Database Users

Kernel makers, please add the ability to adjust auto brightness.

Please add the option of modifying auto-brightness levels, like CM 6.1. I suppose that it would require a kernel modification + an app to do this through gui.
Thanks.

What can CM do? I've been thinking it would be nice to be able to modify the min and max, and maybe the curve.

Thread moved to General.

Noxious Ninja said:
What can CM do? I've been thinking it would be nice to be able to modify the min and max, and maybe the curve.
Click to expand...
Click to collapse
It allows one to arbitrarily edit a table of sensor output vs brightness/button brightness.
It's really nifty.
CM6.1 reports these sensor values:
10, 160, 225, 320, 640, 1280, 2600, 10240
10-160 is in dimly lit indoors, 320-640-1280, in moderately to brightly lit indoors, and the rest is outside.
So I set those to brightness something like 50,60,70,80, 110, 140, 180, 255. A it was perfect to my eye. Not too bright, not too dim.
Didn't ever have to mess with brightness after that.

I'd really like to hear from developers like Netarchy and King, as well as from regular users - if they would like that option.

I would love to see this.
I always feel the auto-sensor tends to be too bright, and never adjusts the screen low enough inside.

rdwing said:
I would love to see this.
I always feel the auto-sensor tends to be too bright, and never adjusts the screen low enough inside.
Click to expand...
Click to collapse
That's exactly what I think. Plus, the brightness is not at maximum in direct sunlight (although that might be a safety feature).

Mine always send to bright, or it won't get bright when I go into a bright area until I sleep and wake it. :|
Sent from my EVO 4Gizzle.

+1 on this. So motivated that I searched for this thread....

Any news?
-----------

The stock auto-brightness is way too bright in completely darkness. This is one of the things I had on my list nearly since the beginning. Nobody else seemed to care.
http://forum.xda-developers.com/showthread.php?t=716547

An article showing how useless auto-brightness is:
http://gizmodo.com/5673444/why-exis...d-brightness-controls-are-effectively-useless
Do people not notice this or do they just not care?

Pretty sure people have given up on this. It's taken me three days of Google searching to find this thread so people probably don't know where to turn.
The lack of adjustments to the auto brightness values is extremely annoying. Even my old Windows mobile 6 phones had this ability.

AdamN said:
Pretty sure people have given up on this. It's taken me three days of Google searching to find this thread so people probably don't know where to turn.
The lack of adjustments to the auto brightness values is extremely annoying. Even my old Windows mobile 6 phones had this ability.
Click to expand...
Click to collapse
There was an application for WM I used to use on my Mogul, cant remember what it was called but it allowed you to calibrate the auto brightness levels. Anyone know what I'm talking about, or if there's an Android version?

This can be done with Tasker in the Market. Its a powerful app and there was a thread a while back about this exact thing. I don't remember what it was called, but I posted in it, so you could browse my posts from a month or so ago.
Hey... This thing makes phone calls too!

[BOUNTY] Manually adjusting autobrightness levels. $60.

I'd like to start this bounty thread with a $50 offering.
The requirement is to hack official HTC Sense roms to be able to set levels of brightness which autobrightness uses.
It could be done via an app, or a file edit, or the way cm6.1 does it. And it should be supported for the future OTA releases.
The only true requirement is that I never have to worry about setting brightness again, after I tweak the brightness values to my own eyes.
(technical: autobrightness adjusts the brightness of the lcd by reading the light level sensor. CM6 allows one to edit the table of brightness vs. light sensor. Sense might implement the autobrightness differently. Regardless of the implementation, the default values of brightness, that autobrightness uses, should be adjustable.)

In for $10
Sent from my PC36100 using XDA App

....have you tried using spare parts..... there is a setting for that in the application

oshizzle1991 said:
....have you tried using spare parts..... there is a setting for that in the application
Click to expand...
Click to collapse
Sorry. No, there isn't.
Bounty updated.

edit your /system/build.prop from
Code:
# default value of brightness
settings.display.brightness=143
to whatever you would like. higher is brighter, lower is darker. xD
if this works for you, heres my donate link.

es0tericcha0s said:
edit your /system/build.prop from
Code:
# default value of brightness
settings.display.brightness=143
to whatever you would like. higher is brighter, lower is darker. xD
if this works for you, heres my donate link.
Click to expand...
Click to collapse
Sorry, what is this?

