Database Users

[Q] Screen shuts off trying to unlock

My friend just got a G2 and is having this issue as well. I use a pattern unlock and am running Clean Rom. Some times when I try to unlock the screen it just randomly shuts the screen off while Im trying to draw the unlock pattern. I'm hoping someone has a solution for this.
Thanks

prerunnerseth said:
My friend just got a G2 and is having this issue as well. I use a pattern unlock and am running Clean Rom. Some times when I try to unlock the screen it just randomly shuts the screen off while Im trying to draw the unlock pattern. I'm hoping someone has a solution for this.
Thanks
Click to expand...
Click to collapse
When I use the power button on the back of the phone instead of the knock-on, I had this same problem. I was rooted but on stock rom. I've read other posts about the same problem. I would try to put in my pattern and midway through the screen turns off. Sometimes it would be two seconds, sometimes like 10. Don't know what the problem was.
My knock-on feature was barely working. Some guy recommended getting this case: http://www.amazon.com/gp/product/B00FEQU1NG/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1
I needed one anyway so I got it. Haven't had an issue with the knock-on feature anymore. No idea why haha but whatever, it works. Kind of a ghetto workaround.

I'm having the exact same issue.
Factory reset several times, installing my usual apps or having just the default apps without updating them didn't make any difference.
After a factory reset I disabled the knock knock feature and still, when I try to bring my screen up and unlock, it immediately shuts off, preventing me from swiping.
Another side effect is, when I make a phone call, the screen immediately goes blank and it will never turn back on unless I restart by holding on to the power button, this is especially inconvenient when I need to dial some options (i.e.) voice mail options, corporate automated options.
All of the above happened while I had my Incipio feather shine case. (incipio.com/cases/smartphone-cases/lg-smartphone-cases/lg-g2-cases/lg-g2-cases-verizon/feather-shine-case-for-lg-g2-verizon.html) I took the case off and did another factory reset last night, and so far the knock-on rate has improved from 0% to at least 60-70%... Strangest thing.... If anyone else can shed some light onto what the hell happened/is happening, I'd really appreciate it! It's been a frustrating ride since this problem surfaced about a couple weeks ago. I had this phone for about 2 months now....

I'm having this problem too. It happens with both knock on and power button wake. I have noticed that the screen is not actually immediately turning off, though. In a completely dark room, I can still see faint outlines of my lock screen. Then, after the brief time out for dimming, the screen will go to its dimmed brightness (which is far brighter than what's concurring after waking the phone). I'm able to unlock, reboot, and usually that will solve the problem for a little while, but this is getting frustrating.
Stock rom, rooted, TWRP, Nova Launcher, and xposed. I'm not sure what's causing this.

I know it's been said many times but if you block the sensors with your fingers after waking the device, your screen will turn back off. Its a security feature/bug and I would assume this is what's happening here.

I ended up getting a certified-like new replacement from verizon... While I had the old one, I did a test with that sensor you're talking about and it didn't really make a difference. I made sure the sensor area was clean without anything covering it and the problems persisted. I really hope LG can find the root cause of this and fix it... Very frustrating.

Not a bug. But this is a feature we do not want. It is called proximity sensor. It is sensing too far imo. It is actually the one next to the front cam. Dont block it within 5 inches in front or you phone will sleep again. That should work with flip case. Annoyingfunction imo. Your device is not broken.

yonba said:
Not a bug. But this is a feature we do not want. It is called proximity sensor. It is sensing too far imo. It is actually the one next to the front cam. Dont block it within 5 inches in front or you phone will sleep again. That should work with flip case. Annoyingfunction imo. Your device is not broken.
Click to expand...
Click to collapse
exactly. the sensor in very sensitive to being covered. Because its hypersensitive and having undesireable effects I would consider this a bug since it is buggy.

I figured out what the issue was, at least on my phone.
Lightflow was detecting a bunch of alternate LEDs, which I felt inclined to tick the check boxes for, just to make sure it could control the LED fully. Having those boxes checked caused my phone to do this. Everything is fine since I've unchecked them, though. No sensor issue, no proximity/case issue, just Lightflow (which still works without those alternate LEDs checked).

