Problem brightness mate 20 pro - Huawei Mate 20 Pro Questions & Answers

Hi guys, a question: setting the brightness manual, you noticed by chance if entering some Apps like Facebook, Gmail, Chrome etc the same is lowered and then return to the set value when you leave? Thanks to those who will answer.
That is even with the auto brightness ticked-off and smart screen feature also off, the screen will automatically lowered after few seconds I opened the Facebook app, Chrome app for example.

same problem..

This is a serious problem with the software, but a intented one. Really makes me think about whether I keep this phone or not.
This video adresses the problem at minute 3:20.
Also the flickering of the display is a issue for sensitive users. This is the most flickering oled display I've seen so far. Adressed at minute 2:55
I really hope Huawei adresses and fixes this strange programmed behaviour. But I'm afraid they won't, because the Mate 10 Pro and P20 Pro also have this automatic brightness limiting.
https://www.youtube.com/watch?v=gTV2oLF3sTI

vovanhieu2202 said:
Hi guys, a question: setting the brightness manual, you noticed by chance if entering some Apps like Facebook, Gmail, Chrome etc the same is lowered and then return to the set value when you leave? Thanks to those who will answer.
That is even with the auto brightness ticked-off and smart screen feature also off, the screen will automatically lowered after few seconds I opened the Facebook app, Chrome app for example.
Click to expand...
Click to collapse
Check whether the light sensor is working. The screen brightness may not adjust properly if the light sensor is covered by other objects.
Please adjust the screen brightness if you think the screen is too bright or too dark. Go to Settings and select Display > Brightness.
Please check whether the AUTO switch in the Brightness level menu is enabled. If the AUTO switch is not enabled, the screen brightness may fail to adjust automatically. You can go to Settings > Display > Brightness level to enable the AUTO switch

Dude, this is so off topic. Has nothing to do with the sensor. It is software.
Check the internet for Huawei brightness dimming, screen dimming and power genius. You will find many topics which adress this problem. It is a problem in many Huawei phones. Mate 9, Mate 10 Pro, P10, P20 pro, they all suffer from this same problem which the Mate 20 Pro also happens to have unfortunately...

Is there a solution for this problem, I also have the same issue on my Mate 20 PRO. Is any chance to EMUI 9.1 solve this problem ?

Removing powergenie through adb solves this problem

What is the adb?

ttakisss said:
What is the adb?
Click to expand...
Click to collapse
See http://bfy.tw/OIE9

