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So as everyone knows our brilliant screen and auto brightness eat batteries like candy. Many people, understandably, disable auto brightness to conserve battery life. I haven't gone that far yet as I do use my phone in many different environments and enjoy the dynamic brightness. With that said auto brightness does set the brightness unnecessarily high.
Would it be possible to adjust auto brightness so that it still functions but sets brightness 10-20% (or a user specified value) lower than normally?
I'm not sure this would save as much battery as statically setting the brightness (is it the "auto" adjustment that drains battery or the brightness it sets it at?) but I'm sure it would be better than stock auto brightness.
You cannot do this from stock rom to my knowledge, but I'm sure there is a custom rom that will allow you to do this. You might have to search around a bit though.
I wrote an app that allows you to set custom auto brightness behaviour. You can check out the free version here.
Cyb3rGlitch said:
I wrote an app that allows you to set custom auto brightness behaviour. You can check out the free version here.
Click to expand...
Click to collapse
Cool, question: will this actually reduce battery usage or possibly cause more by enabling so many extra features?
If you're willing to rebuild android from source you could try changing device/samsung/tuna/overlay/frameworks/base/core/res/res/values/config.xml to have a more subtle brightness adjustment.
Or maybe running yet another app is easier in the meantime... But maybe someone who builds custom roms might want to hack at it...
The juice defender app has a schedule for brightness i believe, So it will come on automatic during the times frames you set..good luck
textshell said:
If you're willing to rebuild android from source you could try changing device/samsung/tuna/overlay/frameworks/base/core/res/res/values/config.xml to have a more subtle brightness adjustment.
Or maybe running yet another app is easier in the meantime... But maybe someone who builds custom roms might want to hack at it...
Click to expand...
Click to collapse
Ah thanks that's what I was looking for. You can't mod this file directly without rebuilding from source? Would be cool to be able to apply this to any ROM.
Sent from my Galaxy Nexus using XDA App
wish777 said:
The juice defender app has a schedule for brightness i believe, So it will come on automatic during the times frames you set..good luck
Click to expand...
Click to collapse
Thanks, not exactly what I was looking for though. It has to be more dynamic than a hard schedule.
Sent from my Galaxy Nexus using XDA App
Editing default auto brightness levels was a Cyanogen 7 feature. If it hasn't yet been added into CM9, it'll eventually get there.
Sent from my Galaxy Nexus using Tapatalk
phishie said:
Ah thanks that's what I was looking for. You can't mod this file directly without rebuilding from source? Would be cool to be able to apply this to any ROM.
Click to expand...
Click to collapse
Seems this thread has figured out a lot more about this http://forum.xda-developers.com/showthread.php?t=1377410
I don't know how easy it is to patch the existing apk. Seems possible.
Cyb3rGlitch said:
I wrote an app that allows you to set custom auto brightness behaviour. You can check out the free version here.
Click to expand...
Click to collapse
Sounds good, unfortunately useless in free version and I have no card to buy payed one
pesho00 said:
Sounds good, unfortunately useless in free version and I have no card to buy payed one
Click to expand...
Click to collapse
Why is it useless? I have been playing with it since yesterday and really like it, much better than system auto brightness. I don't really feel it's missing anything it the free version though I'm pretty sure I'll buy it just to support the developer. Very nice app.
pascanu said:
Why is it useless? I have been playing with it since yesterday and really like it, much better than system auto brightness. I don't really feel it's missing anything it the free version though I'm pretty sure I'll buy it just to support the developer. Very nice app.
Click to expand...
Click to collapse
Same here, it is a very nice app! I love how I can customize the brightness to match my environment and needs.
In my case, I selected "auto brightness inly on wake" in Lux Auto Brightness and it is draining battery. I paid for it but I am going to uninstall it.
Please Vito, let us know how to improve battery with Lux configurations. Thaks
While I can't provide any input on Lux, I also wrote an custom auto brightness application which can be found on Market here.
The market version isn't really good on Gnex though, you may just contact me and I'll send you the last dev version, it is now alright. I myself have a GNex and now it's alright. It would take me about 2 weeks till I'll be able to update Market version, most likely - there are enough things to add.
xperia z1 compact brightness change itslef even when i have turned off the auto brightness. for example, the brightness becomes dimmer when the overall display colour is dark or black colour and it becomes brighter when the ovrall display colour is white or bright colour. i mean im able to notice there is a slight change in display brightness when im viewing photo, watching videos or surfing inernet. the brightness just change itself even when i turn off the auto brightness. so is there any solution or is there anyone has same curcamstances?
CABL
Sent from the app on my Z1C...
if you're rooted you can disable it by changing the build.prop ro.qualcomm.cabl=1 to ro.qualcomm.cabl=0
Riyal said:
if you're rooted you can disable it by changing the build.prop ro.qualcomm.cabl=1 to ro.qualcomm.cabl=0
Click to expand...
