Database Users

[Q] Autobrightness hack

Has anyone seen a hack to change the default autobrightness for the fascinate? I am coming from the Droid X and this was an option offered by a user on this forum. I am asking this because I noticed that at the lower settings the screen is plenty bright enough to be usable and that the display alone consumes about 34% of my battery life. I am getting 8 hours on a full charge but more battery is always good. Any help or point inthe right direction would be awesome.

You dont need a hack to turn off auto brightness. Just go to sound and display settings and turn it off, then change brightness to whatever you want.
Sent from my SCH-I500 using XDA App

I turned off auto brightness on my fascinate and have the brightness set to max. I am a power user and my battery lasts about 10-12 hours easy... Then again I use a dark theme...

i don't think he's asking about turning off autobrightness, i think he's refering to the fact that if you have autobrightness set, the lowest it will go is about 33%. it could save battery life, and still have the advantage of automatically lightening when you need it if the autobrightness would go as low as 5-10%. if i'm understanding correctly. but no, i haven't seen a way to do that yet. sorry.

sonofskywalker3 said:
i don't think he's asking about turning off autobrightness, i think he's refering to the fact that if you have autobrightness set, the lowest it will go is about 33%. it could save battery life, and still have the advantage of automatically lightening when you need it if the autobrightness would go as low as 5-10%. if i'm understanding correctly. but no, i haven't seen a way to do that yet. sorry.
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Click to collapse
Oooh.. I dig ya. My bad.
Sent from my SCH-I500 using XDA App

Lowest brightness setting (lower than Settings limit)

If you are like me, who have no problem with lowest brightness setting on this awesome SUPER AMOLED, you might want to know what I found.
Note that after about 2 weeks of usage, I found lowest brightness setting is more than enough. Even outside! Granted, right now is winter time here, so it has not tested on super bright sunny day.
Ok, I found that the lowest brightness setting set by the default "Settings" app (Display option) is not true lowest.
I compared the "battery power" usage using "Power Tutor" app (http://powertutor.org/):
Display System Power Usage -> LCD
1. Lowest brightness setting set via default Settings Display option
versus
2. Set brightness to 1% using Widgetsoid (developer said 0% is not possible, error)
The 1% setting uses lower battery power!
The no. 1 give LCD power usage reading at 350 mW.
The no. 2 give LCD power usage reading below 350 mW.
So, there you go, you can save some more battery by setting it to 1%
Of course, you can use any other app to set to 1%.

Cyanogen also can attain brightness lower than the stock "lowest" setting. However, on AMOLED screens the colors become a bit distorted when the brightness is very low. I've had 3 nexus S's and all of them have a slightly red/purple tint at extremely low brightness levels.
If you really want to save power, use the renderFX filter on Cyanogen and set it to red, and reduce brightness as much as you see fit. If I'm not mistaken, red draws the least power for AMOLED screens.

dinan said:
If I'm not mistaken, red draws the least power for AMOLED screens.
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Click to collapse
Black draws ZERO power. I'm not sure what's next lowest draw, though. Could red being the lowest be why the Nexus Ones tended to have a reddish tint to them? Mine was so oversatured in red I couldn't stand to watch videos with people in them. They all looked like lobsters.

distortedloop said:
Black draws ZERO power. I'm not sure what's next lowest draw, though. Could red being the lowest be why the Nexus Ones tended to have a reddish tint to them? Mine was so oversatured in red I couldn't stand to watch videos with people in them. They all looked like lobsters.
Click to expand...
Click to collapse
I think the red tint was a feature of AMOLED screens whereas SAMOLED screens have a distinct blue tint. Before anyone flames me for this, go talk to someone who know anything about how modern TV displays are tuned; they are always set to be slightly blue-ish as the human eye registers this very light blue as a pure white and is often used to make displays look brighter than they actually are.

I can't the 1% setting with widgetsoid to work. It does reduce momentarily but then jumps back to the default minimum. Auto brightness is off btw.
Any tips?
Sent from my Nexus S using XDA App

I use the N1 Calibration app to make the color look better and lower the brightness.

Wow this app is awesome. Running it on CM7 nightly 15 and I was able to fix the slight green/blue tint that I had =)
unknown.soul said:
I use the N1 Calibration app to make the color look better and lower the brightness.
Click to expand...
Click to collapse

You can use Screen Filter too. It works amazing.
http://www.appbrain.com/app/screen-filter/com.haxor

The screen calibration hack doesn't work with stock, right?