Related

Auto brightness

Does anyone have a solution to auto brightness issue?
Even in the darkest room, the lowest light level is "medium" and not low! Its excellent setting when using phone outdoors but in dark room or at night its just too bright. Is my phone broken or is it general windows phone setting?
Sent from my TITAN X310e using Board Express
on my titan, the auto brightness behaviour is erratic and sometimes goes too low.
the camera is one of the issue triggers. after every return from a photo session, the screen goes to a lower brightness.
also, sometimes it happens when unlocking the phone but i don't know what triggers it. then suddenly the screen would return to its normal brightness after a few seconds, although not always.
i suppose it's a driver issue...
antaed said:
on my titan, the auto brightness behaviour is erratic and sometimes goes too low.
the camera is one of the issue triggers. after every return from a photo session, the screen goes to a lower brightness.
also, sometimes it happens when unlocking the phone but i don't know what triggers it. then suddenly the screen would return to its normal brightness after a few seconds, although not always.
i suppose it's a driver issue...
Click to expand...
Click to collapse
so you get the autobrightness to go as low as 'low' set manually? - I tried it but even after camera the lowest brightness I am getting is same as 'medium' when set manually!
drupad2drupad said:
so you get the autobrightness to go as low as 'low' set manually? - I tried it but even after camera the lowest brightness I am getting is same as 'medium' when set manually!
Click to expand...
Click to collapse
no, not that low only lower.
but you are right, even in complete darkness the screen won't go to its lowest setting...
Yes same issue here.
Automatic can go a little bit lower than medium, but not much. Too bright in dim environement.
For general use, i would like to have a preset between low and medium
Since these days many people like ultra bright screens (and ultra loud sound) i am not sure HTC will try to fix this "issue".
I just hope Microsoft can add a brightness slider in the future. (Or bility to set the min auto and max auto levels)
Btw, do you know why camera mode go into max brightness ? This is a little harsh indoor.
crmb said:
Yes same issue here.
Automatic can go a little bit lower than medium, but not much. Too bright in dim environement.
For general use, i would like to have a preset between low and medium
Since these days many people like ultra bright screens (and ultra loud sound) i am not sure HTC will try to fix this "issue".
I just hope Microsoft can add a brightness slider in the future. (Or bility to set the min auto and max auto levels)
Btw, do you know why camera mode go into max brightness ? This is a little harsh indoor.
Click to expand...
Click to collapse
Yes that behaviour is very strange too! I think it's present only in the Titan. Some other windows phone manage the camera brightness a little better. But then I think increased brightness while using camera sort of makes it little pleasant when using it outdoors. But indoors as you mentioned, it's a bit too harsh brightness!
I think it's the light sensor that doesn't work properly. Some places/forums mentioned about issues with various HTC driverseven after those 2 softwares updates we received in Nov-early Dec.
In daylight,the auto brightness works wonderfully for me,I never change it.
But in a fairly dark room,it's too bright and most of the time,I set it to low
I usually set it to medium... and set to low by myself by night.
I have sent a message to HTC (via theirs contact/ticket system) about the "can be improved" auto brightness, and "camera set brightness to max" issues.
Better than nothing.
Since this is a easily reproductible problem, maybe they can take a look if they receive several messages about this.
I wonder if the screen going to max brightness with camera may have something to do with the "HTC Camera modes" addon ? (who knows..)
But i don't see how to remove it. I even can't find it on the marketplace (under HTC section).
I have same issue, I get blinded when I check the time on my phone at night
It was there even before camera modes update was applied by HTC. So unlikely
Sent from my TITAN X310e using Board Express
Obviously, the brightness go to max too when using skype with video.
Hope they will notice and fix it.
Trying to talk to HTC customer service is especially unhelpful here in france.
They have absolutely no knowledge of theirs WP7 products
(whatever the problem encountered)
Now that we have unlocked roms, any way to tweak the auto brightness ?
crmb said:
Now that we have unlocked roms, any way to tweak the auto brightness ?
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Click to collapse
I've tried all 4 ROMs and they have the same behaviour as stock ROM at the moment. But it might be useful looking into the registry threshold values. I know there is some sort of home brew app that lets us set the volume increase in 10s, 20s, 30s or 50s. So a regedit might be somewhere, will dig around myself since you've reminded me again

light sensor

hi all, I noticed that light sensor doesnt work properly, when I go from dark to light area, the brightness increases but when I go from light to dark area the brightness wont decrease, on honeycomb it worked properly, anybody else experiences this problem?
Same here, it goes bright but does not decrease.
I use the app https://play.google.com/store/apps/details?id=rubberbigpepper.DisplayBrightness&feature=search_result#?t=W251bGwsMSwxLDEsInJ1YmJlcmJpZ3BlcHBlci5EaXNwbGF5QnJpZ2h0bmVzcyJd
make an invisible slider on the edge of screen to adjust brightness.
is there any way to make it work properly?
Don't think so. Its pretty much unusable now.
Sent from my HUAWEI MediaPad using Tapatalk 2
There are lots of negative comments about light sensor, but i have to say it works well to me on ICS. Could be possibly massive amount of defected devices.
Lightsensor doesn't work for me either - too bad, hope it will be corrected.
Perhaps it's because I'm running ICS "General Channel".
HUAWEI MediaPad FIRMWARE(S7-301u,android4.0,C232B002,General Channel)
Do the sensor dim the light in the same session for you?
Here it turns up the light but not down again.
Sent from my U8800 using Tapatalk 2
Same here, adjusting upwards works fine, but it doesn't adjust downwards in low light conditions.
I have tried two apps that turns the light down again, custom auto brightness and lux auto brightness.
One small problem. The pad will crash on pattern unlock after sleep. I Also the light sensor will not work s after wake up sometimes.
Sent from my HUAWEI MediaPad using Tapatalk 2
mangoman said:
I have tried two apps that turns the light down again, custom auto brightness and lux auto brightness.
One small problem. The pad will crash on pattern unlock after sleep. I Also the light sensor will not work s after wake up sometimes.
Sent from my HUAWEI MediaPad using Tapatalk 2
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Click to collapse
I'm guessing no one has had any luck with this issue but I figure I'd necro the thread anyways. My light sensor sucks also. I used 'Android Sensor Box' to get the values coming out of the sensor. It only displays either 40 lux or 280 lux which is obviously not right. This is on Cyanogen 9, stock t-mobile ICS and the rooted international gingerbread(can't remember which one exactly).
So I was wondering if anyone who owns one of these has ever gotten a sensor value that makes any sense.
thanks
nope,
I use instead display brightness https://play.google.com/store/apps/details?id=rubberbigpepper.DisplayBrightness&hl=no
create an invisible brightness slider on theedge of the screen.
Try using custom auto brightness with the auto brightness on (there's a setting in that app that disabled the system auto brightness at screen on. Turn it off).
The original kernel only recognized 3 light levels. If you use bart's kernel it will recognize 6 levels.
Yes, I think there's a software problem because both app (lux and cua) crash hard in HMP, but I don't think fixing it is a priority.
Sent from my HTC Glacier using Tapatalk 2
How to use custom auto brightness without crashing the tablet.
There are 2 options that should be followed, other settings can be adjusted to your liking.
1. In preferences, Check Use pulsed sensor mode. Basically this option will make the app read the sensor itself instead of listening the sensor value given from the system.
2. In advanced preferences, set the sensor update speed to either half sec or 1 sec. I tried normal, but the app won't read the sensor value, so probably the slow normal maximum setting only works if you get the sensor value from the system.
You can set disable system auto brightness. I recommend it before because the setting was a "hack" which was making the system read the brightness value thus the app can get that value. Right now it's recommended that you check the disable system auto brightness.