nabbed said:
Sorry, what is this?
Click to expand...
Click to collapse
It's your build.prop, located in /system, just like he said.

es0tericcha0s said:
edit your /system/build.prop from
Code:
# default value of brightness
settings.display.brightness=143
to whatever you would like. higher is brighter, lower is darker. xD
if this works for you, heres my donate link.
Click to expand...
Click to collapse
Thanks might make that adjustment in my next ROM.

es0tericcha0s said:
edit your /system/build.prop from
Code:
# default value of brightness
settings.display.brightness=143
to whatever you would like. higher is brighter, lower is darker. xD
if this works for you, heres my donate link.
Click to expand...
Click to collapse
That really has nothing to do what I was asking about in the op.

nabbed said:
That really has nothing to do what I was asking about in the op.
Click to expand...
Click to collapse
Try the CM6 nightlies, they have exactly what you are asking for.

dkelle4 said:
Try the CM6 nightlies, they have exactly what you are asking for.
Click to expand...
Click to collapse
The point is to do it in sense roms.

How does it not? that edit in your build prop will set the auto brightness level. Are you looking for an app or something?
Sent from my ADR6300 using XDA App

nabbed said:
I'd like to start this bounty thread with a $50 offering.
The requirement is to hack official HTC Sense roms to be able to set levels of brightness which autobrightness uses.
It could be done via an app, or a file edit, or the way cm6.1 does it. And it should be supported for the future OTA releases.
The only true requirement is that I never have to worry about setting brightness again, after I tweak the brightness values to my own eyes.
(technical: autobrightness adjusts the brightness of the lcd by reading the light level sensor. CM6 allows one to edit the table of brightness vs. light sensor. Sense might implement the autobrightness differently. Regardless of the implementation, the default values of brightness, that autobrightness uses, should be adjustable.)
Click to expand...
Click to collapse
Seems to be exactly what you asked for?
Sent from my ADR6300 using XDA App

nabbed said:
It could be done via an app, or a file edit, or the way cm6.1 does it.
Click to expand...
Click to collapse
He provided what you asked for, edit the file and you got it!
Sent from my HTC Evo 4G using XDA App

I would like this issue to be fixed as well, but am curious to know how much a table would actually help. It seems that it may not be as bright outside as it is inside sometimes, but the sun reflects light a lot worse than a ton of florescent or artificial light does. When i am inside and all the lights are on, i can still read my phone with the brightness at 15%. But when its cloudy outside it needs to be at 100% or its hard to read from a direct angle. I would almost prefer to leave my brightness at 15% all the time, and then use a hardware switch like hitting both volume rockers together to toggle 100% and 15% to change the brightness.
It would be awesome if the evo used the front facing camera to detect the sky behind you or even use the better light senser in a camera, to detect and adjust the brightness. Probably not great for battery.

auradefect said:
He provided what you asked for, edit the file and you got it!
Sent from my HTC Evo 4G using XDA App
Click to expand...
Click to collapse
How does changing that setting qualify for manually adjusting autobrightness values?
Here's how cm6 does it. It creates a table:
Light Sensor level - Brightness
10 - 50
160 - 60
225 - 70
320 - 80
640 - 110
1280 - 140
2600 - 180
infinity - 255(max)
The autobrightness reads the light sensor level and then sets the brightness to the corresponding brightness value.

S4Rs said:
I would like this issue to be fixed as well, but am curious to know how much a table would actually help. It seems that it may not be as bright outside as it is inside sometimes, but the sun reflects light a lot worse than a ton of florescent or artificial light does. When i am inside and all the lights are on, i can still read my phone with the brightness at 15%. But when its cloudy outside it needs to be at 100% or its hard to read from a direct angle. I would almost prefer to leave my brightness at 15% all the time, and then use a hardware switch like hitting both volume rockers together to toggle 100% and 15% to change the brightness.
It would be awesome if the evo used the front facing camera to detect the sky behind you or even use the better light senser in a camera, to detect and adjust the brightness. Probably not great for battery.
Click to expand...
Click to collapse
It works very well in cm6. It's not perfect, but when I was using cm6, I never had to worry about tinkering with brightness.

