Related
Hi All.
I have wondered why the software that controls the backlight, with the light sensor, doesn’t adjust the backlight to the lowest setting, when the phone is in total darkness.
I use my phone in complete darkness almost every night, but I think the backlight is way to bright. I know I can adjust it manual, but why not automatic?
Do any of you bright heads, know a reg value to change or another solution, so I can "allow" the backlight to go to the lowest setting, automatically?
I find this anoying also. Any help would be great.
Anyone? I have looked in the registry but cant find anything... :-/
as far as i know there is no software\tweak that can change backlite to min
Same here. In my case, I'd like the backlight to be a bit brighter in brighter conditions, especially when in the car on a sunny day and I'm using iGo. Manually, I can set the backlight higher. I had a sony ericsson phone with a similar light sensor, but you could adjust its maximum threshold and the general brightness. Surely there's a software solution here somewhere!
I searched a little and quickly found some things:
1. The Diamond seems to have an in-built process to adjust brightness according to light sensor. Don't know if it works, though.
2. The registry keys are found at "HKEY_CURRENT_USER\BackLight\". You can modify brightness there, and it will affect the control panel BUT not change your current brightness. There is an Event you must trigger to update brightness. In many devices, this is the BacklightChangeEvent, in some others, this is SDKBacklightChangeEvent, and some others something different. Depends on the device and the manufacturer.
I wrote an app to change the registry value and trigger both SDKBacklightChangeEvent and BacklightChangeEvent. I can see on the control panel the value has changed, but the visible Brightness won't change. Seems HTC decided to make their own DLL to manage that, instead of standard windows mobile events.
So, I searched a bit further and I found that into "HKEY_LOCAL_MACHINE\Drivers\BuiltIn" there is a key called "Frontlight" which is apparently defining a value which points to Backlight.dll. This must be HTC's implementation of the Backlight manager. I was like "yay this will be my first windows mobile dll reverse engineering" BUT, I didn't find this file anywhere on the device, unfortunately.
If anyone could find it on the Diamond, please pass me the info !
Scotchy49 said:
I searched a little and quickly found some things:
1. The Diamond seems to have an in-built process to adjust brightness according to light sensor. Don't know if it works, though.
2. The registry keys are found at "HKEY_CURRENT_USER\BackLight\". You can modify brightness there, and it will affect the control panel BUT not change your current brightness. There is an Event you must trigger to update brightness. In many devices, this is the BacklightChangeEvent, in some others, this is SDKBacklightChangeEvent, and some others something different. Depends on the device and the manufacturer.
I wrote an app to change the registry value and trigger both SDKBacklightChangeEvent and BacklightChangeEvent. I can see on the control panel the value has changed, but the visible Brightness won't change. Seems HTC decided to make their own DLL to manage that, instead of standard windows mobile events.
So, I searched a bit further and I found that into "HKEY_LOCAL_MACHINE\Drivers\BuiltIn" there is a key called "Frontlight" which is apparently defining a value which points to Backlight.dll. This must be HTC's implementation of the Backlight manager. I was like "yay this will be my first windows mobile dll reverse engineering" BUT, I didn't find this file anywhere on the device, unfortunately.
If anyone could find it on the Diamond, please pass me the info !
Click to expand...
Click to collapse
Thank you. Its a lot of attention you have given this topic. For that I thank you. - Just too bad you cant find that dll. :-/ Hope some other helps.
backlight.dll found in Windows folder
axelpix said:
backlight.dll found in Windows folder
Click to expand...
Click to collapse
Thanks, for reference, there are the functions:
Code:
BKL_Close
BKL_Deinit
BKL_Init
BKL_IOControl
BKL_Open
BKL_PowerDown
BKL_PowerUp
BKL_Read
BKL_Seek
BKL_Write
inside the Backlight.dll
This has to be a lot easier.
I found some reg settings in HKCU\ControlPanel\BackLight, one of them called "AutoBklOffset". Actually this is exactly what we're searching for here: When I enter a value >0 here, the backlight instantly goes brighter, and the automatic backlight setting is still active and works.
so, what we have to do is figure out how to enter a negative value here.
Ideas?
Hmm, I don't think we can get anything only with the registry, but we don't lose anything to try, do we ?
I'll check again the registry.
Ok. Actually AutoBklOffset is linked to "Auto backlight adjust". This means that if auto backlight adjust isn't ativated, AutoBklOffset won't do anything.
Ok, all this search was fun. But I told myself: what if I just go ahead and try if the already built-in app works ?
And yea, it already works. Meaning if you put the device in front of the sun, it will go bright, and dim if you're in a dark place.
So I guess this is a configuration specific issue and don't need a new app. I'm out of tha place !
P.S.: It would have been actually quite stupid to include a Light sensor but not using it.