NexusDro said:
The screen calibration hack doesn't work with stock, right?
Click to expand...
Click to collapse
Needs root, and you also have to download the appropriate one for your ROM.

zephiK said:
You can use Screen Filter too. It works amazing.
http://www.appbrain.com/app/screen-filter/com.haxor
Click to expand...
Click to collapse
+1 works really great

I keep my brightness on 0 so.....yeah

I got blue eyes and in the sun I cannot see a thing unless brightness is all the way up. Especially when blinded by the snow.
Sent from my Nexus S using XDA App

I did some tests and when you use screen filter, it doesn´t go below 350 (power tutor). Using widgetsoid worked just fine.

In cm7 rom screen filtering is in cyanogen settings/ display.

[Q] Auto Brightness Changes Extremely Frequently

I got my GT 10.1 this past Monday and I have noticed auto brightness changes quite frequently. I can't figure out why. I don't think I am blocking the sensor but I don't know where it is...
Has anyone else had this issue? It's making me dizzy so I just turned off the auto setting but it seems like it should work.

Yes, mine does the same. I assume the sensor is next to the front camera, which I'm not obstructing. But the brightness level will change rapidly. I had to disable the feature. Found it default to a level too dark most of the time anyway.

I agree with it being too dark. At least I know I'm not the only one with the issue.

Same issue with me. Turned it off. I read that auto brightness burns more battery than full brightness cause it's constantly asking the CPU to make a decision regarding brightness.
Sent from my Galaxy Tab 10.1 using Tapatalk.

Interesting. I always thought that one if the purposes of auto brightness was to conserve the battery.
Sent from my DROIDX using XDA App

I had this problem too. It would constantly change so i had to disable it.
Maybe samsung can put a fix out for it.

I imagine the algorithm included is very simple and uses very few cpu cycles, so I doubt it has an impact on battery life. Especially since it probably doesn't (shouldn't) run when the screen is off, so it shouldn't prevent the device from sleeping.
I agree the levels they have set are much too dim and make auto-brightness just about useless. I had the opposite problem with my Captivate, where the auto-brightness as too bright. Fortunately CM7 allows you to adjust the levels for auto-brightness. I hope we see something similar show up in a custom rom for the Galaxy Tab 10.1
Anyway, I keep mine set at 20% and that seems to work pretty well for me.

Where do you see the brightness percentage? I have a slider but don't see a percentage anywhere.

It's an approximation on my behalf.

I notice the same problem especially when holding the device vertically with my right hand on the front facing camera. I guess the ambient sensor is located somewhere where my hand is and thinks that I'm in dark room and automatically lowers the brightness. I also noticed that the brigthness change whenever I touch the screen so i guess its listening every time you touch the screen unlike the ipad where it refreshes evertytime it wakes up.
Sent from my GT-P7510 using XDA Premium App

mesasone said:
It's an approximation on my behalf.
Click to expand...
Click to collapse
Ok. I thought I was missing something somewhere...
Sent from my DROIDX using XDA App

Is very anoying, i was moving my head while the screen increase the brightness and move my head and decrease... over and over. So i switch to a custom brightness.

Screen Filter

Maybe a useful post for some. I found this the other night, mainly because I was bored So if you use the app Screen Filter (which, by the way, is awesome for night time viewing in bed while the wife is asleep, you wont have to hear her say stop playing on your phone, because the screen is so bright!), but if you turn up screen filter all the way up to 100% brightness AND turn up your regular Android display setting up to 100%, you are basically getting your display level at 200%! And let me tell you...It is BRIGHT! I know this may be a useless post to most, but I found it to be actually very helpful in viewing my screen in direct sunlight, when the normal display brightness just wasn't enough.

Been using this app for months.
Sent from shane6374's Epic via Tapatalk

I am having problems enabling and disabling it consistently, but when I do enable it at 100% with my Android brightness at 100% I don't see any further brightness.
Also what is the advantage of this over the regular manual brightness?

Milkman00 said:
I am having problems enabling and disabling it consistently, but when I do enable it at 100% with my Android brightness at 100% I don't see any further brightness.
Also what is the advantage of this over the regular manual brightness?
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Click to collapse
I don't use it for brightness, I use it to dim the screen to a lower point that what you can do in the settings.

I've been using this app for a few months now. I love using it at night to watch a video in the dark, since the lowest setting for the brightness always seems to hurt my eyes in the dark.

That sounds unbelievable yet I believe it. I'd be concerned though that doing this might shorten the screen's life or damage it. As for that app it's been on my homescreen for a long time. Pretty essential.

Only problem is soft keys ofter are too bright for night veiwing
Sent from my SPH-D700 using xda premium

I have tasker set to open screen filter at a low brightness at 11 pm
/sig
Avelnan said:
Phones are going to come to life someday. Take note: LG Optimus line. ASUS Transformer. And now the Nexus Prime.
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Click to collapse

Automatic brightness - am I missing something ?

if I put the manual slider on 100%, and then tick the "automatic brightness", it stays at 100%, even in a fully darkened room.
if I put the manual slider on 0%, and then tick the "automatic brightness", it stays at 0%, even under direct sunlight.
What gives ? LG forgot to program this feature ?