Moved to General

egzthunder1 said:
Moved to General
Click to expand...
Click to collapse
I'm sorry, how are developers going to find this thread now?

nabbed said:
I'm sorry, how are developers going to find this thread now?
Click to expand...
Click to collapse
Dev is for people posting roms, kernels, software in development, not for posting "requests for development" and is probably why it was moved.
Sent on the go from my HTC EVO

[Q] What are Gamma settings?

What exactly does gamma do?
I read somewhere that you can tweak gamma settings with no effect on battery life. So you can turn the screen brightness to the minimum and raise a color setting to make the screen contrast better.
It seems to be a popular feature in kernels, but what exactly do people aim to achieve by changing their gamma settings, I don't get it...

quoting myself from another thread:
dagaetch said:
2.2 is the value you want. As for why, see http://www.cambridgeincolour.com/tutorials/gamma-correction.htm; basically, electronic images are biased a certain way, and gamma correction is intended to remove that bias. since screens are different, you need different settings to correct the appropriate amount to reach 2.2, which apparently became the industry standard at some point.
Click to expand...
Click to collapse

It seems to be a popular feature in kernels, but what exactly do people aim to achieve by changing their gamma settings, I don't get it...
Click to expand...
Click to collapse
we aim at making our eyes happy

dagaetch said:
quoting myself from another thread:
Click to expand...
Click to collapse
Thank You! I think that pretty much halfway answers my question.
Now I wonder the effects of gamma settings on battery, and what brightness/gamma configuration is more 'eye pleasing'.
Is there a general consensious on what that configuration miht be on the Nexus 4 or will I have to play with settings to find out my own?

mastrgamr said:
Thank You! I think that pretty much halfway answers my question.
Now I wonder the effects of gamma settings on battery, and what brightness/gamma configuration is more 'eye pleasing'.
Is there a general consensious on what that configuration miht be on the Nexus 4 or will I have to play with settings to find out my own?
Click to expand...
Click to collapse
There's a few presets that you can find on xda but in reality they'll all need tweaked a bit. Like the other guy said, every screens different.
Nexus 4
ATT Straight Talk $45/mo
running xylon 2.1 4.2.2 faux kernel

mastrgamr said:
Now I wonder the effects of gamma settings on battery, and what brightness/gamma configuration is more 'eye pleasing'.
Click to expand...
Click to collapse
No effect on the battery. This phone has an LCD screen with a backlight, so no matter the colours, the battery drain is the same. The only possible side effect is of your gamma tuning leaves your screen so dark that you have to bump the brightness, which could affect the battery.
Sent from my Nexus 4

Gpad screen gamma is too low

Some of you may have noticed it's difficult to watch dark scenes in movies on the gpad. I think the problem is the gamma calibration, you can see it clearly on the pictures I took.
https://imageshack.com/i/nf96iaj
On the top you can see my nexus 7 2013, you can differentiate all the shades of grey from 1% white to 100%.
On the gpad, everything is solid black from 1% to 12% of white.
You can find the original image here : http://imageshack.us/f/594/6291.png/
How low can you go, on your gpad, before the grey melts with the black ?
Do you know an app to apply gamma correction ?
Here you can see the same picture on the N7 and the gpad. You can't even distinguish the guy's ear on the g pad.
https://imageshack.com/i/f563trj

bobo69 said:
Some of you may have noticed it's difficult to watch dark scenes in movies on the gpad. I think the problem is the gamma calibration, you can see it clearly on the pictures I took.
https://imageshack.com/i/nf96iaj
On the top you can see my nexus 7 2013, you can differentiate all the shades of grey from 1% white to 100%.
On the gpad, everything is solid black from 1% to 12% of white.
You can find the original image here : http://imageshack.us/f/594/6291.png/
How low can you go, on your gpad, before the grey melts with the black ?
Do you know an app to apply gamma correction ?
Here you can see the same picture on the N7 and the gpad. You can't even distinguish the guy's ear on the g pad.
https://imageshack.com/i/f563trj
Click to expand...
Click to collapse
I see the difference, and I knew it was there already also.. I'm sorry, but apparently gamma is not something that is doable. - I was looking to link you the app from market called "Screen Adjuster", however you want to look at this description, especially the last sentence. ;/
- dimming the screen 15-100% (below minimum system brightness)
- screen color and a contrast adjustment
- system brightness 0-100% adjustment
- functional widget (on/off, system brightness, settings)
- autorun option
Some phones have a color tint screen. This app have a possibility to try to improve colors on this kind of the screen by setting an additional factor RGB.*
The range of the dimmer is from 15% to 100% (it allows to dim the screen below a min system brightness value). Make a relief for your eyes during a nightly reading.
Furthermore, you can change fast the system brightness too.
The additional contrast factor can try to make the reading or a picture viewing more comfortable on some screens.*
The widget provides fast on/off service with a shortcuts to the Adjuster settings and the system brightness settings.
The application has the autorun option which works with the dimmer set above 22% (for the safety).
Note
A gamma adjustment is not possible to do.
You can of course try and download the app anyways and see if contrast or brightness will do anything for ya.
- In case you do download the app, remember that setting contrast low will result in problems with installing apps, as in you cannot hit Install, only cancel. To avoid this, open up Screen Adjuster and turn it off, install the app and turn it back on afterwards. It's something about lowering the settings to lower than what is "intended", I don't quite understand it and I find it rather odd. But it let's you install apps.. So I guess hooray.
That's all I got.