Click to collapse
I tried that, but the effect still appears. Any idea?
I've noticed the same issue, especially when browsing using Dolphin
Two ideas (which both may be totally wrong).
Does the phenomenon occur anywhere or only in certain apps? Some apps just ignore certain system settings and mess with the phone how they want or how is defined within the respective app settings (like switching to auto-brightness even when it is turned off in the android system settings). There seem to be some very basic points missing in the holy whatever-app-coding-styleguide for android: Options shall always be OPTIONAL and, in case of doubt (which is always), don't fcuk with stick to the system defaults ... but I'm running off the track here.
With auto-brightness turned-on, there may be some slight loop-back kind of behaviour in that a brighter screen also creates a brighter environment for the light sensor, thus, making the device turning up brightness even more. Things like that happen in control/measurement systems all the time (well, not really all the time, but they do happen). I've never seen it on my phone, though. So, this is a very very hypothetical hypothesis if I may say so.
Hi
I set ro.qualcomm.cabl to zero, and for me the irritating behavior went away., and unfortunately the irritating behavior is still there.
Thanks for the info!
//Gunnar
GunnarKarlsson said:
Hi
I set ro.qualcom.cabl to zero, and for me the irritating behavior went away.
Thanks for the info!
//Gunnar
Click to expand...
Click to collapse
Just one qustion:
I assume i have to be rooted to set this value, correct?
Thanks in advance
Zweistein82 said:
Just one qustion:
I assume i have to be rooted to set this value, correct?
Thanks in advance
Click to expand...
Click to collapse
Correct!
GunnarKarlsson said:
Hi
I set ro.qualcom.cabl to zero, and for me the irritating behavior went away.
Thanks for the info!
//Gunnar
Click to expand...
Click to collapse
That's strange because it's kernel related so changing the build.prop has no effect as already mentioned, which I can +1 to.
XperienceD said:
That's strange because it's kernel related so changing the build.prop has no effect as already mentioned, which I can +1 to.
Click to expand...
Click to collapse
I'll look again just to make sure, there might have been a placebo effect...
I noticed the behavior in the kindle app. When reading white text on a black background the screen got brighter when there was a white chapter start image.
//Gunnar
XperienceD said:
That's strange because it's kernel related so changing the build.prop has no effect as already mentioned, which I can +1 to.
Click to expand...
Click to collapse
You are right, just placebo on my part, when duplicating the error case I noticed it in, the CABL is still there.
I really really wanted it to work though, that must count for something... :-/
I attach the images I used for comparison...
//Gunnar
GunnarKarlsson said:
I really really wanted it to work though, that must count for something... :-/
Click to expand...
Click to collapse
If only it worked that way lol. It's in the kernel but thus far no dev seems to have looked in to it.
Sent from the app on my Z1C...
XperienceD said:
That's strange because it's kernel related so changing the build.prop has no effect as already mentioned, which I can +1 to.
Click to expand...
Click to collapse
From google I got cabl=content adaptive backlight and it is intended for changing backlight change.. But what is its advantage?? Is it battery saver or battery eater??
Sent from my Xperia Z1 Compact (D5503)
Was searching for a solution to this 'feature', especially on a sunny day it is very annoying. Could it be that is has something to do with the BRAVIA engine? Just a thought..
so?
So this problem is kernel-related issue?
Is there any kernel that have fixed this?
Any soulution? It is super annoying
I have same problem. Any solution?
CM11
Thank you
I know this is for z1c, but I just got my hands on a z1 c6903 and it seems to do this a lot and fade on dark colours. I read that on 4.2.2 there used to be an optimized backlight option and disabling it would stop the screen doing it but it was taken out from kitkat. Does anyone know if any custom kernels would fix it? It's just really annoying.
What about setting:
/sys/devices/mdss_dsi_panel/cabc
to "0"?
Hi,
is there any way to change brightness to lower level? My previous phone, Xperia Mini, could decrease brightness to absolute black (I didn't need it, but still...). But my Xperia M is still pretty shining in dark even in the lowest level. It burns my eyes. All I could find were some stupid filters. Is there any better solution (root or not, I don't care).
Thanks.
dave_lister said:
Hi,
is there any way to change brightness to lower level? My previous phone, Xperia Mini, could decrease brightness to absolute black (I didn't need it, but still...). But my Xperia M is still pretty shining in dark even in the lowest level. It burns my eyes. All I could find were some stupid filters. Is there any better solution (root or not, I don't care).
Thanks.
Click to expand...
Click to collapse
Click
Gravitybox has some brightness abilities to reassign lux-brightness pairs. Don't know if it can go under normal brightness though...
FindYanot: That's exactly what I don't want. I want something on HW level (lower led (or what they use) intensity), not just transparent black layer.
