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[Q] Automatic brightness not working after installing CM11

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trax72
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Question [Q] Automatic brightness not working after installing CM11

Hi,

After I installed KitKat with Cyanogenmod 11 on my Samsung S3 Mini the Automatic Brightness function stopped working.

I read all the posts regarding light sensor on this issue (for S3 Mini) and found opinions vary between "no light sensor at all", "light sensor combined with proximity sensor", "light sensor exists but obscured by hardware", "light sensor disabled in kernel"...

My questions:

Did anyone manage to activate the light sensor on CM11? Is there some change I can do in the kernel to activate it?

I also tried to test for the light sensor with *#7353#, but all I get is a message saying "MMI complete" but it didn't work. Does that work only on the custom ROM? Is there a way to do this test on CM11 ROM?

If there is no light sensor then how did the Automatic Brightness function work on the custom ROM? (and I think I remember noticing the brightness changing automatically at different light levels, but I'm not 100% sure).

Many thanks!
 
soralz
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SIII mini doesn't have a light sensor so obviously it's not working. That's all.
Primary Gadget:
OnePlus One A0001 16GB White | Cyanogenmod 11 Nightly 4.4.4 ROM | PhilZ Touch Recovery 6 (CWM 6.0.4.9 Based)



Secondary Gadget:
Samsung Galaxy W Wonder GT-I8150 White | Cyanogenmod 11 Unofficial 4.4.4 ROM by arco68 | PhilZ Touch Recovery 6 (CWM 6.0.4.5 Based)
 
trax72
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Originally Posted by soralz View Post
SIII mini doesn't have a light sensor so obviously it's not working. That's all.
If that's true, then how come automatic brightness was working with the stock ROM?

Is it possible that the stock ROM was using the camera for it?

(I wrote before: "If there is no light sensor then how did the Automatic Brightness function work on the custom ROM? (and I think I remember noticing the brightness changing automatically at different light levels, but I'm not 100% sure)." I meant STOCK ROM not custom ROM).
 
soralz
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Originally Posted by trax72 View Post
If that's true, then how come automatic brightness was working with the stock ROM?

Is it possible that the stock ROM was using the camera for it?

(I wrote before: "If there is no light sensor then how did the Automatic Brightness function work on the custom ROM? (and I think I remember noticing the brightness changing automatically at different light levels, but I'm not 100% sure)." I meant STOCK ROM not custom ROM).
Huh? Previously my SIII Mini I8190N doesn't have such automatic brightness selection on stock 4.1.2. Probably you have installed a mod and let the camera determine the lightning conditions?
Primary Gadget:
OnePlus One A0001 16GB White | Cyanogenmod 11 Nightly 4.4.4 ROM | PhilZ Touch Recovery 6 (CWM 6.0.4.9 Based)



Secondary Gadget:
Samsung Galaxy W Wonder GT-I8150 White | Cyanogenmod 11 Unofficial 4.4.4 ROM by arco68 | PhilZ Touch Recovery 6 (CWM 6.0.4.5 Based)
 
ffoucault
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I can confirm, as far as I know, that there is no ambient light sensor on S3 mini, so the automatic brightness on custom rom doesn't work on our device.
Install Lux app which uses the front camera to estimate incoming light to auto adjust screen brightness.
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trax72
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(Last edited by trax72; 24th August 2014 at 01:05 PM.)
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Originally Posted by ffoucault View Post
I can confirm, as far as I know, that there is no ambient light sensor on S3 mini, so the automatic brightness on custom rom doesn't work on our device.
Install Lux app which uses the front camera to estimate incoming light to auto adjust screen brightness.
I'm 100% sure I was able to select automatic brightness on the stock ROM. Maybe it didn't actually do anything, but it was possible to enable it...

Anyway, obviously changing the brightness level manually would be less battery-consuming, but assuming that I'm lazy and will keep it on relatively high settings, would I be saving battery life if I use the front camera for it, or would using it will actually consume more than I'm saving?

Cheers!
 
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Originally Posted by trax72 View Post
I'm 100% sure I was able to select automatic brightness on the stock ROM. Maybe it didn't actually do anything, but it was there...

Anyway, obviously changing the brightness level manually would be less battery-consuming, but assuming that I'm lazy and will keep it on relatively high settings, would I be saving battery life if I use the front camera for it, or would using it will actually consume more than I'm saving?

Cheers!
Lux can be triggered only when you wake up the phone so it can adjust the brightness. Usually my screen don't go beyond 20-40% when i'm indoor, In my opinion you'll drain your battery way faster with your display set to a fixed high setting.
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MounirHero
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@solution
You can easily try with Lux Auto Brightness an app witch uses the camera instead of light sensors it changes the brightness every time screen turns on
If I helped you, please press THANK button
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trax72
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Originally Posted by ffoucault View Post
Lux can be triggered only when you wake up the phone so it can adjust the brightness. Usually my screen don't go beyond 20-40% when i'm indoor, In my opinion you'll drain your battery way faster with your display set to a fixed high setting.
Alright, I'll try it out

Cheers!
 
trax72
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Originally Posted by soralz View Post
Huh? Previously my SIII Mini I8190N doesn't have such automatic brightness selection on stock 4.1.2. Probably you have installed a mod and let the camera determine the lightning conditions?
Most definitely not.

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