Scotchy49 said:
Ok, all this search was fun. But I told myself: what if I just go ahead and try if the already built-in app works ?
And yea, it already works. Meaning if you put the device in front of the sun, it will go bright, and dim if you're in a dark place.
So I guess this is a configuration specific issue and don't need a new app. I'm out of tha place !
P.S.: It would have been actually quite stupid to include a Light sensor but not using it.
Click to expand...
Click to collapse
my works fine
u can test it on bright light...u will see the change when u cover uper part oh the phone....it will dimm and u will se almost nothing...
microlomaniac said:
This has to be a lot easier.
I found some reg settings in HKCU\ControlPanel\BackLight, one of them called "AutoBklOffset". Actually this is exactly what we're searching for here: When I enter a value >0 here, the backlight instantly goes brighter, and the automatic backlight setting is still active and works.
so, what we have to do is figure out how to enter a negative value here.
Ideas?
Click to expand...
Click to collapse
This tweak still dosnt make the phone use the whole scale. From dimmest to brightest. :-/
Scotchy49 said:
Ok, all this search was fun. But I told myself: what if I just go ahead and try if the already built-in app works ?
And yea, it already works. Meaning if you put the device in front of the sun, it will go bright, and dim if you're in a dark place.
So I guess this is a configuration specific issue and don't need a new app. I'm out of tha place !
P.S.: It would have been actually quite stupid to include a Light sensor but not using it.
Click to expand...
Click to collapse
You misunderstand the issue.
With the backlight set to auto try using your phone in a completely dark room - the light sensor will detect this and the phone dims. Okay, now remove the auto setting and you will find that you can make the phone even dimmer than this using the slider. The lowest auto setting is equivalent to level 3 on the manual scale - what the guys here want to do is make this equal to level 1, or lower (or in the case of one poster make the maximum auto setting equal to the maximum manual setting, or perhaps even higher if possible).
The issue is therefore not whether or not the light sensor works (it does), or whether the phone can automatically dim/brighten the display in response to the ambient light level (it can), but whether it is possible to make the full scale range in automatic mode equal to that which the device offers in manual mode.
Mathew
Spot on!
Hi friends.
I have the problem using TomTom at car. When Diamond receive direct sun light it increases backlight until 70%, but not 100%; when I drive at night Diamond decreases backlight until 30%.
I would like adjust some values to 100% and 10% but I have no idea about registry or dlls.
aidrabmol said:
When Diamond receive direct sun light it increases backlight until 70%, but not 100%; when I drive at night Diamond decreases backlight until 30%.
I would like adjust some values to 100% and 10% but I have no idea about registry or dlls.
Click to expand...
Click to collapse
Nice summary
This exactly was the original topic of this thread.
Scotchy49 said:
Ok, all this search was fun. But I told myself: what if I just go ahead and try if the already built-in app works ?
And yea, it already works. Meaning if you put the device in front of the sun, it will go bright, and dim if you're in a dark place.
So I guess this is a configuration specific issue and don't need a new app. I'm out of tha place !
P.S.: It would have been actually quite stupid to include a Light sensor but not using it.
Click to expand...
Click to collapse
Did you come any further with the app?
I too would like to see a solution for the narrow range of light sensor adjustment. The screen stays too bright when ambient is dark.
In my Sprint CDMA Diamond, I see these registry entries:
HKEY_CURRENT_USER\ControlPanel\BackLight
LSensorReduceBKLDelay
LSensorAvegQuene
I wonder what they do. There must be some way to change the range of adjustment or the bias of the light sensor.
First off, I apologize to anyone who looks at this thread thinking that I am posting another screen brightness program. On the contrary I am LOOKING for a program that will allow us to control the brightness level of the phone in small increments.
Before the Fuze I had the HTC Touch which on the homescreen had the option of pressing the brightness shortcut and it would jump the brightness up a notch and then reset down to the lowest value once it got to the highest. Anyone that had this phone or a similar HTC phone that ran..... HTC Home knows what I am talking about.
While using the fuze I have always wondered why I couldn't find anything like this for newer phones. Searching for the longest times on a number of different forums left me with nothing. The automatic screen brightness control of the touch pro is less then desirable. There's times when my phones plugged in but I'm reading news in bed and I want to be able to have the brightness set to low without having to go through the settings and bugger around with it all.
That said, does anyone know of something that will do this? Or is it possible for one of the awesome program developers here to create something like this?
Here's a screen shot just for referance. By pressing the lightbulb it would change the screen brightness of the phone.
