described it better. Yes I think it's broken, because ALS always shows "0" so the screen dims to the minimal value and it's totally ureadable outside with auto brightness turned on. When it's turned off it's ok, no problems at all.
I had no problems on ICS, auto brightness was always turned on and screen brightness was always set to the value where on the brightness widget that sun icon is "off" so it could adjust itself. And I had no problems in dark rooms where the screen was "correctly" dark and outside where it was very bright. Without manual messing with the brightness.
Tapatalked from Poland using Xperia T

ok,
does yur screen change brightnes when you turn auto brightness off in settings?

Odp: [Help] Broken ALS on JellyBean?
I have it turned off now I couldn't use the phone because screen was too dark.
But yes, the brightness changes:
Turning AB on = brightness does not change at all. After turning screen off and on brightness drops to the minimum like I was in a dark room.
Turning AB off = brightness gets back to normal just like it's set.
Tapatalked from Poland using Xperia T

Same for me, auto brightness act strange on my device too. When I thick "adjust brightness" sometimes nothing happends, not every time but it's not normal...

I'm just wondering, on ICS/JB, under brightness, mine had 'Adapt to lighting conditions' but I was still able to adjust the brightness :/
Does yours say auto brightness or adapt to lighting conditions?

SWFlyerUK said:
I'm just wondering, on ICS/JB, under brightness, mine had 'Adapt to lighting conditions' but I was still able to adjust the brightness :/
Does yours say auto brightness or adapt to lighting conditions?
Click to expand...
Click to collapse
Adapt to lighting condition/auto-brightness... In Polish it's "Dostosuj do oświetlenia" so in English it's "Adapt to lighting conditions" but commonly it's just called auto-brightness. I think it does not matter, we all know what's going on
Simply said - the tick option above the bar which you can adjust...
Constant "0" value read by ALS makes my phones screen always dark with auto-brightness on. Period On ICS there were no problems because ALS was working correctly.
EDIT:
I'll try to record a video and post it on youtube to show you my problem.

AW: [Help] Broken ALS on JellyBean?
Same here...auto brightnes act strange on my device with JB.
Gesendet von meinem XPERIA T mit Tapatalk

Thread can be closed - problem solved. I did a total wipe (formatting every partition except the ones connected with sdcards) in CWM and reflashed the FW. Then, after booting the device I did not check the option with restoring my saved data (Wi-Fi passwords, Settings settings etc.). The problem is gone but still auto brightness works so different when compared to the ICS one.

romcio47 said:
Thread can be closed - problem solved. I did a total wipe (formatting every partition except the ones connected with sdcards) in CWM and reflashed the FW. Then, after booting the device I did not check the option with restoring my saved data (Wi-Fi passwords, Settings settings etc.). The problem is gone but still auto brightness works so different when compared to the ICS one.
Click to expand...
Click to collapse
My phone does show ALS value of 0 as well.. but auto brightness seems to work..

ALS value = 0 for me too!
Brightness increases but not decreases until the screen goes off...
I got back to ICS and ALS works fine!

stedrum said:
ALS value = 0 for me too!
Brightness increases but not decreases until the screen goes off...
I got back to ICS and ALS works fine!
Click to expand...
Click to collapse
Yeah you are right. I can revive the thread somehow for any other people here. Also for me because auto brighness does not work again
But I don't care. I use manual brightness for a very long time and I got used to it. No annoying screen flickering and any other stuff

Autobrightness works, but a little different way than on ICS. ALS looks like it's off, but als_results file gives different results in different light conditions and the screen brightness really changes.
But sometimes the sensor stops working for some reason and you have to reboot to repair it. This happened to me between 2 or 3 reboots after fresh install of rom and now it's fine. (maybe a problem with illumination service).
But don't forget that the screen brightness is affected by thermal throttling and values from factory are very low. I think about 50% brightness at about 45°C xo_therm temperature.