Android 6.0 Adaptive Brightness Spiking and Dropping

I'm using a stock BLU R1 HD running Android 6.0 and within the last month, give or take, my phones brightness has randomly been spiking or plummeting before evening out into something legible. I also use Twilight(With pro unlock) and I have for years. I have disabled Backlight Control in the app. I have tried to go into my settings and disable Adaptive Brightness, but it will not stay disabled and turns itself back on as soon as I leave Settings. I've recently installed Lux but the problem persists. I've been googling it and all the responses I find are from 2015, give or take, and most apps regarding brightness have also not updated since around that time.
The frustrating part is that most of the time when it changes I'm not even moving and the light around me is not changing. The problem actually occurs more in normal, indoor lighting than it does in darkness or bright sunlight, and I've been careful not to cover the front camera, where I think the light sensor is, just in case I was the problem.
Does anyone know what I can do? How I can either fix Adaptive Brightness to stop randomly changing my brightness for sometimes 10 to 15 seconds before going back to where it should be, or how to disable Adaptive Brightness so it will stop turning itself back on?
I'd prefer not to root my phone, so please don't suggest it unless there really is no other option. I've ruined several phones that way in various ways and have concluded that rooting is just not for me.

Any way to disable auto dimming on chrome, Facebook etc.?

If you've got auto screen brightness enabled, if you open up chrome, or Facebook, or certain apps, the screen dims slightly... Which is annoying.. Apart from turning off auto brightness (which I like to keep on) is there any way to stop it?
It happens even if auto brightness is off ! Very annoying and there's no way round it :crying:
falsivas said:
If you've got auto screen brightness enabled, if you open up chrome, or Facebook, or certain apps, the screen dims slightly... Which is annoying.. Apart from turning off auto brightness (which I like to keep on) is there any way to stop it?
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Click to collapse
I can't recreate this problem. The screen does dim itself a few seconds before your screen timeout is set, so that maybe it. Try increasing your timeout from the default 30 seconds under the Display options.
jamiejako said:
I can't recreate this problem. The screen does dim itself a few seconds before your screen timeout is set, so that maybe it. Try increasing your timeout from the default 30 seconds under the Display options.
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Click to collapse
No, it's definitely there...think it's something to do with power-saving or to prevent screen burn-in because these 2 apps have mainly white screens. If you compare the screen of FaceBook / Chrome to an app which doesn't dim ( e.g. ebay) then you can see a definite dimming as soon as you open either one.
I didn't noticed it before seeing this thread. Personally I like it ^^
But I understand that we should be able to deactivate it.

Screen on notifications and lower ambient brightness

Hi guys
I tried searching everywhere for two apps and can't find anything. I think it would be really simple but since there is no app to do this I find it strange, or maybe people don't need this...
The first one is a way to turn the screen on when I receive a notification on my watch (when ambient mode is off). I have a ticwatch E and find it really annoying to not have an option for this. Does anyone have any solution?
The other is brightness control when in ambient mode. I would like to lower the brightness of the watch when it is in ambient mode. I know that there was an app to do this (swapp true brightness or something like this) but it no longer works. Does anyone know one that works?
I found it is annoying too, I own a Ticwatch S and I want to turn off the Ambient light too but it can't pop up notification on screen after turning it off , also I wanted to turn down the brightness of the Ambient light because it make burn in on my screen after 4 month didn't change watch face

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