Here's the app you're looking for:
http://forum.xda-developers.com/showthread.php?t=485141
BTW, when you post an app request add "[REQ]" in topic...
you Might also want to try Lumos: http://forum.xda-developers.com/showthread.php?t=450318&highlight=lumos
this automatically adjusts your backlight depending on your light meter. It has a very quick and easy setup wizard and works wonders on your battery as well!
warri said:
you Might also want to try Lumos: http://forum.xda-developers.com/showthread.php?t=450318&highlight=lumos
this automatically adjusts your backlight depending on your light meter. It has a very quick and easy setup wizard and works wonders on your battery as well!
Click to expand...
Click to collapse
I have that installed.. does a good job but I'd still like the option of just being able to manually change it as well. Thanks!
the_ozyrys said:
Here's the app you're looking for:
http://forum.xda-developers.com/showthread.php?t=485141
BTW, when you post an app request add "[REQ]" in topic...
Click to expand...
Click to collapse
Thanks for the link and I've changed the subject title. I can't believe I didnt put that in there... That's a Newb mistake
edit Mylight. my lord I remember seeing this post AGES ago when all it was was a graphic "idea" and didnt actually do anything. Glad it got off the ground!
I'm not sure if this has been brought up before, but I wouldn't be surprised if it was missed. I am the type of user who likes to use the phone at full brightness, as it does not seem to have a huge negative impact on my battery life in day to day operations.
I was looking carefully at the browser on the Galaxy and wondered why the whites looked so dimmed in comparison to other parts of the operating system.
I had already done the following:
1. Turned the OS brightness all the way up.
2. Turned browser brightness all the way up.
3. Disabled the screen power saving mode.
I then downloaded a flashlight application and maxed it to 100% while switching to the browser with the Home key multitask, and going back and forward between the flashlight app and the browser app, it is very clear that the browser is not pushing max brightness. Even though the brightness settings on both the OS and the browser are maxed, it seems as though the browser is capped to 80% brightness or so.
My friend also verified this during his test run, as he has just bought the Samsung Vibrant and noticed the same thing. I understand many will just leave the auto-brightness setting on, but that's not really addressing the issue here.
Is there a way for an XDA developer to correct this issue through a patch or ROM?
thanks
I checked with the shell and when brightness is at 100% it has an absolute value of 255, the same when I'm at the browser set with full brightness, so it seems it's working as it should.
You can check it with this command
Code:
cat /sys/devices/platform/s3cfb/spi_gpio.3/spi3.0/blacklight/s5p_bl/actual_brightness
darksnarfer said:
I checked with the shell and when brightness is at 100% it has an absolute value of 255, the same when I'm at the browser set with full brightness, so it seems it's working as it should.
You can check it with this command
Code:
cat /sys/devices/platform/s3cfb/spi_gpio.3/spi3.0/blacklight/s5p_bl/actual_brightness
Click to expand...
Click to collapse
I don't know, I experience the same thing as the OP. Everything's bright, except when surfing the web.
Same issue here. I use Opera in bright daylight.
Sent from my GT-I9000 using XDA App
If you go in to the brightness settings there is an option at the very bottom called "Power saving mode". I'm not sure if that is having any effect on the browser.
Thanks for the numbers, but I gotta say, just comparing the flashlight app and hitting the back arrow to toggle to the browser, it is beyond obvious that the browser is not as bright as the flashlight application. I used google with it's white background and zoomed in to an area that was just white to avoid other distractions.
This is the best way to test since there will be no transition in between the application toggle and you see the screen dim easily.
As indicated by my original post, I have also turned off the power saving feature so that is not a concern. Someone did say that the Behold 2 has the same cap for their browser and that this is a samsung specific setting that's probably there to save battery. I haven't been able to confirm it on that phone yet but just give the flashlight test a chance and you'll see.
oh one last thing i noticed is, when going from the browser back to the flashlight, sometimes the flashlight app is also dimmed at the same level brightness as the browser, but tapping the screen 'wakes' up the app into full brightness.
TGalaxy browser brightness
To me it's very obvious that the browser is dimmed down, I'd say more than to 80%... Having google as the default homepage couldn't make it more obvious when opening the browser! Samsung obviously thought that no one with a decent eyesight will buy their phone. Or anyone who feels capable of managing their phone's battery life themselves.
It's just one of those niggling things that had to be included, lessening the experience of an otherwise rather breathtaking phone. Another one is the compulsory vibration when charging is finished - makes me wonder when others, or the developers for that matter, charge their smartphones! I charge them overnight, and of course every night... or at least used to, as with the Galaxy S, I can no longer sleep.
I think I've been through every menu possible to change these couple of features, with no success... if anyone knows anything, please share.
It happens on the dim-side, too
I have the same problem, but on the dim side. The browser brightens the screen when it comes on if you have the brightness set to zero. I like it dimmed all the way at night if I'm reading in bed when the lights are out and my partner is asleep, but it keeps turning it up so it's pretty bright in the pitch dark. Arrgh. It's my phone, can't I set it the way I want? Grr.
