Database Users

Screen brightness goes down automaticaly.

Hi,
Everytime my battery goes down 15%, my screen brightness goes to almost 0.
I cant see any setting to change this.
I dont have any app to do that.
Currently rba023 rooted.
Thank you
Sent from my X10i using XDA App

If there's a way to change it I would like to know as well. It's very hard to see for that last 15%.
Wish I could help.

The last 15% would last no time if it was at normal brightness. It's designed for, you know, if you need to use it in an emergency ;-)

To get your brightness back go to the sound and display setting and click brightness. It returns it to full brightness. When your battery drops to 10% and 5% it will do the same.
As far as I'm aware there isn't a proper solution to this.

My issue with the brightness is the "auto brightness" function seems backwards to me.
E.g. if I am in direct sunlight, auto brightness turns the brightness of the screen way down, which means I can hardly see it. If anything the brightness should be turned UP.
If I am in a dark room, auto brightness turns the brightness up, when really, turning it down would be better as it doesn't need to be as bright in a dark room. So it should be turned DOWN automatically.
It's arse-over-tit, as we say.

Yes,
But now with root, i'm sure anyone with the right knowledge can modify this 'stock setting' ! ...
Anyone to try it?
Cheers!
misterzak said:
To get your brightness back go to the sound and display setting and click brightness. It returns it to full brightness. When your battery drops to 10% and 5% it will do the same.
As far as I'm aware there isn't a proper solution to this.
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Hi mine seems fine.. Yours however does, as you say, seem arse over tit.
Sent from my x10 using XDA and swype.

This doesn't really fix the query but for fast access to adjust the brightness I use an app called QuickSettings which I have on my front screen to give quick access to some basic settings. On the brightness adjuster you have to have the phone settings not on automatically adjust.

My screen is too bright, what will make it dim below "10"?

Even on the dimmest settings, the Vibrant is too bright for me in bed, where the light disturbs my wife.
It seems that, with root, you can lower the brightness further - at least on other phones. Is there any way to do this with the Vibrant?
Thanks!

The "Dimmer" app will toggle it from your current brightness down to 10 but if you find something that will go lower let me know.

It has an automatic brightness control based on input from the sensor. You may need to disable this in the settings too, but I would think it would be automatically dimming itself already in a dark room.

Dallasalien said:
It has an automatic brightness control based on input from the sensor. You may need to disable this in the settings too, but I would think it would be automatically dimming itself already in a dark room.
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Right, but that doesn't get dim enough in some situations and the minimum brightness you can select manually is 30. "Dimmer" will take it all the way to 10 but I would like to see something that would take it to 1 or 2.

I agree. It's too bright in low light situations.
If you find a solution please post it.

Try the Screen Filter App from the market. You can get UNBELIEVABLY low brightness. Which means much better battery.

+1 on screen filter. New version now dims taskbar too.

Screen Brightness refuses to stay at down

I would like to have my screen brightness turned all the way down. This is my 2nd epic (1st one's menu soft key wasn't sensitive like the other soft keys) I go into the settings and set it that way as well as in the browser. I've tried having it setup with and without the power saving mode option selected, but no matter what, the screen brightness always changes to a higher setting on its own. I cycle through the power control widget and dim it back to 0 all the time but it doesn't remember the setting. I also notice that in some apps the brightness is raised i.e. market. What am I doing wrong? My bet is Samsung has an annoying glitch that they need to fix ASAP!
Sent from my SPH-D700 using XDA App

Black06STI said:
I would like to have my screen brightness turned all the way down. This is my 2nd epic (1st one's menu soft key wasn't sensitive like the other soft keys) I go into the settings and set it that way as well as in the browser. I've tried having it setup with and without the power saving mode option selected, but no matter what, the screen brightness always changes to a higher setting on its own. I cycle through the power control widget and dim it back to 0 all the time but it doesn't remember the setting. I also notice that in some apps the brightness is raised i.e. market. What am I doing wrong? My bet is Samsung has an annoying glitch that they need to fix ASAP!
Sent from my SPH-D700 using XDA App
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I noticed mine does that too. It will randomly be at a higher brightness setting. Also, the lowest brightness is WAY too bright! 0 on the epic is equivalent to 35 on the EVO.

