noticed different brightness between 2 devices - Samsung Galaxy Nexus

just curious if these screens are actually calibrated my first i had a transparant line running down the centre of screen, my second appears fine however when i set it to the same brightness as my first nexus i was getting heavy banding on dialer / greys with task bar pulled down.
So i lowered brightness to 35% and all seems well , however 35% brightness on this is around the same as 65% on my first device. Not so much a issue but did think it was strange as this would affect auto brightness settings between devices.

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[Q] Automatically Adjust brightness option?

Hello all,
I'm just curious as to how this feature is supposed to work. I have my device set to automatically adjust while it's on medium brightness and I've noticed that the brightness jumps from low to medium frequently, especially when I'm on just one page.
manny84 said:
Hello all,
I'm just curious as to how this feature is supposed to work. I have my device set to automatically adjust while it's on medium brightness and I've noticed that the brightness jumps from low to medium frequently, especially when I'm on just one page.
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I believe it just counts the number of white pixels on the screen on the omnia. this is why it jumps so much. The only way to prevent the jumping is to set the birghtness on low, with the auto setting off. Even on medium or high it jumps when the page has a certain % of white pixels. Like for opening the browser its really annoying however on low brightness the colours are really nice and its just perfect for me. Its just too bright on med or high brightness for my preferences.
But the way how the "feature" itself work I have no clue. Maybe a light sensor. But the jumpiness is caused by the number of white pixels on the amoled screens, and occurs only on samsung devices I believe.
Marvin_S said:
I believe it just counts the number of white pixels on the screen on the omnia. this is why it jumps so much. The only way to prevent the jumping is to set the birghtness on low, with the auto setting off. Even on medium or high it jumps when the page has a certain % of white pixels. Like for opening the browser its really annoying however on low brightness the colours are really nice and its just perfect for me. Its just too bright on med or high brightness for my preferences.
But the way how the "feature" itself work I have no clue. Maybe a light sensor. But the jumpiness is caused by the number of white pixels on the amoled screens, and occurs only on samsung devices I believe.
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Thanks for that explanation, Marvin

Auto brightness is a major problem with this phone

Been playing with my new phone and love it but man is the auto brightness a piece of crap. It sets the backlight so low you get weird banding on solid colors and off whites. Just turn brightness to 30% or so and boom its a whole different screen, colors pop and I don't notice any banding. Whites are great too.
They need to fix this fast since it comes with auto brightness on and its going to give people a bad impression.
Sent from my Galaxy Nexus using xda premium
That's the first thing I did.
auto-brightness is always a little too aggressive for my liking..
It was a problem with the Nexus S as well. Drove me nuts.
Seems AOSP roms are very aggressive with dimming.
mobilehavoc said:
Been playing with my new phone and love it but man is the auto brightness a piece of crap. It sets the backlight so low you get weird banding on solid colors and off whites. Just turn brightness to 30% or so and boom its a whole different screen, colors pop and I don't notice any banding. Whites are great too.
They need to fix this fast since it comes with auto brightness on and its going to give people a bad impression.
Sent from my Galaxy Nexus using xda premium
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known issue. Manufacturers tend to be really aggressive with this so you can get better battery life (yea I know.. pointless right?)
Just wait for custom ROMs. Or go download paulobrien's tweak for the automatic brightness settings. (of course, as others have said, you can just turn it off)
auto brightness has always sucked on Android, iOS has a customizable auto brightness that adjust to the level you put it on initially, where as on Android there's no option to adjust the default brightness when auto brightness is enabled.
rashad1 said:
auto brightness has always sucked on Android, iOS has a customizable auto brightness that adjust to the level you put it on initially, where as on Android there's no option to adjust the default brightness when auto brightness is enabled.
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Not just iOS, even my 3 year old Nokia allows you to adjust the level of auto brightness. Wish this is native to Android. I found my Nexus One too dim on auto brightness too.
Edit (deleted): redundant post about paulobriens fix
The auto-brightness doesn't just seem too low to me but also buggy. Most of the time it's really dim, but occasionally it will suddenly shoot up to a decent level
Has anyone tried this app? https://market.android.com/details?id=com.nnevod.loggraph&feature=search_result
I find it too bright.. the display is perfectly usable on minimum brightness in a normally lit room bit it keeps winding the brightness up, draining the battery. It seems stuck on about 50%.
My Nexus S did the same thing.. Drove me nuts. I had to switch it off and force it to minimum half the time.
Hopefully the ability to tweak the levels in detail will be ported over from CM7 later. For now, you can use PaulOBrien's kernel where he adjusted it.
TonyHoyle said:
I find it too bright.. the display is perfectly usable on minimum brightness in a normally lit room bit it keeps winding the brightness up, draining the battery. It seems stuck on about 50%.
My Nexus S did the same thing.. Drove me nuts. I had to switch it off and force it to minimum half the time.
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Same here, with my Nexus S, too bright.
This is one of the first things I do when flashing a rom on my incredible. They usually have to ramp down the brightness very quickly, probably for battery life. Cm has the tool hopefully it will be loaded soon.
Sent from my ADR6300 using XDA App
It would be nice if google added an option to set the max and min brightness used during auto. You could just raise floor a little.
Sent from my Nexus S using Tapatalk
Problem I've realized is on SAMOLED devices the screen is an absolute battery killer so there's no wonder they are aggressively keeping it dim. I bet if you ran this phone at 100% brightness just sitting idle it'd last like 10 mins