Having this issue with my G2, its very annoying. Knock on does not work and screen shuts off after about half a second that I press the power button. Had to reflash to stock the first time this happened and fixed it but after about a month the same problem occured. I could however open by pressing one of the volume button together with the power button.
Hoping to find permanent fix for this problem.

thirtynation said:
I figured out what the issue was, at least on my phone.
Lightflow was detecting a bunch of alternate LEDs, which I felt inclined to tick the check boxes for, just to make sure it could control the LED fully. Having those boxes checked caused my phone to do this. Everything is fine since I've unchecked them, though. No sensor issue, no proximity/case issue, just Lightflow (which still works without those alternate LEDs checked).
Click to expand...
Click to collapse
Yeah that's it Lightflow
Disabling all the additional led found resolve my problem
THX

bigiuly said:
Yeah that's it Lightflow
Disabling all the additional led found resolve my problem
THX
Click to expand...
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Please tell me where to find these settings

taqikazmi said:
Please tell me where to find these settings
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Click to collapse
Settings / Led Control

bigiuly said:
Settings / Led Control
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Click to collapse
There is no option in settings like LED.

taqikazmi said:
There is no option in settings like LED.
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Click to collapse
In settings of Lightflow app

bigiuly said:
In settings of Lightflow app
Click to expand...
Click to collapse
I installed the app and fund the settings but all of them are already unchecked

[Q] Screen won't turn off

For some reason my screen won't shut off when I press the power button or by itself after any amount of time. I made sure all of the settings were set right that might keep it on. I know it's not hardware damage because I've pretty much never dropped it or handled it hard. The power button still works because it will get the turn off, restart, etc screen to go. Any idea how to fix it? I already did a factory reset.

JollyGreen527 said:
For some reason my screen won't shut off when I press the power button or by itself after any amount of time. I made sure all of the settings were set right that might keep it on. I know it's not hardware damage because I've pretty much never dropped it or handled it hard. The power button still works because it will get the turn off, restart, etc screen to go. Any idea how to fix it? I already did a factory reset.
Click to expand...
Click to collapse
Dial *#0*# check some test for dimming, sleep etc.

JollyGreen527 said:
For some reason my screen won't shut off when I press the power button or by itself after any amount of time. I made sure all of the settings were set right that might keep it on. I know it's not hardware damage because I've pretty much never dropped it or handled it hard. The power button still works because it will get the turn off, restart, etc screen to go. Any idea how to fix it? I already did a factory reset.
Click to expand...
Click to collapse
Download wakelock detector and see which app is keeping your screen on.

Dialed that number, the dimming worked, but the sleep button didn't do anything. I'll try that app out and see what it says.

In my understanding *#0*# dialing is for hardware check, if sleep is not working from there means it has nothing to do with any app & better to take to service centre.
Sent from my SM-N9005 using XDA Free mobile app

It didn't do it until after I tried to change my boot screen. Know if that would do anything? No boot animations go off besides the galaxy note 3 one (no Tmobile or samsung animation, and no shut off animation). I also rooted it so would they still help me even though the knox counter is 0x1?

Any help? Using the wakelock app it says that system manager application is used a lot more than anything else. Not sure what it does.

JollyGreen527 said:
It didn't do it until after I tried to change my boot screen. Know if that would do anything? No boot animations go off besides the galaxy note 3 one (no Tmobile or samsung animation, and no shut off animation). I also rooted it so would they still help me even though the knox counter is 0x1?
Click to expand...
Click to collapse
Try to flash complete stock ROM & clear Data & Catch before & after flashing from recovery may HELP.

That fixed it. I'm not sure why I didn't already try that since it seems kinda obvious. Don't know what made it do that though. Do you happen to know if modifying the boot animations can mess other things up?

Mine its not rooted still stock and all of the sudden started acting up with the screen ....i did the *# test and when i went to sleep it went straight to the lock screen ...any idea what could cause it

help
JollyGreen527 said:
That fixed it. I'm not sure why I didn't already try that since it seems kinda obvious. Don't know what made it do that though. Do you happen to know if modifying the boot animations can mess other things up?
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Click to collapse
how do you do that cause I'm having same problem s

scooby 777 said:
how do you do that cause I'm having same problem s
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Click to collapse
Mine does this every time I reboot my phone. I have to press and hold the home key, pick the pie chart, pick RAM and pick "Clear Memory". Then it's fine til the next time I reboot.

I had my note 3 with the same problem and solved it recovering the original system/media/bootsamsung*.qmg files.

to solve the problem plug the charger and unplug it immediately and plug it back in again. This is also the reason why the problem is caused. So doing it again will solve the problem.

Power on, fade in after 5.1.1 update...

Following the update to 5.1.1, when I switch on the Note 4 using the power button, the display fades in, slowly.
It takes ~1 second and is very annoying. I've been through display settings and a few other things, but nothing I do will make it appear instantly. I've tried a few web searches, but getting nothing relevant.
Anyone else see this? Anyone got a fix?
Thanks

Devany said:
Following the update to 5.1.1, when I switch on the Note 4 using the power button, the display fades in, slowly.
It takes ~1 second and is very annoying. I've been through display settings and a few other things, but nothing I do will make it appear instantly. I've tried a few web searches, but getting nothing relevant.
Anyone else see this? Anyone got a fix?
Thanks
Click to expand...
Click to collapse
Disable finger print lock.