I prefer ICS way...

it also happens in Xperia V JB ..

automatic brightness behaviour

Hi!
The automatic brightness on my Xperia Z behaves weird (altough I think it is a bug)
This is what happens:
I have the phone set to "adapt to light conditions" (automatic brightness)
Now when I slide the brightness slider, the brightness changes. But, depending on the setting of the slider, it will not go to full brightness or darkest on its own. When I turn off "adapt to light conditions", it becomes brighter or darker, depending on slider position. But it will never go to 100% on it's own, not even directly under a lamp. It also becomes a little brighter when I turn off automatic brightness and have the slider set to 100%.
Expected behaviour:
I turn on automatic brightness, and put the slider in a, let's say, 60% position. The phone goes to 2% brightness in a pitch dark room (when I read in bed) and switches to 100% when I'm outside in the bright sun. When it does not sense extreme conditions (e.g. sensor reading <20% ambient brightness or >80% respectively; then gradiently going to darkest or brightest gradiently, of course), it aims for the +-60% brightness I specified with the slider.
Conclusion: The slider is an overall threshold for screen brightness and it does not adjust in a 2-100% brightness range, but around maybe +-30% or so around the position the slider is set at. This sucks!
This seems to clearly be a bug, and imho this contributed to the somewhat "not so impressed with the screen" reviews I read before I bought it. Because the screen is really very good if it is set to the correct brightness.
Thanks for the answers!
PS: When I enter the service menu with *#*#7378423#*#* and check the ambient light sensor, it gives me values between 0 and 1000 - so it does definitely work correctly. Build number is 10.1.A.1.350 - I know there is a newer one, but my phone is carrier branded (3 Austria, for that matter) and hasn't been updated yet, unfortunately. Can someone confirm that is is fixed in .434?
x-post from talk.sonymobile.com

I dont think this is a bug. It's been like that on the t, tx, v since they were launched.

LitoNi said:
I dont think this is a bug. It's been like that on the t, tx, v since they were launched.
Click to expand...
Click to collapse
Really? This is almost a deal breaker for me :/ that is a really stupid behaviour, what do I need automatic brightness for if I have to change it myself anyway? I really don't want to care about this miniscule thing on a 600€ device - I expect it to adapt to all conditions.
I didn't want to root it or put a custom rom on it - Sony did a good job with the software as it is, except the automatic brightness.

Sony phone has the best auto brightness
You can find on any phone.
You can say Samsung's auto brightness sucks but not Sony
In auto mode you have the choice to set the minimum brightness level you want and the level will go up depends on the lighting situation and sensor reading.
Yes it has some threshold limitations but it's very sufficient.
Sent from my C6602 using xda premium

gm007 said:
Sony phone has the best auto brightness
You can find on any phone.
You can say Samsung's auto brightness sucks but not Sony
In auto mode you have the choice to set the minimum brightness level you want and the level will go up depends on the lighting situation and sensor reading.
Yes it has some threshold limitations but it's very sufficient.
Sent from my C6602 using xda premium
Click to expand...
Click to collapse
Sorry, but "best auto brightness" is not what would've come to my mind thinking about the xz and I would never buy a Samsung plastic brick
I had a Nokia N9 previously (that I miss dearly, but the internal 3G antenna was broken so I had to replace it... still by far the best phone I ever owned) and it had exactly the auto brightness behaviour I expected - when I read in the dark, it when down to the lowest possible setting. And when I was in bright sunlight, it went to full brightness wihtout a delay or hassle. I could read it perfectly under any condition and never thought about the settings. The slider only indicated a preferred standard brightness - always had it at 60% and it was perfect.
I really don't understand why other manufacturers wouldn't do it exactly the same way? As I said before, why even have an auto brightness setting if I have to go to settings to adjust it anyway?!?! If I put the slider on 60% and auto brightness on, it burns my eyes in the dark and I can't read it in bright sunlight - I even have to adjust it when the sun shines through my windows at work?!?! WTF Sony?

We are talking android here
I don't know if you had the chance to use gingerbread,froyo....
Maybe android has some limitations.
Sent from my C6602 using xda premium

gm007 said:
We are talking android here
I don't know if you had the chance to use gingerbread,froyo....
Maybe android has some limitations.
Sent from my C6602 using xda premium
Click to expand...
Click to collapse
iirc it didn't annoy me (and boy am I picky about details like that! ) on the HTC Magic (up to the last CM that supported it) and the Nexus S I had before the N9... anyway, seems I have to get a decent brightness toggle widget :/ (maybe you can point one out?)
but thanks for your replies!

just for the record and anyone who may find this thread in the future:
I just installed "Auto Brightness" and it seems to work well and has tons of settings. Would have preferred a more native solution... I hope this doesn't drain the battery.
dr. g

MeMo Pad ME572c fluctuating brightness

Just picked up an ME572c and I'm very impressed for the price. However I have noticed the screen brightness levels keep fluctuating as if the light sensor is constantly detecting different light levels.
Has anyone else experienced this?

madgibbon said:
Just picked up an ME572c and I'm very impressed for the price. However I have noticed the screen brightness levels keep fluctuating as if the light sensor is constantly detecting different light levels.
Has anyone else experienced this?
Click to expand...
Click to collapse
Hi,
i notice this too, but that can be related to the power saving mode. Plz turn it off and check the settings in detail. Maybe that helps.
Further inside the developer options there is another option to configure the auto brightness.
You can change the behaviour from dynamic to immediately or slow mode and active an onscreen lux, gain and brightness value display.
Btw i am not satisfied with the auto control, as for my taste the brightness is still too low in a less lighted room. Sensor is reporting 0 lux already with a brightness of 14 which would be ok for a really dark room & night but not at daytime.
What is your experience?

