Screen is constantly locking for no reason, is my light sensor busted? - Nexus 5 Q&A, Help & Troubleshooting

Hi all,
When I'm using my month old Nexus 5 it will just randomly kick me back to the lock screen, sometimes I can just unlock it and keep on trucking but sometimes it will just immediately lock again or it will work for a couple of seconds and then re-lock. Once its in this state even a reboot doesn't always help and about the only thing I can do is get into recovery mode and re-flash it again. I used the Sensor Box app and have noticed that the light sensor is always reading zero, and I'm not sure if this is part of the issue?
This was happening on the PA Alpha, Stock 5.0.1 and since I was still having the issue I flashed back to 4.4.
The weird thing is that my phone had been fine for the 3 weeks or so I had it before hand. I flashed lollipop on it less than an hour after I took it out of the box and it had been running smoothly up until yesterday.
So a few questions:
Is there anything I can try to fix ir?
Can I use debugging to see what is causing the screen to lock?
Is this likely to be a hardware issue?
If it is, is there anything I will need to do to make sure I keep my warranty?
Any help is very much appreciated.

Bump with some other information:
I don't think its the light sensor, I tried using the phone in a pitch black room last night and the same thing was constantly happening, there was something else odd happening though.
From the restore of 4.4 I was on the "Select language" screen, whilst I could swipe and roll the various language options up and down the moment I presses "Next" the phone locked, if I left the phone on this screen eventually the screen would automatically lock and then it would keep locking itself constantly again.
Also, just for total clarification by "lock" I meaning "return to lock screen" not freeze up and become unresponsive.

Related

[Q] [SPH-D720] Back light appears to randomly shutoff

Over this past week the back light for my Nexus S 4G appears to randomly shut off. Right now it has happened about 5 times and when I need to use it right then, preventing me from just stopping to investigate what may be causing this. The screen still comes on allowing me to quickly unlock using the pattern and then restart by holding down the power button. The one time I was able to investigate a little I was navigating into the settings menu when the screen just went blank. I pressed the power button a few times and could see the hardware buttons below lighting up as if the screen was on but that was it.
I'm currently running Slim Bean (Android 4.2.1) Beta and will be trying another rom but wanted to see if anyone else may have encountered this issue before I bring it up with that thread.
Yeah experienced this too in most 4.2 ROMs that I've tried. Some people say it's a bug with the auto- brightness settings but I don't buy it since I don't really use auto-brightness but still get the error. I'm back to 4.1.2
Glad to hear. I was becoming worried I had some hardware that was failing.
I will turn auto brightness off and see how it goes.
Thank you
So it has happened quite a bit since my last post. Even with auto-brightness turned off. I'm blaming this bug for my alarm not continuing after I snoozed it a few times. (I know they are unrelated but its just really annoying).
It happened again about ten minutes ago and I managed to output a bug report feature on 4.2.1. Not sure if it is of any use to anyone. Message me if you would like it.

[Q] screen wierds out

I've had an odd problem with my 820 almost since getting. I'm hoping one of you geniuses have some advice.
When I turn it on it works perfectly, sometimes for hours. Then the screen goes blank, and then random pixels begin to appear, starting at the top of the screen. Outdoors rather than random pixels the screen goes almost totally green. Strangely, if part of the screen is obscured the green only covers rhe exposed area.
Pressing the on button repeatedly usually brings back the lock screen and reset (on+down) fixes the problem for another few hours.
By the way, eventhough I can't see the screen the touch sensor works. For instance I can hold theon button and then swipe downwards to turn off the phone. I can also answer and hang up using earphones.
My daughter who purchased the phone said it worked fine until the amber update. I had hoped the black update would fix the problem but no change. I found some posts from people with the same problem who sent the phone in to be fixed and got it back in the same condition. I really don't want to go through the hassle unless I expect to get it back fixed. I'd rather try fixing it myself.
My question is whether this is a firmware problem an whether it is likely that re-installing the stock black rom would do any more than the ota install that occurred automatically did (or didn't do).
Any ideas?
Nobody?
By the way it seems to happen only, or mostly when in standby.
I installed an app that displays a clock and doesn't allow the phone to go into standby mode,
and the problem doesn't appear to occur (unless I forget to leave the app on top).
I would set the phone to standby = "never" but the option isn't available on my phone, though
I understand that there are those with the standby = "never" option.
Any idea if I can set standby = "never" with keyboard commands, perhaps?

[Q] HELP: screen unresponsive when woken up ONLY

This issue make absolutely no sense to me, and only started yesterday.
First, I am stock, unrooted, no mods, no crazy sideloaded apps, just a good old Nexus 5.
When I go to wake the phone, I have noticed that the lock screen is 100% unresponsive. I cannot enter a pattern lock. I then switched to a PIN lock, thinking maybe there was an issue with the pattern. Again, unresponsive screen. So I took my screen lock off completely, thinking there is maybe an issue with the lock screen in general. Again, even with no lock screen, I cannot swipe screens, open apps, nothing. This also includes the soft keys at the bottom.
I decide to factory reset my phone. I update only my Google apps, and again notice the same issue. The screen is totally unresponsive, but then 2 white lines will flash at the top, and the screen will work.
Once those white lines flash, the screen is completely responsive like normal, there are no other issues until the phone goes to sleep again. Sometimes the little lines flash 2 seconds after waking up, sometimes 30 seconds, sometimes I have to hard reset the phone.
I also am linking to a YouTube video that I recorded of the issue in case I am not making sense.
So can anyone explain this to me? What could cause this issue on a phone that has never been rooted or flashed or anything?
Thanks in advance for the help!
https://www.youtube.com/watch?v=2r3U9MhZuG0&feature=em-upload_owner
Weird. Issue. Maybe you should stick everything from your sd to your pc.
And flash a factory image from fresh install from here - https://developers.google.com/android/nexus/images - if you're lucky the drivers maybe corrupt and not the hardware
Sent from my Android 5.0 Nexus 5
Could also be a loose connection. Maybe the flex cable to from your screen wiggled its way out a bit. I've never seen that before on any phone. I'd back everything up and flash a factory image. If the issue persists, contact Google and see if you can RMA the device.