Fingerprint lock was never enabled on the device. I figured that if someone wanted to steal it, I didn't want to motivate them to cut my finger off.
Also, I read the "Lag after 5.1.1 update", but assumed (!) that the fingerprint issue would not affect me because it had never been switched on.
On a hunch, I enabled fingerprint lock, then disabled it... problem resolved. Nasty.
Thanks.

Devany said:
Fingerprint lock was never enabled on the device. I figured that if someone wanted to steal it, I didn't want to motivate them to cut my finger off.
Also, I read the "Lag after 5.1.1 update", but assumed (!) that the fingerprint issue would not affect me because it had never been switched on.
On a hunch, I enabled fingerprint lock, then disabled it... problem resolved. Nasty.
Thanks.
Click to expand...
Click to collapse
Glad your issue resolved.

Lock screen not turning off unless I do it manually !!!!1

hello
i have note 4 n910c with 6.0.1
My screen doesn't automatically time out if I press the home button or the power button to turn on my screen. In order for the screen to turn off, I have to manually press the power button. Otherwise, the screen just stays on and drains my battery !!!!!
I should also note that if I receive notifications, my screen lights up and I have to either dismiss the notification or manually turn off the screen.
i downgraded to 5.1.1 it worked for few days then the same issue again
i formatted my device and flashed most recent stock rom 6.0.1 again few days and the same problem screen not turn off automatically
any solutions?

by the way when i use smart manger and end all RAM applications screen turn off work good immediately then after few minutes not turn off again

You can try widgetsoid app, that haves a big list of toggle widgets, and no lock screen is one of their widgets.
Sent from my XT320 using xda premium

Confirmed same issue here. Also same issue when using s-cover. Very annoying. Now that I've trained myself to manually turn off the screen, I'm getting much better battery life than I was with LP.
Sent from my SM-N910T using Tapatalk

rcobourn said:
Confirmed same issue here. Also same issue when using s-cover. Very annoying. Now that I've trained myself to manually turn off the screen, I'm getting much better battery life than I was with LP.
Sent from my SM-N910T using Tapatalk
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Click to collapse
after monitoring my device i found app that may cause the issue and after uninstalling it the issue was solved and my phone works good till now

amse_010 said:
after monitoring my device i found app that may cause the issue and after uninstalling it the issue was solved and my phone works good till now
Click to expand...
Click to collapse
It would be helpful if you told others what the app was, so that they can try your solution when they come across this thread...

Kinsman-UK said:
It would be helpful if you told others what the app was, so that they can try your solution when they come across this thread...
Click to expand...
Click to collapse
it was not a common used app just small arabic app using touch to count

Screen staying awake on Nexus 6P

Hi folks,
Just recently I have noticed that the screen is staying awake on my Nexus 6P. My phone is sat on my desk in front of me now and hasn't been touched for 5 minutes and the screen is still on. I have the screen timeout set to 15s so it should be long since off by now.
Does anyone know what the fix might be for this or how to diagnose the cause?
Thanks

gk141054 said:
Hi folks,
Just recently I have noticed that the screen is staying awake on my Nexus 6P. My phone is sat on my desk in front of me now and hasn't been touched for 5 minutes and the screen is still on. I have the screen timeout set to 15s so it should be long since off by now.
Does anyone know what the fix might be for this or how to diagnose the cause?
Thanks
Click to expand...
Click to collapse
Did u try to reboot? Did you enable or install anything thatll keep the display on? If enabled the proximity sensor will detect motion and keep the display on.

While charging/not charging or both ?

therock3181 said:
While charging/not charging or both ?
Click to expand...
Click to collapse
Both.

KLit75 said:
Did u try to reboot? Did you enable or install anything thatll keep the display on? If enabled the proximity sensor will detect motion and keep the display on.
Click to expand...
Click to collapse
Yes, tried a reboot but still happening.
Not enabled anything purposefully but i'm always installing apps although not necessarily anything that should keep the display on. I was hoping there might be an app / menu that could tell me what app was keeping the screen on.
RE: proximity sensor - the screen stays on even when its laid face up on my desk with nothing near it, so can't see it being that.

gk141054 said:
Yes, tried a reboot but still happening.
Not enabled anything purposefully but i'm always installing apps although not necessarily anything that should keep the display on. I was hoping there might be an app / menu that could tell me what app was keeping the screen on.
RE: proximity sensor - the screen stays on even when its laid face up on my desk with nothing near it, so can't see it being that.
Click to expand...
Click to collapse
Boot into safe mode and see if it's still doing it. If not, then it's an app that is keeping it awake.

Thanks for the help guys.
I installed Wakelock Detector last night and instantly identified a rogue app - an IP Camera app I was using - that was keeping the screen on. Uninstalled and all fine now.
Cheers again.