Database Develop

I/O 2012 N7 now hard shutting down (crashing)

I got my Nexus 7 at I/O this year and I've been happily using it for nearly a month now. I don't know if my device differs in any way from one you can get form google play other than the white back.
Last night I was plugged into my wall charger at around 14% battery and playing SongPop with my girlfriend when my screen just shut off. It was like when you hold the power button on a laptop and BOOM, everything is black. It wouldn't turn back on so I unplugged it and plugged it back in. Got a charging screen so I let it set for a bit.
I came back maybe 15 minutes later and I was at 9% battery, which was odd given I plugged into the wall at 14%. I played with the phone for maybe 30s after boot and it happened again, I saw some weird artifacts on the black screen as it quickly shut off and the speakers played an awful crackly screeching noise. Plugged it in again, came back a bit later, still at 9% and played with the device again, same issue only after a little more time.
I'm currently at work with my N7 plugged into my Galaxy Tab 10.1 charger and charging it from 0 to 16% currently. The device is on but I haven't been touching it (and I don't plan to until it's at 100%).
Has anyone else had this issue?
I cant tell if it's some way I'm touching the device that's causing it to shut down hard, some issue with the battery or charging that is causing a rapid battery drop or even a short in the way I'm holding it when it's plugged into the charger?
I don't really want to deal with ASUS warranty returns already, though I have been unable to find anyone else with the same issue through google, so I turn to you for advice and similar stories.

Mine did the same thing the second day I had it. Now it won't boot. I'm waiting for Google to send me a new one.
Sent from my ADR6400L using Tapatalk 2

Mine did something similar last night. It was at about 6% battery charge and all of a sudden the screen just went black. I went and plugged it in, but it wouldn't power on completely (the screen was on but there was nothing there). I started seeing really thin, small green lines running down the screen. I turned it off and on a couple of times, and finally it booted up. I left it plugged in for awhile, and I just took it out at work to use a bit and everything seems perfectly fine. I wonder if there are some firmware issues with the power management or something. I was all set to put in a return with Google, but it appears to be okay. I'll keep a close eye on it for the next couple of days (I've only had it for a week).

TrevSo said:
Mine did something similar last night. It was at about 6% battery charge and all of a sudden the screen just went black. I went and plugged it in, but it wouldn't power on completely (the screen was on but there was nothing there). I started seeing really thin, small green lines running down the screen. I turned it off and on a couple of times, and finally it booted up. I left it plugged in for awhile, and I just took it out at work to use a bit and everything seems perfectly fine. I wonder if there are some firmware issues with the power management or something. I was all set to put in a return with Google, but it appears to be okay. I'll keep a close eye on it for the next couple of days (I've only had it for a week).
Click to expand...
Click to collapse
After leaving mine off and charging at work to 100% it seems to be working fine. I used it all last night with no issues. I haven't tried wiggling around the usb cable yet in the port to see if that caused any issues.
Firmware issues sounds about right, some sort of low battery safety feature or something? Who knows. I'll update this thread if I continue to experience problems. I'm already past my ability to return to Google so I'm in no rush to warranty to Asus and lose a development tablet.

[Q] Odd battery behavior, possibly faulty reporting. (CM11)

Recently updated from CM9 to jcsullin's CM11 (11-20140409). Most everything seems to be ok aside from an unusual battery issue, and I don't know what it's coming from. I've attached a screenshot with some battery stats to help out, but I can describe what was going on in this particular instance.
I've had my touchpad sitting on the touchstone nearly 100% of this time (only time it was not was when I picked it up and immediately returned it). At some point, loaded up and was playing Breach & Clear for a while. Finally stopped playing, and upon exiting, battery was reported at 1%. Now, I get that some things can drain the battery even while on a charger, but we're talking a span of maybe 60-90 minutes. At this point, I picked the pad up and the battery immediately went up to 100%, and I dropped it back onto the touchstone.
This is the second time I've had this happen. Yesterday, it actually shut itself off due to low battery when I picked it up. I turned it right back on, and it was reporting 100% (recovery also reports 100%). This morning, I reflashed the A6 firmware in case that was the issue, but it does not seem to have had any impact.
Really could use some advice here. I suspect the battery is more or less staying charged while on the touchstone, and that this is something related to bad reporting or (worst case) a defective tablet.
Thanks for any help.

Just a quick update. Shutting off the touchpad before leaving work, during the shutdown process, I saw the battery % drop from 100 to 0. As I was getting out the touchpad at work and turning it on, I got the battery-with-question mark symbol. Placed it on the touchstone and it booted itself. I decided to take it to recovery, and pulled it off the touchstone. Now, as I watch, the battery is changing % wildly. 100%, 29%, 0%, 67%, back to 100%, 0% again...
Really don't know what's going on. Did not have this happen on CM9. Could really use some help.
Edit: I just threw on a random game while off the touchstone to see what happened. Everything seemed normal, battery ran down to 93%. Exited the game, turned off the screen, and two seconds later it was shutting itself off with 0% battery. Immediately turned it back on, and it shows 93% again.