KoenGo: Do you think, it can work? I don't have root yet (I want do it, if I find solution), so I can't try.
Nobody faced this problem? Everyone is happy with light intensity?
Yes it's too much but if you lower that level screen will probably start flickering which is much more annoying than just too bright screen. This is common, hw related issue that can be found on other devices with low quality lcd.
I'm trying but it's kinda hard to tell if there's any difference since you have to reboot after applying new minimum. I would say there isn't much difference. I'll retry in the dark some time.
Doesn't crash or flicker or anything though, so that's the good news
Personally, I would not root just for this and just use the filters. What is your problem with them? That it uses more battery than a hardware method would, or just that it's impractical? In the second case, lux might be worth looking into. I've never tried it myself since it isn't free, I just use the filter u hate
Tried it in the dark and I believe there is a difference, although very small (barely noticeable) and imho definitely not worth rooting and installing framework.
OK. That's bad, but thanks for your time
Well I rooted my phone and I tried gravitybox and I don't think there is a difference. But still thanks.
My setup now is that I can (de)activate the filter app by swiping over the navigationbar. It's still a filter so it doesn't prolong battery life or anything, but it is a convenient way to enable or disable it.
If you would ever come across something better, please let us know
dave_lister said:
is there any way to change brightness to lower level?
Click to expand...
Click to collapse
Yes, but you need root.
Execute in Terminal or run attached file as script via Root Explorer / GScript:
Code:
#!/system/bin/sh
su
echo 5 > /sys/class/leds/wled/brightness
Minimal stock value 27, we change it to 5 or any other you want.
Maximum value: 255
Bug: backlight will be flickering.
Thank you. It really works! (I rewrite it manually without any script or terminal)
Just one thing. The brightness file is used for current state and when I change intensity in options (or select auto), it's rewritten. So, is there any way to change minimum level permanently (minimum on bar or 0 lux = 5 or something instead of stock 27)? Or is it possible to make some shortcut to rewrite the file with one click? Or use some tasker for it?
But it doesn't matter much. Even this way, without any shortcuts, is awesome. I'll test it in night, but even now (during a day), I can see a difference.
dave_lister said:
So, is there any way to change minimum level permanently
Click to expand...
Click to collapse
Yes, but only by editing file in kernel, it requires recompiling.
Then pulled slider to the left will set really minimal value.
Here commit from ElixER kernel for 4.1.2, originally this trick comes from there.
dave_lister said:
Or is it possible to make some shortcut to rewrite the file with one click? Or use some tasker for it?
Click to expand...
Click to collapse
Yes, GScript app, as far I know can create shortcuts.
Or in Tasker create task with only one action "Run shell" (tick Root) and then create shortcut in launcher.
iks8 said:
screen will probably start flickering which is much more annoying than just too bright screen. This is common, hw related issue that can be found on other devices with low quality lcd.
Click to expand...
Click to collapse
Always was interesting what exactly causing this flickering at hardware side. Led's controller?
Please can you provide any information and example devices with same issue?
Bonoboo said:
Always was interesting what exactly causing this flickering at hardware side. Led's controller?
Please can you provide any information and example devices with same issue?
Click to expand...
Click to collapse
For example galaxy tab 2 (I have one), on the lowest brightnes level it flicker a lot (especially annoying when it's displays white surface), my sister's asus memo pad 7 hd has this issue too but less noticible. Yes, it's somehow related to device's power managment, in galaxy tab 2 forum people saies that it's flicers more when wifi signal is low so as I understand: low signal -> device need more power for wifi -> device gives less power for leds -> screen is more flickering but I could be wrong since I'm almost total electroinc noob I will test that later
p.s.
This issue is really common, even s4 has this problem according to this https://www.youtube.com/watch?v=5yZaQRr76f8 So Sony has done good move with setting so high the lowest brightnes level (at least this hides unusable levels). Really my eyes hurt when I'm using my gtab2 at night although xperia does the same thing but in different way xD
Tested your method and at least in my device, the LED flickering was barely noticeable and only appeared when I set very low values (like 1). Setting as 3 and onwards gives zero flickering here (or I'm just blind, not noticing it)...
You're right. Values about 3, 4, 5 are quite ok.
I made the GSscript shortcut and I¨m finally happy.
I think the flickering is caused by pwr regulation with low frequency. But I'm not electrician either.
One of the more pleasant surprises I got when I bought this phone was how dark the screen could get for night tile viewing. With Night Mode and the lowest brightness, I could browse my phone first thing in the morning without dying.
Now, on Nougat, Night Mode just adds a yellowish tint - probably reducing blue light or whatever - and brightness doesn't seem to go as low now. Kinda blinded this morning...
Is there some way of fixing this?
1.
2.
3.
And many more..