Noam23 said:
if I put the manual slider on 100%, and then tick the "automatic brightness", it stays at 100%, even in a fully darkened room.
if I put the manual slider on 0%, and then tick the "automatic brightness", it stays at 0%, even under direct sunlight.
What gives ? LG forgot to program this feature ?
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I am not certain on this but my understanding of how the auto brightness works is that it adjusts within a certain % up or down of where you set the slider.
I am sure someone with a bit more knowledge will be along shortly to advise exactly how it works though

It appears to me that the 100% and 0% always do full on or full dimmed, whether you set auto brightness or not. Anywhere in between it does work with auto brightness, but the screen reacts quite slowly.

Auto brightness on this device is rubbish. Period. It doesn't work at all when you're set on 100 or 0 percent, and if you're in between, it works, but only buy using very slight changes to the manual setting that you chose. Why on earth did they base the auto brightness on the manual brightness???
Sent from my LG-D802 using XDA Premium 4 mobile app

auto brightness works quite well for me. I have it set as a 55% baseline and it always changes in more or less light. It takes a second but it will do it and works great. The slider does not show the change though.

Download Lux Auto Brightness.

bova80 said:
auto brightness works quite well for me. I have it set as a 55% baseline and it always changes in more or less light. It takes a second but it will do it and works great. The slider does not show the change though.
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No, it doesn't work well for you at all. If you put it at 55%, and go to direct sunlight, it will never come close to 100% brightness (I would say only about 60-70%). Moreover, if you go to a pitch black room, you will not get 1-2% brightness, rather ~30-40%. I would say the automatic brightness control of the G2, can only play with ~10% above/below what you set your manual settings. Who does automatic brightness like this ? pathetic and useless.

sacredsoul said:
Download Lux Auto Brightness.
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Click to collapse
I also use a 3rd party program to control brightness. My phone would just randomly uncheck auto brightness on its own. Not sure why it sucks so bad on this phone. So, check out Velis Auto Brightness in the play store. It disables system management of brightness, takes over the job.
Sent from my VS980 4G using xda app-developers app

D-meist said:
I also use a 3rd party program to control brightness. My phone would just randomly uncheck auto brightness on its own. Not sure why it sucks so bad on this phone. So, check out Velis Auto Brightness in the play store. It disables system management of brightness, takes over the job.
Sent from my VS980 4G using xda app-developers app
Click to expand...
Click to collapse
I used to use Velis too but it was a bit too cluttered for me. Lux was a whole lot more userfriendly. Plus it can reduce brightness below minimum levels and has a built in night mode that activates automatically. Found it best for my use.

Noam23 said:
No, it doesn't work well for you at all. If you put it at 55%, and go to direct sunlight, it will never come close to 100% brightness (I would say only about 60-70%). Moreover, if you go to a pitch black room, you will not get 1-2% brightness, rather ~30-40%. I would say the automatic brightness control of the G2, can only play with ~10% above/below what you set your manual settings. Who does automatic brightness like this ? pathetic and useless.
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whether it goes to 100% brightness or not it brightens up enough that I can see it clear as day. So why do I care if it doesn't get to 100%?

bova80 said:
auto brightness works quite well for me. I have it set as a 55% baseline and it always changes in more or less light. It takes a second but it will do it and works great. The slider does not show the change though.
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Click to collapse
You have no clue how are the brightness works.
Sent from my LG-D801 using xda app-developers app

shook187 said:
You have no clue how are the brightness works.
Sent from my LG-D801 using xda app-developers app
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and like I said, why do I care if it is changing brightness to levels I can see for the given light I'm in what does it matter? Apparently it is doing something right.

Have seen a lot of varied answers on this topic but having owned an iPhone in the past LG has set up their brightness controls to work in much the same way. You basically have two independent controls that can be combined to work together.
For example, I have my brightness on 85% and Auto is checked to ON. This means brightness will adjust automatically but never exceed 85%. You are setting a ceiling and it will NEVER go to 100% bright if set this way. If I turn Auto OFF, its always 85% regardless of ambient light. Hope this helps some peeps understand this better. I actually prefer their implementation but it's familiar to me.
Sent from my VS980 4G using Tapatalk

nateinva said:
Have seen a lot of varied answers on this topic but having owned an iPhone in the past LG has set up their brightness controls to work in much the same way. You basically have two independent controls that can be combined to work together.
For example, I have my brightness on 85% and Auto is checked to ON. This means brightness will adjust automatically but never exceed 85%. You are setting a ceiling and it will NEVER go to 100% bright if set this way. If I turn Auto OFF, its always 85% regardless of ambient light. Hope this helps some peeps understand this better. I actually prefer their implementation but it's familiar to me.
Sent from my VS980 4G using Tapatalk
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now this makes sense, if only someone explained it like that before, rather than saying you don't know what you are talking about.