CuraeL said:
I see the difference, and I knew it was there already also.. I'm sorry, but apparently gamma is not something that is doable. - I was looking to link you the app from market called "Screen Adjuster", however you want to look at this description, especially the last sentence. ;/
That's all I got.
Click to expand...
Click to collapse
Thank you for your response, but I'm already using screen adjuster. I set the contrast at -25 and it helps a lot to see dark details.
Unfortunately, it has two side effects :
- it brightens the dark shades of grey, but also the black levels.
- I noticed that the contrast setting also affects the white making it look like light grey.
So the contrast setting in screen adjuster doesn't affects only the dark tones like it would on a monitor or a tv, it affects the contrast ratio.
I've found apps to make gamma adustment but it only works on some devices with custom kernel.
https://play.google.com/store/apps/details?id=com.teamkang.fauxclock&hl=fr
- Gamma curve (Galaxy Nexus, Nexus 4, HTC One, Nexus 7 2013)

bobo69 said:
Thank you for your response, but I'm already using screen adjuster. I set the contrast at -25 and it helps a lot to see dark details.
Unfortunately, it has two side effects :
- it brightens the dark shades of grey, but also the black levels.
- I noticed that the contrast setting also affects the white making it look like light grey.
So the contrast setting in screen adjuster doesn't affects only the dark tones like it would on a monitor or a tv, it affects the contrast ratio.
I've found apps to make gamma adustment but it only works on some devices with custom kernel.
https://play.google.com/store/apps/details?id=com.teamkang.fauxclock&hl=fr
- Gamma curve (Galaxy Nexus, Nexus 4, HTC One, Nexus 7 2013)
Click to expand...
Click to collapse
Yea, I was about to say that gamma can be done but only on custom kernels. Lot of Nexus 5 stuff on the market. Apparently it's Google who locked the gamma settings completely down but only in 4.4.2. I guess it may work on stock LG Kernel since it's only 4.2.2? I'm afraid we'll have to wait for some kernel support for other roms. That would be awesome. I really hope for some Franco-kernel-glory on this device.

That's what I thought, we need to wait for custom kernels...I hope it will come soon, because it's so frustrating to have such a good screen with bad calibration !
People tends to complain too much about the warm white balance but the gamma calibration is far more concerning.

bobo69 said:
That's what I thought, we need to wait for custom kernels...I hope it will come soon, because it's so frustrating to have such a good screen with bad calibration !
People tends to complain too much about the warm white balance but the gamma calibration is far more concerning.
Click to expand...
Click to collapse
I hope @dalingrin can cook something up to address both. He said he was going to work on something.

joshuadjohnson22 said:
I hope @dalingrin can cook something up to address both. He said he was going to work on something.
Click to expand...
Click to collapse
Yes it would be great if he did , though he's done so much for us already.
Sent from my LG-V500 using XDA Premium 4 mobile app

I see someone had developed a nude kernel for our devices. I welder off they can add support for gamma adjustment
Sent from my LG-V500 using Tapatalk