I probably should've specified I wasn't looking for a separate app for this purpose. I know that much!
Just wondering if I can get the built in function to be sensible again.
Rizaria said:
I probably should've specified I wasn't looking for a separate app for this purpose. I know that much!
Just wondering if I can get the built in function to be sensible again.
Click to expand...
Click to collapse
Surely.
No you can't.
Well,
Currently looking into downgrading to Marshmallow then. Newer doesn't always equal better, sigh~
MOD EDIT
Rizaria said:
MOD EDIT
Click to expand...
Click to collapse
This is an international FORUM. People are from different cutural backgrounds, ethnicity, religion, beliefes......
What might be acceptable, might not be for others.
Please be careful in your words
Thanks
No idea what I said, but okay.
Hi,
i want to disable Screen Brightness Machine Learning on my phone. It must be like Android 8.1
I mean the only thing Screen care for the Brightness must be Light Sensor. Because ML thing works like ***.
Is there any build.prop code or something like that? How can i do that?
Thanks.
perfect_ said:
Hi,
i want to disable Screen Brightness Machine Learning on my phone. It must be like Android 8.1
I mean the only thing Screen care for the Brightness must be Light Sensor. Because ML thing works like ***.
Is there any build.prop code or something like that? How can i do that?
Thanks.
Click to expand...
Click to collapse
On Adaptive brightness option, turn it off.
RFD80M-75679 said:
On Adaptive brightness option, turn it off.
Click to expand...
Click to collapse
You misunderstood me.
perfect_ said:
Hi,
i want to disable Screen Brightness Machine Learning on my phone. It must be like Android 8.1
Thanks.
Click to expand...
Click to collapse
You can either use the new Screen Brightness or turn if off completely.
Have you tried training it for a few days by adjusting the brightness to your needs?
For me, it works perfectly after the training phase.
There is no way a normal user can do it, on a locked device. I am sure there are ways with root there are ways to fix this. This was my biggest issue for a week when I got Android 9, and now 10 (since in 10 whatever was learned in pie, at least for me, was lost). After a week of teaching it how I want things to do, it just does it at it should.
Howdy2 said:
You can either use the new Screen Brightness or turn if off completely.
Have you tried training it for a few days by adjusting the brightness to your needs?
For me, it works perfectly after the training phase.
Click to expand...
Click to collapse
The point is ML doesnt obey my commands. Thats why i want to disable it.
It learns ok. but when it finishes his learning phase i cant control the Brightness manually.
For example:
ML increases Brightness to %100
but thats too much for me for that moment
so i am trying change it to %50 and then
ML immediatly increases Brightness to %100
I cant control the Brightness after the Learning phase. Its just so dumb.
I just want back my old but gold Light Sensor.
TeoXSD said:
There is no way a normal user can do it, on a locked device. I am sure there are ways with root there are ways to fix this. This was my biggest issue for a week when I got Android 9, and now 10 (since in 10 whatever was learned in pie, at least for me, was lost). After a week of teaching it how I want things to do, it just does it at it should.
Click to expand...
Click to collapse
There must be a way.
perfect_ said:
I cant control the Brightness after the Learning phase. Its just so dumb.
I just want back my old but gold Light Sensor.
Click to expand...
Click to collapse
What. Just adjust the slider dude... been using it since it was new and I can adjust the slider under the quick settings any time.
What do you mean by learning phase? It tells you, that leaning phase is over and it's not adjustable anymore or what? :laugh:
dSERiES said:
What. Just adjust the slider dude... been using it since it was new and I can adjust the slider under the quick settings any time.
What do you mean by learning phase? It tells you, that leaning phase is over and it's not adjustable anymore or what? :laugh:
Click to expand...
Click to collapse
Just watch this.
Stock Android 9 - March 2020 v10.0.20
perfect_ said:
Just watch this.
Stock Android 9 - March 2020 v10.0.20
Click to expand...
Click to collapse
Indeed, you are right, the old fashion system pre-9 was much better, and much more reliable. You set a point on the slider and the auto-brightness only modified slightly in that area. Until the auto-brightness post-9 learns it's a chore, and after that... teaching it new things, it's again a chore.
The whole process is related to the Device Health Services subsystem where you can reset the whole learning to factory default. Maybe from there, you can have some success, but from what I've googled, there is no way to do that on stock locked. Maybe there are xposed, or magisk modules that could take care of that.
perfect_ said:
Just watch this.
Stock Android 9 - March 2020 v10.0.20
Click to expand...
Click to collapse
Wow.. I have never seen that. Been using 9 since it came out, with the latest sec. patch every time. I've adjusted the brightness many times, but I've never seen this happen.
Is it the same if you drag it instead of tapping a new location for the knob?
Also, I have the complete Digital Wellbeing bs disabled for a long time now, maybe that's why I've never seen this? Might have to do something with it.