Screen Won't turn on, flashing white/blue LED - Nexus 5 Q&A, Help & Troubleshooting

Lately my Nexus 5 (running CM11) will occasionally turn allow me to turn the screen on, and the notification LED will start slowly flashing a whitish-blue color.
It even seems to resist me trying to reset it, as I'll hold the power button down for 30 seconds at a time and it won't reboot. After doing this 5 or 6 times eventually it'll reboot and then act fine.
Does anyone have any experience with this type of behavior or know something to try? It's been happening for a few weeks now so I'm not sure if it started with the latest M-build or is unrelated.
Thanks,
Bish

Related

[Q] TF Powers Up, but Touch Screen is not working so I cant get past the lock screen

I did a search but no solutions came up.
Basically, when I touch the screen to move the little lock icon over to unlock it nothing happens.
I powered it off by holding power for 10 seconds and then powered it on again.
No bueno, nothing happened.
Anyone else run into this and was able to solve it?
yes, i had the same problem, you will not like this..
do one step at the time and check if it works, if not continue to the next one
1. cold reboot (hold power button for 30-60 seconds),
you can try step 1 several times
2. turn it off, let it charge for 2-3 hours, turn it on
3. reboot to safe mode (this not really sure how i did it..lol.. i think is, turn off and turn on and quickly hold both volume keys until it boots up, if you did it correctly it will boot and say "safe mode" at the bottom left corner).
4. reset to factory settings, hold volume (-) and power key at the same time, (this will erase everything)
when i had this problem, i actually had to cold rebooted several times and reboot into safe mode after step 4 to have the touchscreen working again..I was about this close () to give up and return it to walmart..
I had the same thing happen to me, and all the rebooting in the world couldn't fix it. I don't know if you're still on stock rom or not, but what I did was reflashed the Prime rom and it worked again.
Nothing helped, even hard wipe.
Returned the TF.
I had this same problem... Unfortunately the only thing that worked was letting the power drain out. That was a huge pain because the Transformer has a killer battery and there are only so many times you can turn the screen on and off to drain it. It took about 4-5 days to fully drain. After that point I had upgraded to 3.1 and it has worked flawlessly since then... definitely a firmware problem not hardware.

Unale to bring out of sleep

As the title suggests, sometimes when my tf700 has had a long period of being idle if I go to use it and press the power button nothing will happen. I can still hear it functioning though cause I've accidentally taken screen shots when trying to reboot it when this happens, the screen is just black and I have to reset it.
Any suggestions?
Sent from my ASUS Transformer Pad TF700T
Try switching WiFi sleep off and see if it helps.
Wifi sleep off?
I have that happen to me more than a few times. I just end up hitting power button and just tapping the corner. It works sometimes. but it's not always faster than just rebooting. Although, if you're going to reboot, just hold the power button till device shuts off.
What I think is happening is not that it's not waking, the display is just not turning on. I noticed this by plugging in the charger, which always turns on the display and device.
Yeah, the display isn't coming back up. I've noticed that too because I can still hear events occur (ie: unplugging the charger).
Another user on here tipped me off that it could be that it's in power save mode and the dimmer is COMPLETELY down, if you bump the brightness dimmer up just a hair, even 1 notch, it'll stop it from doing it, or at least it's stopped it so far for me since I changed it.
Why start two threads on the same issue?