Maybe when your pulling down the notification bar your sliding across on accident just enough to make it change brightness. Remember the brightness changes in your bar.....

i've got a vibrant but mine's doing same - hasn't done it that often, but does it
i found a small app for screen brightness control that displays the brightness percentage running as part of the icon, - just yesterday it had jumped from 11% to 52% on it's own
have no idea what gremlins are at work here

smashpunks said:
Maybe when your pulling down the notification bar your sliding across on accident just enough to make it change brightness. Remember the brightness changes in your bar.....
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Coming from WM I was not aware of this gesture. I did notice sometimes when pulling the tray down it would do it. I need to read an android for dummies book and see if there's any other hidden jedi mind tricks that can be done.
I compared my brightness at 0 to an iphone4 all the way down, EVO, G1, Hero, BB Bold, and my former WM phones and the epic is way too bright at 0. I wish there was a way to keep the brightness set to the same setting when the screen dims in some apps, that would be ideal.
Good to see I'm not the only one with this issue and definitely getting a screen brightness icon in the notification panel will be very helpful to track samsung's shiesty shenanigans!
P.S.
The screen brightness increased on its own while typing this message from the xda app....
Sent from my SPH-D700 using XDA App

Doesn't the epic have an ambient light sensor for screen britness control?

kgold708 said:
Doesn't the epic have an ambient light sensor for screen britness control?
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Yes but sometimes that's too bright, I'd rather have it set all the way down and stay down and raise it as needed on my own.
Sent from my SPH-D700 using XDA App

Black06STI said:
Yes but sometimes that's too bright, I'd rather have it set all the way down and stay down and raise it as needed on my own.
Sent from my SPH-D700 using XDA App
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This is when a custom rom will be handy... no other way to get around it I don't think. I use adw and have my swipe down gesture for notification bar. That way I never have to reach all the way up.
Sent from my SPH-D700 using XDA App

Brightness control
There is a setting under Sound and Display > Display Settings, called Power Saving Mode. I disabled this along with the automatic brightness control and my screen brightness hasn't changed since. Not sure if this is your issue but couldn't hurt to try.......

erickh said:
There is a setting under Sound and Display > Display Settings, called Power Saving Mode. I disabled this along with the automatic brightness control and my screen brightness hasn't changed since. Not sure if this is your issue but couldn't hurt to try.......
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He did say he have used this setting before.

There's the power saving mode AND there's also the automatic brightness control. Two different settings. I turned both off and I haven't really seen the brightness change since.
Incidentally, disabling the automatic brightness control (in the brightness menu) has greatly improved my battery life.

Firon said:
There's the power saving mode AND there's also the automatic brightness control. Two different settings. I turned both off and I haven't really seen the brightness change since.
Incidentally, disabling the automatic brightness control (in the brightness menu) has greatly improved my battery life.
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Did you read the first post? It said he did BOTH.

Fixter said:
Did you read the first post? It said he did BOTH.
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Fixter, you beat me to it.... We need to find a way to get the phone to stay dim like when the XDA app is searching/refreshing. This would be ideal if that would be the baseline for 0% brightness. I hate how the Eclair browser's brightness 0% is one tick higher than using quick settings to turn the brightness down. Too bad I don't know how to develop, as this would be the first thing I would fix!
Sent from my SPH-D700 using XDA App

I think that it's easy to accidentally change the screen brightness when pulling down the notification bar.
Once I realized that...I haven't had any problem keeping my Vibrant at minimum brightness.
Sent from Samsung Vibrant

I have figured it out been having the same issue since I got the phone was driving me nutsbut I have noticed two things one if u slide notification bar down a lil then slide left it lowers and right it highers and two sumtimes when sliding the notification bar down I sumtimes slide over light senson snd if hand is oily u produce a smudge over it causing it to lower brightness or higher

Crappy Automatic Brightness Sensor?