Did you do a clean install? Does the issue persist after reflashing?

Fresh install, used tptools to wipe and repartition the tablet, no WebOS, CM11 only. Reflashing A6 didn't help.

Still unresolved, possible more problematic.
I rotated my tablet from landscape to portrait and back (while on the touchstone) and it decided to shut itself off.
If anyone knows of/has similar issues (fixable or note), I'd really like to hear about it. Will be disappointed if it's dead, but it's better than spinning my wheels on it for something I can't resolve. If I have to buy a new tablet, I'd like to get it over with.
Edit:
Been a bit since I posted this, but I let the tablet sit for a bit. The battery stats are pretty crazy. Note that I've left it on the touchstone this entire time. I don't get why it's doing what it's doing at all. See newly attached screenshot.

there are 2 possibilities
1. your battery is ****ed, hardware issue, you cant fix unless you replace the battery
2. software issue, but from what you described, seems like you installed properly, so i would suggest to boot into webos (u gonna have to reinstall it), and use it for a few days to see if you get the same problem
- if you do get the same problem, then it's 100% ur battery is ****ed
- if no, then ur cm11 is messed up, try another rom

Ah well. Was hoping I might be able to fix it without any wipes.
I would think if the ROM itself was the issue, others with jcsullins' CM11 would have problems as well. Looks like that's not the case at this point. Perhaps I'll just retired the tablet and get a laptop.
Thanks for the input.

Hi, did you get anywhere with this?
I've got occasional battery percentage glitches on Jcsullins CM11 that I didn't get with the previous WebOS/CM9 setup. See attachment.
Sadly I don't have the time or motivation to launch a huge investigation by flashing ROMs, etc... Looking like I'll just restore WebOS and sell.

At this point, I can't get the thing to boot. I've had it on a charger for a month or two now. I've got the blinking home button. It booted once, but I wasn't in a position to hook it up to a computer and try to wipe it. I've not really put any energy into fixing it since.
I plan on getting it back on the touchstone at some point, and setting it next to my PC. If I ever get it to boot, I'm going to try to get webos back on it first thing, and go from there.

Thanks for the reply. I'm questioning the amount of time I'm spending tinkering with this 3.5 year old device when new tablets are so cheap.
Touchpads are still making a reasonable amount on eBay so sadly I think it's time to just restore webOS and move on. Shame because it runs 4.4 pretty well, at least as good as my Galaxy S3.

[Q] Nook HD won't boot

Hi,
I've owned a B&N Nook HD (7 inch) for just over a year, when I first got it I flashed CWM and CM10 onto it and ever since have had absolutely no issues with it, however a couple of weeks back I was having trouble getting it to charge, it would take a few tries of plugging the cable in before it would finally begin (I'm not sure whether this is related at all to the issue) However a couple of days ago I was happily browsing the internet, then it made a strange "Pop" sound and the screen went completely black. Ever since then it won't boot up, it will briefly display the Nook logo but will then make the same pop sound and go to what looks like a black screen, however under low light you can see that the backlight is still faintly on, and to turn it off you have to hold the power button for 7ish seconds. Also on one attempt to boot it made it past the nook logo, and onto the cm loading screen but then had the same issue. I've also tried booting it to recovery but with no success :crying: .
Any help would be greatly appreciated, even if it's just to say that it's a complete right off.
Thanks

Probably you might have damage battery
bobjohnsonandco said:
Hi,
I've owned a B&N Nook HD (7 inch) for just over a year, when I first got it I flashed CWM and CM10 onto it and ever since have had absolutely no issues with it, however a couple of weeks back I was having trouble getting it to charge, it would take a few tries of plugging the cable in before it would finally begin (I'm not sure whether this is related at all to the issue) However a couple of days ago I was happily browsing the internet, then it made a strange "Pop" sound and the screen went completely black. Ever since then it won't boot up, it will briefly display the Nook logo but will then make the same pop sound and go to what looks like a black screen, however under low light you can see that the backlight is still faintly on, and to turn it off you have to hold the power button for 7ish seconds. Also on one attempt to boot it made it past the nook logo, and onto the cm loading screen but then had the same issue. I've also tried booting it to recovery but with no success :crying: .
Any help would be greatly appreciated, even if it's just to say that it's a complete right off.
Thanks
Click to expand...
Click to collapse
Please watch this tutorial how to remove battery. https://www.youtube.com/watch?v=YfYvhtw30mU.
Then charge your battery via external power source i.e.Master charger. If you still can't turn on your device. Then buy new battery. Link of ebay is http://www.ebay.com/bhp/nook-battery
If it is software issue @leapinlar will surely figure it out.

Thank you very much for your quick response, I'll give the link a try!