[Q] Screen won't turn on/can't boot

I think my problems began when I installed the OTA 4.2 update recently. The entire system bogged down and became pretty much unusuable. Often, I had to press the power button 3-4 times to turn on the screen if the screen timed out. Sometimes I would have to wait for at least 5 minutes before I could wake the screen again.
But since a week, I can't get my Transformer Infinity to wake up, at all. When I press the power button nothing happens. If I hold it for a long period of time (10 seconds) it gives a short buzz, but nothing visible happens otherwise.
I have tried pretty much everything I can imagine now. I have even tried to drain the battery completely (then absolutely nothing happens when I press the power button) and re-charge the device, but the problem persists. I have tried to start it connected to the keyboard dock and without, but for no reason.
Connecting the TF to a desktop computer doesn't seem to do anything either.
Please, can anyone give me a hint?
Hrafnahnef said:
I think my problems began when I installed the OTA 4.2 update recently. The entire system bogged down and became pretty much unusuable. Often, I had to press the power button 3-4 times to turn on the screen if the screen timed out. Sometimes I would have to wait for at least 5 minutes before I could wake the screen again.
But since a week, I can't get my Transformer Infinity to wake up, at all. When I press the power button nothing happens. If I hold it for a long period of time (10 seconds) it gives a short buzz, but nothing visible happens otherwise.
I have tried pretty much everything I can imagine now. I have even tried to drain the battery completely (then absolutely nothing happens when I press the power button) and re-charge the device, but the problem persists. I have tried to start it connected to the keyboard dock and without, but for no reason.
Connecting the TF to a desktop computer doesn't seem to do anything either.
Please, can anyone give me a hint?
Click to expand...
Click to collapse
Sorry, but I think it's time to call Asus Tech support for an RMA.
Hrafnahnef said:
I think my problems began when I installed the OTA 4.2 update recently. The entire system bogged down and became pretty much unusuable. Often, I had to press the power button 3-4 times to turn on the screen if the screen timed out. Sometimes I would have to wait for at least 5 minutes before I could wake the screen again.
But since a week, I can't get my Transformer Infinity to wake up, at all. When I press the power button nothing happens. If I hold it for a long period of time (10 seconds) it gives a short buzz, but nothing visible happens otherwise.
I have tried pretty much everything I can imagine now. I have even tried to drain the battery completely (then absolutely nothing happens when I press the power button) and re-charge the device, but the problem persists. I have tried to start it connected to the keyboard dock and without, but for no reason.
Connecting the TF to a desktop computer doesn't seem to do anything either.
Please, can anyone give me a hint?
Click to expand...
Click to collapse
Hmm i often have he issue with needed to press the power button a few times to wake the screen. Just thought it was 'one of those things' hope this doesn't happen.
KinetiClutch said:
Hmm i often have he issue with needed to press the power button a few times to wake the screen. Just thought it was 'one of those things' hope this doesn't happen.
Click to expand...
Click to collapse
Actually, I have had that problem for months, and I thought it was "on of those things" too, but it instantly got worse after my 4.2 update. Up until last week when it just stopped turning on again all of a sudden.
I have also tried plugging the MicroHDMI to a larger screen, but the screen just complains that there is no signal in the HDMI cable.
I have contacted my local ASUS support in a vain hope they can direct me at a solution that doesn't involve me loosing my device for a lengthy period of time and getting it back without my precious (un-backuped:crying vacation photos.
Hrafnahnef said:
Actually, I have had that problem for months, and I thought it was "on of those things" too, but it instantly got worse after my 4.2 update. Up until last week when it just stopped turning on again all of a sudden.
I have also tried plugging the MicroHDMI to a larger screen, but the screen just complains that there is no signal in the HDMI cable.
I have contacted my local ASUS support in a vain hope they can direct me at a solution that doesn't involve me loosing my device for a lengthy period of time and getting it back without my precious (un-backuped:crying vacation photos.
Click to expand...
Click to collapse
A lesson learn, I always keep all my stuff on sdcard, never on internal storage.
Same Problem Here
I just got my tf700t April 17, and I used it for a few days and did the updates before going on vacation for a week. After a few days on vacation, I noticed the volume rocker wasn't responding all the time. I tried to restart the tablet, and once it shut off, it never came back on. Same issues as original post... Screen doesn't turn on. If I hold the power button down for 10 seconds it vibrates, but nothing happens. Very upset to spend this kind of money on a tablet to not even be able to use it for a week. I will be sending it in for RMA... I have tried everything in every post to try and fix the problem, but the screen just doesn't want to turn on. Hope Asus will be quick about it!!!
Keith