Is it just me or does everyone's Epic's have terrible brightness sensor hardware/software? My sensor seems to have about 2-3 settings of brightness, and goes from completely dim to super bright in random situations and nothing in between.
Cyanogen just posted on his twitter that in the past he changed the sensor's abilities through coding modifications. Could we do something of the sort for the Epic's sensor?

Agreed. The sensor is horrible. Also, the transition between brightness settings when set to automatic is near instant instead of slowly transitioning, which makes it more obvious that its changing brightness.

I would agree that it is terrible. Mine also send to sometimes turn auto brightness back on if I've turned it off.
It would be great if someone found a way to mod the code for it!
Sent from my SPH-D700 using XDA App

I thought the screen was just too bright at its lowest setting. Fortunately someone came up with a fix for it that can be found in the developer section. As far as the automatic sensor I would suggest turning off "Power Saving Mode" in the Settings>Sound & Display as well. I've read somewhere that this causes the brightness level to vary on its own.

cfiblc said:
I thought the screen was just too bright at its lowest setting. Fortunately someone came up with a fix for it that can be found in the developer section.
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Hehe, that was me. Stay tuned for more. I have coded up and will post, tonight, a new version that will let you modify the brightness curve (from the command line, for now)
As for automatic mode, I have figured out how to modify some aspects of it at the kernel level, such as the ambient light thresholds at which it switches to a different brightness level. By modifying the brightness curve, we can achieve at least some more control. But to make it really good may be significantly harder.
Personally, since manual brightness is always available by swiping horizontally on the status bar, I have little desire to use auto mode anyway.
- linuxuberant

The sensor is actually pretty sensitive. It's just that Samsung chose to have a really small range of brightness steps for automatic brightness.

Firon said:
The sensor is actually pretty sensitive. It's just that Samsung chose to have a really small range of brightness steps for automatic brightness.
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More like they installed an awesome dimmer switch and lights, but the fixture only does three modes; high, medium, and still pretty damn bright.

Auto brightness only brightens, never dims

I noticed that the brightness only brightens but never dims back in automatic brightness display setting. I can reproduce this easy with turning the lamp on my desk on and off. It only goes back to the lower brightness if turning the screen off and on again.

Noticed this too but seems to only occur when I use a widget to toggle between Auto and 100%.
If I leave the setting in Auto from within settings then it seems to work. Brightness widgets seem to break the auto functionality.

Hmm, I don't use a brightness widget. The light of the softbuttons go on if I cover the light sensor, but the screens stays in high brightness.

Strahlenkanone said:
Hmm, I don't use a brightness widget. The light of the softbuttons go on if I cover the light sensor, but the screens stays in high brightness.
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Must be an all around bug then. If you turn the Atrix off and back on then the auto brightness functionality is restored.

Strahlenkanone said:
I noticed that the brightness only brightens but never dims back in automatic brightness display setting. I can reproduce this easy with turning the lamp on my desk on and off. It only goes back to the lower brightness if turning the screen off and on again.
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This must be an Android thing. My Atrix does the same thing, as did the Nexus One I had before. I've had several (high end) Nokia's that dimmed/brightened perfectly. After 5 seconds, they would brighten (or dim) accordingly. I was hoping Motorola was better at making phones than HTC (the KING of bad battery life). We ALL lose here. Our precious battery life is being drained by the poor execution of a simple function.

This is a stock android thing (problem). Custom ROMs can allow it to dim and change brightness smoothly rather than in discrete steps (Cyanogen).

That's what I thought. I found this free app called "esdimmer". It supposed to be for Galaxy phones, but it's somewhat working on my Atrix. Does this function work any better in Gingerbread?
Sent from my MB860 using XDA App

Well it's good to hear that it's a stock android problem and not the actual phone. I did find a way to get around this problem but it's very limited. You can get the screen to dim by first putting the phone into standby and then press the standby button once again (which gets you into the lock screen). You'll notice that the screen then dims (if coming from a well lit area/room to a darker one).