nateinva said:
Have seen a lot of varied answers on this topic but having owned an iPhone in the past LG has set up their brightness controls to work in much the same way. You basically have two independent controls that can be combined to work together.
For example, I have my brightness on 85% and Auto is checked to ON. This means brightness will adjust automatically but never exceed 85%. You are setting a ceiling and it will NEVER go to 100% bright if set this way. If I turn Auto OFF, its always 85% regardless of ambient light. Hope this helps some peeps understand this better. I actually prefer their implementation but it's familiar to me.
Sent from my VS980 4G using Tapatalk
Click to expand...
Click to collapse
This explanation contains logic, while LG's automatic brightness control, contains none. If you set brightness at 85%, and turn automatic brightness ON, assuming 85% set the top ceiling, then going into a pitch black room will still allow the LG to turn brightness to something like 5%. In reality, it doesn't happen, even in pitch black rooms, the LG is still close to 85% (maybe 65%), which is totally blinding. If you want to see how a working automatic brightness control behave, install lux brightness control.

Noam23 said:
This explanation contains logic, while LG's automatic brightness control, contains none. If you set brightness at 85%, and turn automatic brightness ON, assuming 85% set the top ceiling, then going into a pitch black room will still allow the LG to turn brightness to something like 5%. In reality, it doesn't happen, even in pitch black rooms, the LG is still close to 85% (maybe 65%), which is totally blinding. If you want to see how a working automatic brightness control behave, install lux brightness control.
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Click to collapse
I don't disagree with this at all....I'm still observing some odd/unexpected behavior and you're right.....it doesn't seem like there is enough 'travel range' when using auto in very dark environments. 85% in regular/full light should scale down dramatically in a dark room...one would think?
I actually prefer my screen brighter though so this hasn't bothered me, but that is personal preference and definitely not one size fits all. I have used the built-in controls on CM based ROMs on a few of my other devices before the G2 and you get much more fine-grained control there. I will say though that as far as the stock brightness controls go, the G2 behaves identically to the 2 iPhones I've used. If anyone reading is interested and has a friend with an iPhone, hop into the settings and look at the brightness controls. I think you'll see where LG drew some inspiration.
Loving this phone overall....best I've owned so far! I purchased off contract and sold my Droid RAZR MAXX HD on Swappa....couldn't be happier.

Noam23 said:
This explanation contains logic, while LG's automatic brightness control, contains none. If you set brightness at 85%, and turn automatic brightness ON, assuming 85% set the top ceiling, then going into a pitch black room will still allow the LG to turn brightness to something like 5%. In reality, it doesn't happen, even in pitch black rooms, the LG is still close to 85% (maybe 65%), which is totally blinding. If you want to see how a working automatic brightness control behave, install lux brightness control.
Click to expand...
Click to collapse
Did you use any android phone before the G2?they all work the same way,sony Samsung,lg....
You are right that the auto brightness should go from zero to 100% depends on the available light but all the brands i used have the same auto brightness.
I think it's something related to android.
Sent from my LG-D802 using xda premium

Noam23 said:
No, it doesn't work well for you at all. If you put it at 55%, and go to direct sunlight, it will never come close to 100% brightness (I would say only about 60-70%). Moreover, if you go to a pitch black room, you will not get 1-2% brightness, rather ~30-40%. I would say the automatic brightness control of the G2, can only play with ~10% above/below what you set your manual settings. Who does automatic brightness like this ? pathetic and useless.
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if you set it at 55% or any other, then that's your max even when you go into sunlight.
Sent from my LG-D800 using xda app-developers app

gm007 said:
Did you use any android phone before the G2?they all work the same way,sony Samsung,lg....
You are right that the auto brightness should go from zero to 100% depends on the available light but all the brands i used have the same auto brightness.
I think it's something related to android.
Sent from my LG-D802 using xda premium
Click to expand...
Click to collapse
It wasn't like this with my Galaxy s2.
Sent from my LG-D802 using XDA Premium 4 mobile app

Noam23 said:
It wasn't like this with my Galaxy s2.
Sent from my LG-D802 using XDA Premium 4 mobile app
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Click to collapse
Yes because there was not any slider to tweak the auto brightness settings.
Sent from my LG-D802 using xda premium