I've read that there are limitations on how much the screen dims and brightens unless you have a rooted phone and you use an app that's not built into the OS.
I rooted mine and there are some configuration apps that will set it to 0, but I think the built-in operating system slider doesn't go all the way to zero and might not go all the way to 255 when you slide it to the very edges. Supposedly it only goes to 10 on the low side from the notes on some apps.
So, probably it's a similar limitation on the slider for the screen brightness in the browser. We're probably stuck with this problem until someone writes an app that lets you change this setting to any value between 0 and 255 since the default sliders don't allow the low side and I'm guessing not the high side either.
So . . . any android developers out there, it would be cool if you could make an app to change this setting if it's available programatically somewhere.
I tried the "Dimmer" and "Brightness!" apps from the market. But none of them 'Keep' the brightness at the minimum always.
Hey guys, as you all know, there usually is no way, of how to control led brightness and duration in a stock ROM, except for Zeus ROM. Now I just found a way, of how it probably could be controlled, but I dont know, how to set it correctly... Just open the hidden menu (3845#*970#), then go to device test, scroll all the way down, to LED current control and there you can set different things, but I dont know, how to set it correctly... can anyone explain the settings maybe or even build an easy to use app, which would allow all of the stock users, to control the LED brightness and maybe even the brightness of the LEDs.
And I also discovered, that with some random settings i chose, my softkeys all are illuminated blue, which I like very much, maybe also a feature, that is settable somehow... Would be really cool, if we could use this somehow. There also are some paths, that show, which file is being used, but it doesnt tell me anything, so maybe someone here can take benefit of it I hope so
I would love yo have them all blue
hmm, I don't get the point. when you control screen brightness, it's leds brightness logically... I mean, it's global. decreasing brightness decreases luminosity of leds light. backlight is about zones or areas.
My point is, I first of all want full control over the Softkeys. I want to be able to set color, duration or permantent light and also the brightness of the softkeys. I for example would like to have them blue at full brightness and permanently illuminated, since I hate it if they go out completely and I miss the right button... I know, it's not that much of a deal, but dont you think as well, that it would be cool, to be able to control it? It's not about the screen brightness, but only about the softkeys. Get what I mean and want?
okay I see. there is the notification app already which control a part of softkeys. maybe you could understand how to control them if you're able to decompile the app to see the source code ?
So I can select "auto" brightness by the slider on the notification panel. When I move the slider, auto is unchecked. BUT, I know since I've had the S5 over the past few weeks, I've had the slider show a +/- option that allowed auto to remained checked while you could move the slider between like +3 and -3 for the relative level of auto you want.
I know this type of option can be achieved through various 3rd party apps, but is there any way to enable it from stock? I'm just confused because I know I've had this option, but I haven't used any type of brightness app, and now the option is gone. I did have wanam Xposed installed before...does that add the option?
Hmm, looks like this is an option in wanam Xposed and probably a default option so I was seeing it when I had that installed... Wanam says:
Use Auto-Brightness Detail*- Enables a +/- 5 slider for auto-brightness
was the auto brightness fine adjustment ever working for you? i havw wanam on my s4 and my s5, auto brightness adjustment doesn't work on either. maybe im doing something wrong
I believe it was working when I had wanam installed, but I honestly didn't really test it out...and I took off Xposed framework for the time being.
netter123 said:
I believe it was working when I had wanam installed, but I honestly didn't really test it out...and I took off Xposed framework for the time being.
Click to expand...
Click to collapse
man. i really wish i knew why mine doesnt work on 2 different devices. i spent hours searching and reading forum posts and found no answers. i know it works on TW because i had some TW rom that had it and it worked great, but i ditched the rom casue there were things it was missing and some things i didnt like.
I did see that Lux Auto Brightness and Velix Auto Brightness might provide good 3rd party solutions to better personalized brightness control fwiw.
Ive tried lux and some others. They either worked great and killed my battery. Or didnt work woth. ****
Good to know those are battery killers, I hadn't tried them our yet myself.
Lux user here, paying user actually, works great for me, no significant drop in battery unless im in an area where the screen is staying super bright.
Sent from my SM-G900A using Tapatalk
Good to know this as well, was thinking of trying lux or velix one of these days. Have you tried velix?
netter123 said:
Good to know this as well, was thinking of trying lux or velix one of these days. Have you tried velix?
Click to expand...
Click to collapse
Ive tried lux and twilight, i used twilight for a while cause i wanted somethjng like redshift/f.lux, but i found lux which had auto brightness and screen temp adjustment so i stu k with that. You could also try cf.lumen, personally i havent even heard of velix though.
Sent from my SM-G900A using Tapatalk