I am pleased to say my new kernel BOB Kernel v2 has had the gamma corrected

My first post ever
YoungBobbie said:
I am pleased to say my new kernel BOB Kernel v2 has had the gamma corrected
Click to expand...
Click to collapse
Hi there Young Bobbie, I am new to posting on XDA so I couldn't post this in your kernel developer page. This is my first post on any forum page ever. First off, thank you very much for your hard work to make this kernel happen to correct gamma on the v500. I have been sitting on the fence whether to get the gpad, and if i would get the v500 or the v510. Was leaning toward the v510 because of Sleekmason's wonderful kernel work, but it's exciting that we have now have the same options available for the v500. I noticed this was working fully with the Malladus ROM. My question to you was whether or not this worked with stock LG ROM as well? Thank you again YoungBobbie and Sleekmason for your time and creations.
Sorry, just answered my own question. Guess it helps to read the very first line of the page (making fun of myself now ;-P) Thank you again YoungBobbie and sleekmason!!!

themorningwolf said:
Hi there Young Bobbie, I am new to posting on XDA so I couldn't post this in your kernel developer page. This is my first post on any forum page ever. First off, thank you very much for your hard work to make this kernel happen to correct gamma on the v500. I have been sitting on the fence whether to get the gpad, and if i would get the v500 or the v510. Was leaning toward the v510 because of Sleekmason's wonderful kernel work, but it's exciting that we have now have the same options available for the v500. I noticed this was working fully with the Malladus ROM. My question to you was whether or not this worked with stock LG ROM as well? Thank you again YoungBobbie and Sleekmason for your time and creations.
Sorry, just answered my own question. Guess it helps to read the very first line of the page (making fun of myself now ;-P) Thank you again YoungBobbie and sleekmason!!!
Click to expand...
Click to collapse
Gald to have helped would you be willing to try the kernel for the stock LG ROM?

Please take a look at the images below and compare
The tablet on the right is running my kernel and the left stock
You can see the differences on the first image as the deepness of the blacks
and on the second the highlights on the white

I just about to get this tablet, then i so this problem... ?
Sent from Note 3 Superphone!

Bob2702 said:
Gald to have helped would you be willing to try the kernel for the stock LG ROM?
Click to expand...
Click to collapse
Be happy to. Have to acquire the device first, which will be in a matter of a week or 2

Nexus 6P brightness mod

Gday guys just wondering if this phone will be capable of a extra brightness mod like the nexus 6 was. In sunlight this phone is difficult to read..

pafc66 said:
Gday guys just wondering if this phone will be capable of a extra brightness mod like the nexus 6 was. In sunlight this phone is difficult to read..
Click to expand...
Click to collapse
Even with adaptive brightness off?

And risk screen burn in??? No thanks!!!
Sent from my SM-G920T using Tapatalk

Chilidog said:
Even with adaptive brightness off?
Click to expand...
Click to collapse
Yep.. It's nothing like the note 5 in sunlight

Yes please, even my old S5 is easier to see in direct sunlight.

Yeah it's not great at all in direct sunlight

Wow even if adaptive display on I do not have problems with the screen brightness in sunlight. Maybe I just don't use my phone is direct sunlight as often as I think but I never have to turn my brightness above 50%. I find 100% with adaptive brightness off to be way too bright.
I would not risk any mod to increase brightness it will probably destroy your screen.

I hope this will help ! https://m.reddit.com/r/Android/comments/3xexxo/nexus_6p_high_brightness_mode/

Hello everyone, please take a look at the Original Development thread. From the top of my head, Franco and ElementalX kernels have this capability, it works wonders in direct sunlight.

redsmith said:
Hello everyone, please take a look at the Original Development thread. From the top of my head, Franco and ElementalX kernels have this capability, it works wonders in direct sunlight.
Click to expand...
Click to collapse
Confirming, kernels include this capability, as well as the ability to overclock or underclock other system specs (not required, but possible). Speaking for high brightness mode on Franco Kernel using Franco Kernel Updater, it's maybe 15% brighter. Noticeable, but not dramatic. With this combination (FK + FKU), you can't simply increase the maximum value of the brightness slider. Instead you can either turn it all the way on or off manually from within the app, or have it automated (you can't adjust the settings, e.g. how bright, what threshold it triggers at, and it's still all the way on or off with the automatic setting).
Can't speak for elementalx, but I hope someone delivers a more elegant solution. EDIT: having just watched a video about elementalx, turns out that kernel allows you to automate the trigger with tasker. Again, it's still either all the way on or all the way off. Judging by the video the brightness didn't appear to differ from franko kernel's high brightness mode.

It's the same on all kernels. I brought the feature to this device and also created a handy widget( check my sig). The beta version of the widget has an auto mode