display started flickering

I noticed that if i leave the screen on (with gravitybox) for a mid-long period, e.g. 30/60 min, the display will start flickering (or jumping) and the oscillation will increase with time. The only solution is to turn off the phone and let it rest for some time then power it on. Do you know why?
Arathon said:
I noticed that if i leave the screen on (with gravitybox) for a mid-long period, e.g. 30/60 min, the display will start flickering (or jumping) and the oscillation will increase with time. The only solution is to turn off the phone and let it rest for some time then power it on. Do you know why?
Click to expand...
Click to collapse
I am not sure if mine is related, but today my Nexus 5's screen flickered then went black. I can feel the phone vibrate when holding the power button down. But still nothing, tried plugging into computer and after unplugging I hear the low power chime. So I know that it is working aside from the screen staying black.
The phone is running 4.4.3 stock that I flashed via twrp, with faux123 18u kernel, exposed installer, gravity box. This could all be coincidence, and I could just have a bad screen. But does anyone have any suggestions?

Nexus 5 Random Shutdown Frequent Problem

I don't understand how exactly can I explain the situation, but I'll be as specific as I can. Please try to understand and help me from this.
My Nexus 5 is on Marshmallow without any roots etc ever. Now, the problem goes like this:
Suppose I press power button once, then screen should turn on/off once. Now this which happens normally in any phone happens in mine for first few times, then it starts like if I press power button once to turn screen off, it goes from off and turns back on, I again press power button, again from on it goes off and back on, this keeps on happening until I try my luck for it to off, but then sometimes it happens like after so much pressing it eventually show me "power off" option on screen(which generally should open if I hold the power button). Now once I encounter this "power off", no matter what I do, I power off/not, it'll automatically turn off, and this happened atleast 10+ times till date. So finally whenever I encounter "power off" option, which sometimes comes when I try to turn screen on or sometimes off, but never I hold the power button, but finally even If I don't click on power off, it'll power off.
And that isn't yet strange till there, normally now "Google" shows on screen when device is powered on, but here after encountering "power off" it shows "Google" and turns off.
This problem has happened to me from maybe starting a week ago, atfirst I ruled it as maybe hardware problem, cause after 3 factory resets, nothing changed, but then when I did wipe system cache and data format from recovery screen, everything got resolved. But this too remained for 2-3 days, again same problem started after it, I this time cleared system cache from recovery, and this time too it helped somewhat. so I can atleast say that it isn't a hardware power button problem, but something which I don't know what, always creating problems from software.
Now this problem has developed itself, because now the power button is kinda working okay, but now the "power off" comes on screen automatically, I can say once-twice a day, and as explained 'n' times before, once I encounter this, mobile turns off.
So everytime I've to turn phone on after this, and pray that it doesn't repeat, but it's yet going on, and i'm so pissed off by this phone, I regret buying this, honestly as till now mentioned I tried whatever I could/I knew, but nothing, nothing's helping me.
Also the problem intensifies when phone is on charge & "power off" is encountered, then the phone goes to turning off and "Google" is shown, then it shows "Google" then turns off, then it shows "Google" then turns off, and this loop keeps on going.
Finally I hope i'm as clear as possible, if someone can please help, I can guarantee any kind of format will just resolve the problem for few days only, and hardware power button problem i'm not feeling it as formats basically help it great, but anyway if I'm going wrong somewhere/need proper explanation somewhere then please tell but resolve this asap.
Phone's from India and it's been 1 year since bought and atleast a month from the Marshmallow OTA update and this problem started randomly without me doing anything I guess from a week ago.
I think you should take a look at that power button.
It's your battery. I was having the same problem with my nexus, I replaced the battery and the reboots are gone.
Mine did this exact thing a couple of weeks ago. really annoying and couldn't put my finger on it, until i got so annoyed that when it came up with the power off notification I repeatedly pressed the power button for maybe 20 times, this resolved it for a few days, though to be honest, the best advice that someone posted, was that a sharp shock to the side of the phone that the button is on resolved it, been over a week now and it's been fine.
I put it down to the case i had on it, harbouring small dirt that was getting into the button housing and interfering.
try it out, failing that, perhaps a new power button, i did have one in my ebay basket, though i don't need to go down that route, not for the foreseeable anyway.
**edit
incidentally, i went down the software route too wiping caches etc. no avail.

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