Auto brightness problem - Redmi K20 / Xiaomi Mi 9T Questions & Answers

Hi guys, I'm having this problem for about 4 months, every time I turn on the auto brightness it goes to max, even when is super dark in my room, it started after I first unlocked the bootloader, only after I done that, the problem appeard.
I tried to lock the bootloader to see if doing that would revert de situation, but no success!
I've tried multiple costum rom's, I even went back to miui 10, but nothing would revert the situation!
Any ideas that could solve this problem?

if on miui then use code to get to service menu and test sensors

yaro666 said:
if on miui then use code to get to service menu and test sensors
Click to expand...
Click to collapse
I've done that, the sensor seems to work fine, with no light it stays on 0 and when I turn on the light it goes to the max, but on the miui it's always on the max brightness, even if I put it on minimum manually with auto brightness on, it still shoots to maximum brightness

Related

Screen IS OFF, but it is responsive!!!!!

SOD and random screen freezes has been bothering me almost always. I was reading all over the xda, different complains and strange solutions for them. I almost tried all of them and NONE is REALLY working (at least for me).
Recently I notice that when I wake up my phone (with yes button) after turning on, LCD immediately turns off. I mean after waking up the lcd, even if it is awake and responses to screen touch (even I can unlock it) but the LCD is off!!!! in this situation if I continue touching the screen it comes to life after couple of seconds and if not it goes back to sleep mode.
I wanted to see if anybody else has experienced same thing and If there is any solutions for it or not.
my android is HyperDroid http://forum.xda-developers.com/showthread.php?t=769026
and my kernel is hastarin http://forum.xda-developers.com/showthread.php?t=787588
I assume you are using the auto backlight...
If so search the problem is discussed in the hyperdroid thread.
Hold up to a bright light when that happens.
hold up to a lightbulb and then turn of autobrightness.
joseph230 said:
SOD and random screen freezes has been bothering me almost always. I was reading all over the xda, different complains and strange solutions for them. I almost tried all of them and NONE is REALLY working (at least for me).
Recently I notice that when I wake up my phone (with yes button) after turning on, LCD immediately turns off. I mean after waking up the lcd, even if it is awake and responses to screen touch (even I can unlock it) but the LCD is off!!!! in this situation if I continue touching the screen it comes to life after couple of seconds and if not it goes back to sleep mode.
I wanted to see if anybody else has experienced same thing and If there is any solutions for it or not.
my android is HyperDroid http://forum.xda-developers.com/showthread.php?t=769026
and my kernel is hastarin http://forum.xda-developers.com/showthread.php?t=787588
Click to expand...
Click to collapse
Not only hold it up to a bright light, but once the screen comes back on go insto display settings and turn off the auto brightness. If our using hyperdroid you should try phiremod CM6
I had this problem. I also search xda to find solutions. The only thing that worked for me was to update to the latest radio. 2.15.50 if you havent tried that already
good luck
cs378 said:
I had this problem. I also search xda to find solutions. The only thing that worked for me was to update to the latest radio. 2.15.50 if you havent tried that already
good luck
Click to expand...
Click to collapse
My Radio is 2.15 already.
I will try the bright bulb and turning off the auto balcklight to see wat happens. I hope it fix the problem. I will report back with the result.
Thank you everybody for the replies. I really appreciate it.
For EVO kernels, screen backlight turns off when brightness value is set lower than 30. Meanwhile the default lowest autobacklight level is 20. If you use a Cyanogenmod build, the levels can be adjusted, but the "screen dim level" cannot be set to values greater than 26.
The best solution would be lowering turn-off threshold in backlight driver to 20 or less.
RobertsDF said:
hold up to a lightbulb and then turn of autobrightness.
Click to expand...
Click to collapse
Thank you.
I used the trick and when I turned the auto balcklight off, it seems that my problems are gone.
AMCJUNGLE said:
Not only hold it up to a bright light, but once the screen comes back on go insto display settings and turn off the auto brightness. If our using hyperdroid you should try phiremod CM6
Click to expand...
Click to collapse
Thank you , the tricked worked
About PhireMod, I switched to it and till now LATE WAKE UP time is gone. It is waking up very fast and normal. Of course it had the same auto backlight problem which got fixed by disabling it.
Also for me HyperDroid was not giving me bluetooth and it was causing the phone process to FC. But PhireMod successfully passed the bluetooth test and I am using it now.
Thank you again for hints and suggesting the PhireMod.