[Q] Screen brightness very high without auto brightness

Does anyone know why when I turn off auto brightness, my screen gets so much brighter? Even if I have brightness set as low as it can go, it still seems alot brighter than it should be. Which must kill the battery.
Sent from my R800a using XDA App
If you'd like to compare battery life between the two theres apps for it
But as its been said, better for the battery to have the light a little brighter than constantly be changing.
If you're rooted, Rootdim (search the Market, I can't post links yet) allows you to power down the backlight below the lowest option in Display Settings. It's nice for using the phone in the dark or with a bedside lamp and should minimise battery use if you've got auto-brightness turned off as well.
The only worry is the reviewer on the Market who said its lock option kept the backlight on (at a dim setting) after shutting the screen off on his Droid Bionic but I can't say I've noticed that on my Play.
Thanks, that Rootdim is what I needed.
I tried setting it to MAX, who in the hell needs it that high?! I didn't even know it could go that high, make it a white screen and you've got a flashlight!

Auto Brightness Turning Off

I've had my One X for a week or so now and seem to be having some issues with the Auto Brightness since upgrading to 1.28.
I am still using stock, un-rooted rom and I leave Auto-brightness on most of the time. Sometimes when my battery might be nearing empty I use a widget called 'Dimmer' which just toggles between whatever the current setting is and the lowest possible brightness (it represents that as 10 out of 255). If you use the normal brightness slider, the lowest value (at least according to 'Dimmer' ) is 30.
Now recently when I unlock my phone, the screen has been constantly dim and the brightness is set to 30, which means that Auto Brightness is NOT on and Dimmer is not on. When I check in the settings, the brightness slider is all the way down and I never set this up.
I used dimmer for about a year before now on my old Desire and it was flawless so I doubt its that, and it seems to work on 1.26 fine.
Just wondering if anyone else had been seeing random brightness drops or Auto Brightness disabling sometimes? If so, are you using a 'Dimmer' like widget?
Thanks,
Tinytom21

Adaptive brightness too dramatic?

I've seen a couple posts about delays with adaptive brightness, but this is a different item. I'm seeing that the adaptive brightness alters the brightness a little too dramatically. In a somewhat dark room (not pitch black) the brightness will be at absolute minimum even when the brightness is about 1/3 up on the slider. In a moderately bright room that same brightness setting will be near maximum.
Does anyone else notice this as an issue? I'm just wondering if it's normal (ie, software calibration issue) or if the brightness sensor might not be seated correctly.
It's normal. Or at least it sounds like it is working the same way mine is. And yes, IMO it is a little too sensitive. The Lux app works beautifully if you want an alternative. Also, the goog is known for tweaking this feature over time with updates.
I've noticed this too. The biggest thing for me is walking down the street at dusk (so not dark out yet) I can't read the screen as it turns it all the way down, then, when I walk under a street light, it turns it all the way up to full! It's one extreme or the other, there seems to be no middle ground.
In other words "adaptive brightness has mind of its own!"
This is why I have always kept this setting off. The brightness just changing on its own always annoyed me.
When it works properly (and it should) for ones uses, it's great, it's automatic, what's not to like? It's a pita to always have to change brightness manually just to see a phone display depending on ambient lighting which varies immensely for many users.
jbdan said:
When it works properly (and it should) for ones uses, it's great, it's automatic, what's not to like? It's a pita to always have to change brightness manually just to see a phone display depending on ambient lighting which varies immensely for many users.
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I agree. I have it set to maybe around 15-20% (centered over the WiFi symbol below it) and I never need to touch it. Gets dark enough for night driving and bright enough to read outside. Never found it stuck on one or the other when it shouldn't be.
Sent from my Nexus 5X using Tapatalk
If you buy the app Lux you can customize how it adapts your brightness. The free version is good to but you have to use mostly default settings. By default it only adapts brightness when the screen turns on.

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