[Q]Screen doesn't turn off when locking

Hello everyone.
I have a couple of problem with my xperia Z3. The problem is that when i press the side button to lock the phone, the phone get locked but the screen seems to be still on(and then turn completely off after a few seconds) . I mean that even if the phone is locked it's like i am seeing a completely black image. This doesn't always happens with Android KitKat but with the Lollipop upgrade i made yesterday flashing a generic Baltic firmware, the problem got worse! When it happens the screen stays on even after few seconds and it doesn't turn off and i'm forced to restart the phone to "solve" the problem. If it helps, when the phone locks fine the screen turns off immediatly but when the phone has this problem when i press the lock button i can see for a moment the screen locked, with the clock, the padlock icon, the fast dial icon and the fast camera icon ecc and then the screen turn black(but still on) like "something is slowing/blocking the phone from getting locked"
The second problem that i have is that sometimes when i make a call or recieve one when i put the phone to my ear the screen doesn't turn off and the tousch screen still works making me end the call unintentionally touching the screen with my ear for example. I haven't had this problem yet with Lollipop, but I used to have it with KitKat. Anyway this is the less important problem that i'd like to solve because even if the phone should work proprely by itself i can always accept the call and then lock the screen with the side button "solving" the problem of unintentionally ended calls. But the first problem really bothers me a lot and i'd really like to know how to solve it.
Does anyone have at least one of this two problems and knows how to solve them? Thank you !
I'm sorry for my english and i hope i've explained myself well. I've just restarted the phone so the problem at the moment doesn't persist but the next time it will happend i will make a short video to make you see exactly what happens or if you think that this two problem could be caused by an app just tell me and I will write you a list off the app that i've installed.
**Edit: I'm really sorry, i haven't read that this was the wrong section for questions, could someone move it to the right one? Thanks.
screen doesnt turn off after locked
Hi
After the upgrade, my screen also remains on, still lit after screen is locked. Pls help
I had the same problem. And got it fixed by disable and enable "adaptive brightness" .
elli said:
I had the same problem. And got it fixed by disable and enable "adaptive brightness" .
Click to expand...
Click to collapse
It worked! Thank you so much.

[SOLVED] Half of the screen flickers black between unlock and home screen

Couldn't find any similar topic except in forums for s10+, OnePlus and other phones. Sorry if I missed anything.
As in the subject, after unlocking, approximately half of the screen flickers black and goes to the home screen. It takes less than a second. Always top half, bottom half shows home screen right after unlock. This does not happen on each unlock, but also, there is no pattern - it can be after 5 or 30 unlocks, it can be after 5 minutes or 10 hours of not using the phone. It started mid-July and not only annoys but is starting to worry me. Solutions from other threads didn't help. For example:
Fingerprint sensor problem - I don't use it, I have pin lock.
Samsung Pay issue - I don't even have it available, so, don't use it either .
Animations - setting them off did not help.
I cannot guess anymore what would be the cause, if it's some app which wakes up after unlock or what else. The only thing I've changed (except updating apps) was adding another sim card, but my tiny little brain cannot find connection. I didn't test removing it as I need this sim active and don't have backup phone right now. Also, I would really like to avoid resetting the phone...
Did you experienced anything similar?
Thanks a lot for any help or suggestion.
are using Samsung or some third party launcher. Did you wipe cache? Latest firmware updates?
Yes, I did both, firmware update and cache wiping, no change. I'm using stock launcher.
did you try in safe mode to exclude some app causing it
Yes, I tried safe mode without success.
i would take it to Samsung repair centre if pos
Thanks for trying and all the steps. There's nothing like that where I live, neither any advisory place except for hotline. I can drop it at their service but will need to wipe it down before, which I keep as the last resort. I'll keep waiting for another firmware update and if nothing changes then I'm willing to do the hard reset. I just hope it's not a symptom of some virus - I'm trying to be most careful, scanning device periodically, didn't root, so I naively count on being safe...
i don't think it's virus. fingers crossed it's just software issue
hi again, just to let you know, I think I know what was causing this flickering and now I feel silly . Home screen rotation. I had this option turned on, and it's possible that sometimes, when I put my phone on the table, home screen rotates to horizontal position. Of course it locks after few seconds. I've noticed it completely accidentally, because one time, when screen flickered black there was slow-motion rotation animation in the background (which I've never seen before). That's why flickering was completely random to me, not connected to any type of notification whatsoever. Well, it's not, it has a pattern . I've checked it plenty of times and each time I lock my phone with home screen in horizontal view, but unlock in vertical, half of the screen is flickering black. That's it, at least I believe it must be this, because it happens each time and never when I lock my screen in vertical position.
Once again thanks for all the help!

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