[Q] Kitkat 4.4.2 breaks many screen features need Help

Hi guys,
I have upgraded my n9005 to KK for a while now. And it seems that with KK 4.4.2 randomly break my auto brightness from time to time. This issue occurs the same time when an incall screenoff stop working.
To begin with, after a while of usage the auto brightness feature breaks where it did not adjust automatically. I got a very dim brightness level eventhough it's a night time. Also the auto brightness level doesn't work as well. But when I turned this feature off the brightness slider works again. Now while this is happening and I'm on the call my screen won't turn off automatically during the call or when I have finished my call the screen wont turn on. So for both issues I have to manually activate the screen via Home/power button. Moreover, I have notcied that while this is happening when I entered Camera app, the screen will be fixed on the landscape mode only and there is no way I can make portrait back again.
To be even more surprise, these issues will be gone and come back from time to time without restarting. However, upon restarting everything works fine for a while.
What I have tried to solve this issue:
- Reflash stock firmware (official version of my country)
- Clear dalvik
- Flash stock firmware (latest version from DBT)
Still I'm unable to solve these issues. I'm wondering that have any of you guys are facing these issues as well? I have searched and it seems that I'm only one having these problems. I just want to know whether this is only software or hardware related
Thanks
SoKoOLz said:
Hi guys,
I have upgraded my n9005 to KK for a while now. And it seems that with KK 4.4.2 randomly break my auto brightness from time to time. This issue occurs the same time when an incall screenoff stop working.
To begin with, after a while of usage the auto brightness feature breaks where it did not adjust automatically. I got a very dim brightness level eventhough it's a night time. Also the auto brightness level doesn't work as well. But when I turned this feature off the brightness slider works again. Now while this is happening and I'm on the call my screen won't turn off automatically during the call or when I have finished my call the screen wont turn on. So for both issues I have to manually activate the screen via Home/power button. Moreover, I have notcied that while this is happening when I entered Camera app, the screen will be fixed on the landscape mode only and there is no way I can make portrait back again.
To be even more surprise, these issues will be gone and come back from time to time without restarting. However, upon restarting everything works fine for a while.
What I have tried to solve this issue:
- Reflash stock firmware (official version of my country)
- Clear dalvik
- Flash stock firmware (latest version from DBT)
Still I'm unable to solve these issues. I'm wondering that have any of you guys are facing these issues as well? I have searched and it seems that I'm only one having these problems. I just want to know whether this is only software or hardware related
Thanks
Click to expand...
Click to collapse
Kinda noticed this while I was briefly on kk. If you're on AT&T keep in mind that it was not the official release, and bugs are present.
Sent from my SAMSUNG-SM-N900A using xda app-developers app
sireniankyle said:
Kinda noticed this while I was briefly on kk. If you're on AT&T keep in mind that it was not the official release, and bugs are present.
Sent from my SAMSUNG-SM-N900A using xda app-developers app
Click to expand...
Click to collapse
Thanks for letting me know that this is common for KK on N9005. LOL I thought it was HW related issue though

[Q] Screen flashes on unlock (lollipop)

