Develop Bugs

[Q] Display brightness

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.

Too bright after Nougat update?

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.

Android 9.0 display problem

A lot of people are experiencing this problem - the screen after the update is dim. Before Android 9.0, I was using my phone with the brightness set somewhere from 25% to 40%. With the Pie update the brightness is all the way up at 100% and it doesn't even come close as what it was on android 8.1.
I also think that they didn't just changed the way the values are displayed from the slider as it is mentioned in the official statement. The max brightness on android pie is not the same as the max brightness on android 8.1.
So my question is the any possible way to fix this issue? There is no official way to downgrade to android 8.1. I have already try out everything turning on and off different toggles and setting.
My phone is xiaomi a2 lite global

turn off auto brightness

merlin.berlin said:
turn off auto brightness
Click to expand...
Click to collapse
I did. Also i turned off the smart battery feature that was introduced with android 9. Nothing changed. Is there any third party application that could resolve this issue?

I read somewhere else that the new automatic brightness in Pie requires some training from the user, to learn its habits. You have to manually adapt the brightness for two or three days, after that the phone will learn your preferences and it should work much better.

katoda_ltd said:
I read somewhere else that the new automatic brightness in Pie requires some training from the user, to learn its habits. You have to manually adapt the brightness for two or three days, after that the phone will learn your preferences and it should work much better.
Click to expand...
Click to collapse
Exactly. It needs to learn your preferences. Which it does fairly well.

It is off
Jimmiatus007 said:
Exactly. It needs to learn your preferences. Which it does fairly well.
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Click to collapse
2 weeks passed, I tried on and offno difference with Android 8.1 the display was amazing,now is dim and dark, cant read nothibg especially in sun light

azsamwe said:
2 weeks passed, I tried on and offno difference with Android 8.1 the display was amazing,now is dim and dark, cant read nothibg especially in sun light
Click to expand...
Click to collapse
What do you mean by on/off. You have to keep Adaptive brightness on...

How can i disable Machine Learning on Screen Brightness?

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.

Question Green tint on screen

Hi.
I recently bought a F3, and I'm trying find if the green tint is a common issue or I have bad luck.
To check it:
-select in color scheme->advanced->enhanced.
-turn the brightness very low, and turn on dark mode.
-go to the phone app, or one with a solid gray color.

Not for me, sorry

have the same,this oled screen is not good

Half of users have the same issue. I think you already duplicated the thread on xda.
On Telegram we are talking about this. I got this issue too. This is going to be fixed at least partially in future update (see telegram for F3 and there look for media to see image upload history of all users).

osemoka said:
Half of users have the same issue. I think you already duplicated the thread on xda.
On Telegram we are talking about this. I got this issue too. This is going to be fixed at least partially in future update (see telegram for F3 and there look for media to see image upload history of all users).
Click to expand...
Click to collapse
This CAN'T be fixed via updates because is a hardware issue, they are gonna restrinct or change the color profile and thats all.

Got the same problem on my device. However, i noticed a big improvement right after a reboot. So maybe they could improve it a bit through updates...
Still the panel is by far worse than the one of my Mi11.

TheKelvin273​Do you have F3 ? You seem like you don't want to believe it can be fixed. Latest update on the matter from some user on telegram ( redmi means redmi k40 aka poco f3).
Even if it's hardware the software operates on it....
Even if they downclocked the SP870 a bit for normal use to achieve this goal I wouldn't mind.
If they won't fix it at all in few months I will consider selling (not replacing) this phone, cause I will sell it at more price I aquired it.

osemoka said:
Half of users have the same issue. I think you already duplicated the thread on xda.
On Telegram we are talking about this. I got this issue too. This is going to be fixed at least partially in future update (see telegram for F3 and there look for media to see image upload history of all users).
Click to expand...
Click to collapse
Maybe a stupid question but how can I get to the telegram channel?

edge bleeding at low brightness
Hello, tonight i was configuring my youtube app and i noticed very bad colors at the edge of the display, when the background is grey. I was in a complete dark room, the problem is most noticable when brightness is about 15%. And no, its not only...
forum.xda-developers.com
See my reply there. To my eye it's not really green but the camera disagrees...

PatricB said:
Maybe a stupid question but how can I get to the telegram channel?
Click to expand...
Click to collapse
Open telegram, use search to find POCO 3 Official, join . You will need to give your number to enter the application

osemoka said:
Open telegram, use search to find POCO 3 Official, join . You will need to give your number to enter the application
Click to expand...
Click to collapse
Great thanks!

not on my phone

For a 300e phone I dont care.They can just change gray to black and problem is gone and looks better to.Xs max had a same issue but was worse than poco.Black looks better, save power and doesn't have this problem.

Gray to black totally ? do you know what ure saying ?

Mine is ok too...no green tint

Green tint is a hardware issue.

Sadly I can also see this issue on my less than a week old F3. Thankfully I've located this thread, showed it to the seller and I am now asking for a replacement, hopefully they'll cooperate. The issue was also confirmed by the service center here in the Philippines.

It's common issue and happens almost to every OLED-y screen. See my post https://forum.xda-developers.com/t/screen-shows-a-greenish-tint.4251845/post-84814357
tl;dr - keep the screen bright enough so each pixel is pumped adequate electricity by the phone.

Just as an update: Today i tried HentaiOS and i have to say that using the same settings as MIUI (low brighness 1%-10%, dark mode , 120 HZ , reading mode on/off, and chrome grey background) there is no green tint anymore.On MIUI i had some visible but on HentaiOS screen color is the same on all surface.So it is something regarding the software calibration and not hardware issue.Hope they will fix it.

I upgraded from Galaxy Note 8 to Poco F3. All I have to say about the screen is the F3's screen is beyond awful. The only problem is not that the screen is green, unfortunately it is behind in many aspects.