I tried playing with power saving mode and the auto brightness controls in developer options. While I could reduce the fluctuations, I could eliminate them completely. Unfortunately I found it too distracting and returned the device earlier today. It's a shame as everything else was quite impressive for the money.

I also found the fluctuations annoying, my solution was to turn the auto-brightness off. Honestly I dislike auto-brightness on any device, it was also one of the first things I turned off on my laptop.

I am using Lux app now and raised minimum brightness at 0 lux. Thats ok for me now.

tycoo said:
Hi,
i notice this too, but that can be related to the power saving mode. Plz turn it off and check the settings in detail. Maybe that helps.
Further inside the developer options there is another option to configure the auto brightness.
You can change the behaviour from dynamic to immediately or slow mode and active an onscreen lux, gain and brightness value display.
Btw i am not satisfied with the auto control, as for my taste the brightness is still too low in a less lighted room. Sensor is reporting 0 lux already with a brightness of 14 which would be ok for a really dark room & night but not at daytime.
What is your experience?
Click to expand...
Click to collapse
Just bumping this to confirm this works and so that others can see. I used Developer options as well (before I found this post) and noticed the instant setting works best.

One more setting to also double check... Make sure that in developer options under auto brightness that you disable allow change gain...
Even with everything disabled it appears as if something still is changing the display. I particularly see it with something like a reddit browser when I'm viewing pictures. You click the pic, it loads and displays and then 1-2 seconds later the display adjusts based upon what is being displayed. Depending upon the picture it can be pretty annoying. I may have to root and start poking around to find out what is causing this.

with the lollipop update this issue is fixed for me.

Is lollipop really solve the problem?
muiriddin said:
with the lollipop update this issue is fixed for me.
Click to expand...
Click to collapse
Hello!
Im on lollipop, but the problem you had, still occur at me.
Did you noticed this problem, since you on lollipop?
I have the same problem. When i read, or browsing, the brightness changes in 2-3 steps.

Brightness Management: What's the best way?

I don't know if anyone else feels this way, but I tend to think that the auto brightness setting on stock lollipop is WAY too bright, and, while of course it shows off the screen, it wastes battery life.
I can turn on power saving mode to try and dim the screen to some extent. I've also given Lux a try, but it didn't really seem to do much...
Does anyone have an idea for auto brightness which works similarly to how CM12.1 does it on this phone? Where you can set how bright you want it to be, but it still compensates for ambient light?
Thanks!

duraaraa said:
I don't know if anyone else feels this way, but I tend to think that the auto brightness setting on stock lollipop is WAY too bright, and, while of course it shows off the screen, it wastes battery life.
I can turn on power saving mode to try and dim the screen to some extent. I've also given Lux a try, but it didn't really seem to do much...
Does anyone have an idea for auto brightness which works similarly to how CM12.1 does it on this phone? Where you can set how bright you want it to be, but it still compensates for ambient light?
Thanks!
Click to expand...
Click to collapse
I like screen filter. It's very simple and you can pick which percentage you want. I've gotten it lower than stock. I'd recommend giving it a try. Couldn't hurt.
Not sure about the ambient light bit, last time I used it was on my note 2. It may be available.

There's a setting for ambient light too.

[PIE] Adaptive brightness issue?

Good evening,
just wondering if anyone else has issues with adaptive brightness after the latest PIE update? Since the update it changes the screen brightness during low light conditions from semi-low to low without any reason. And in normal light conditions it sometimes gets way too bright. And it doesn't modify the screen brightness in small steps but in one "big" step.
Btw: I did not wipe my phone before upgrading, maybe that's part of the issue.

yeah same issue here. phone seems to wake up in very low brightness mode randomly?

same here.

maaakn said:
same here.
Click to expand...
Click to collapse
You will have to go back to the display brightness and adjust to the level you like, then subsequent light condition will then be adapted to your new value.
Hope this helps.

Same here. And I did full reset, after Pie upgrade

It needs some time to finish learning, Adjustable brightness Android 9 feature is now AI controlled. Google it.