I tried searching if this happens to anybody else, but couldn't find it. Since I updated to lollipop (I put original polish rom first via odin) whenever my auto brightness is turned on, when I wake the phone using home key or power button, my screen turns on with full brightness for a half second or something like that, and than goes back to normal.... I thought it was a bug on polish ROM, so I flashed austrian rom, but no improvement. Now I have custom TW rom, and it is still the same. When I turn auto brightness off, it doesn't happen. So I suspect it to be that screen turns before the light sensor on unlock, and it is set to full brightness always. is there some file I can edit, so screen starts at lowest brightness or delay screen start for half a second so the sensor can start first.
It is killing me when I get a message while sleeping in a dark room, and I want to check it, it blinds me so I wake up, and can't go back to sleep later!!!
LOL I have the same problem, which is extremely irritating to say the least, but I had no idea that it had to do with auto brightness! I am on latest AryaMod, which is stock TW based ROM, so I guess its a problem of all the TW releases?
Don't know! I will ask this in AryaMod topic and see whether dev will be more than kind to provide us a solution. Thanks for creating the topic, I had thought about it a lot of times, but was never intrigued enough.
neky92 said:
I tried searching if this happens to anybody else, but couldn't find it. Since I updated to lollipop (I put original polish rom first via odin) whenever my auto brightness is turned on, when I wake the phone using home key or power button, my screen turns on with full brightness for a half second or something like that, and than goes back to normal.... I thought it was a bug on polish ROM, so I flashed austrian rom, but no improvement. Now I have custom TW rom, and it is still the same. When I turn auto brightness off, it doesn't happen. So I suspect it to be that screen turns before the light sensor on unlock, and it is set to full brightness always. is there some file I can edit, so screen starts at lowest brightness or delay screen start for half a second so the sensor can start first.
It is killing me when I get a message while sleeping in a dark room, and I want to check it, it blinds me so I wake up, and can't go back to sleep later!!!
Click to expand...
Click to collapse
Same thing here mate. I noticed that this happens to all 5.0 rom and currently I am using ported 5.0.1 rom and it went well.
shchiam1978 said:
Same thing here mate. I noticed that this happens to all 5.0 rom and currently I am using ported 5.0.1 rom and it went well.
Click to expand...
Click to collapse
I tried flashing 5.0.1, but it didn't fix it, I also have a problem with screen not turning off during calls now, which rom are you using?
neky92 said:
I tried flashing 5.0.1, but it didn't fix it, I also have a problem with screen not turning off during calls now, which rom are you using?
Click to expand...
Click to collapse
I am using death note.
Now I am back to Arya to test the battery life.

Flash light issue

So I have this problem for about weeks now, whenever i turned on my flash light, about 5 minutes later it turned off automatically, so i'm thinking it has to be a settings for flash light timeout, but I tried to look in the setting app, plus gravitybox mm, but I couldn't find it. Or maybe i did find it but i didn't noticed it, i don't know, can anyone help me with this?
Thank you

Auto Brightness issues

I have the Galaxy S8+ on Sprint as well as my gf. We are on the latest update on Sprint and the auto brightness on both phones doesn't work anymore. Does anyone else have this issue?
yes its a bug...last update not fix it completely
Always found that auto brightness was a battery suck. I've never had problems with setting it to 50% and being able to see it while indoors or out. Checking your phone at 3am with 50%, however, might blind you though.
I was having trouble since the update a couple of days ago. I just found a link that walked me through calibrating the sensors again, which seems to have done the trick. I'll keep an eye on it and update if there are any changes, but hopefully that takes care of it for you too! PM me if you'd like the link, as I am unable to post it because I have not been active enough on XDA.
This could help
https://recomhub.com/blog/galaxy-s8-and-galaxy-s8-plus-how-to-calibrate-auto-brightness/
Sorta.... Not really.... No
This partially..... No, with this, it's all or nothing. I've tried this in a pitch black room to set the low light. When I flip the might on, set it to maximum and switch auto brightness on, everything appears fine. When I flip the might off again thing into complete darkness, the auto brightness does not return to the lowest setting. It stops at approximately 15-20%.
Thanks for the resource, but a different calibration method must be used to restore true accuracy. There was absolutely nothing wrong with it before, but leave it to Samsung to mess with something in good working order and which no one asked to be "fixed."

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