Battery Charged
keshabbhattarai126 said:
Please watch this tutorial how to remove battery.
Then charge your battery via external power source i.e.Master charger. If you still can't turn on your device. Then buy new battery. Link of ebay is
If it is software issue @leapinlar will surely figure it out.
Click to expand...
Click to collapse
I had a go at removing the battery, but as I don't have a Master charger or anything like that around, just stuck a multimeter onto the connector, and it read about 3.5v so to me that seems pretty charged.
Does this mean it is a damaged battery, as I'm on a bit of a shoestring budget, so want to make sure I'm getting the right thing
Regards
Bobjohnsonandco

bobjohnsonandco said:
I had a go at removing the battery, but as I don't have a Master charger or anything like that around, just stuck a multimeter onto the connector, and it read about 3.5v so to me that seems pretty charged.
Does this mean it is a damaged battery, as I'm on a bit of a shoestring budget, so want to make sure I'm getting the right thing
Regards
Bobjohnsonandco
Click to expand...
Click to collapse
I've install stable cyanodgen 10.2.1 a year ago and have this issue ever since. Not sure if it's common but whenever the nook is drain completely to dead...when you try charging it..the light would be green..then amber. So I don't know whether its charge or not but I guess it is. I would not be able to power it back on...the normal way. It would seems dead. The way for me to get it to power up is to get into cwm recovery by pressing both the power and home button at the same time, then reboot it. It gets annoying because I would have to do that all the time since my 5 year would drain it out lol

Phone keeps shutting off!!!!

Nexus 6 works for a few minutes then shuts off unless it is plugged. This is crazy. Has anyone heard of such a thing? Phone was working perfectly for 2 months until a few days ago.

qman66 said:
Nexus 6 works for a few minutes then shuts off unless it is plugged. This is crazy. Has anyone heard of such a thing? Phone was working perfectly for 2 months until a few days ago.
Click to expand...
Click to collapse
You mean it's happening for battery or it just force shutdown? If force shutdown then it's a common bug. Or else, it's different issue

Screen just goes black and it's off. Then when I turn it back on it usually makes it to the lock screen and shuts off again

qman66 said:
Screen just goes black and it's off. Then when I turn it back on it usually makes it to the lock screen and shuts off again
Click to expand...
Click to collapse
Does it do this regardless of the charge level? Like it does it even at 100%?

I encountered this with my Nexus 6 last week. Whenever it was below 70% battery the phone would just shut off. Sometimes I could boot back up and use for a little while but soon it'd shut off again. On other occasions it would just think that it doesn't have enough battery to power on at all despite knowing full well it has at least 69%.
Same thing with you, when on AC power it worked fine.
I tried a few things to fix it, factory reset, alternative kernel, re-encrypt + factory reset. None of the above fixed it so I sent it back to Motorola. I'm expecting it back on Monday!
reddit and other android forums have similar posts about "randomly shutting off" so it seems we're not alone.

@qman66,
This post may help you > http://forum.xda-developers.com/nexus-6/help/nexus-6-shutdowns-t2997163/page3

qman66 said:
Nexus 6 works for a few minutes then shuts off unless it is plugged. This is crazy. Has anyone heard of such a thing? Phone was working perfectly for 2 months until a few days ago.
Click to expand...
Click to collapse
i would try clearing the cache of it first and if that does not work flash the factory images you can keep you data by only flashing system then if it still does not work flash all the imgs for data and cache ect if that does not work RMA time. nexus factory images are here:https://developers.google.com/android/nexus/images

qman66 said:
Nexus 6 works for a few minutes then shuts off unless it is plugged. This is crazy. Has anyone heard of such a thing? Phone was working perfectly for 2 months until a few days ago.
Click to expand...
Click to collapse
I just started having the same problem today. Battery is fully charged, then goes to 0 instantly. Wont power up unless you plug it in. Seems to do it more when watching embedded youtube videos in chrome browser.

Phone turns off when not plugged in
qman66 said:
Nexus 6 works for a few minutes then shuts off unless it is plugged. This is crazy. Has anyone heard of such a thing? Phone was working perfectly for 2 months until a few days ago.
Click to expand...
Click to collapse
I have this same issue, I've tried all the "fixes" and different roms/kernals. I don't think this is the same battery issue others have reported. This happens whether I am at 100% battery or 5% and even if I plug it in, start nexus 6 up, unplug it after it's been running./charged for a while, after 30 seconds or so it will just go black and be powered off. It's the same effect if you pulled the power, since its not even going through the standard shutting down procedures like it normally would if it was just low battery.
If anyone has a fix, please let us know! I'm currently deployed so I can't even RMA the thing, had my wife send out my Nexus 5, so I'll switch to that until I get back to the states.

Adnwilson said:
I have this same issue, I've tried all the "fixes" and different roms/kernals. I don't think this is the same battery issue others have reported. This happens whether I am at 100% battery or 5% and even if I plug it in, start nexus 6 up, unplug it after it's been running./charged for a while, after 30 seconds or so it will just go black and be powered off. It's the same effect if you pulled the power, since its not even going through the standard shutting down procedures like it normally would if it was just low battery.
If anyone has a fix, please let us know! I'm currently deployed so I can't even RMA the thing, had my wife send out my Nexus 5, so I'll switch to that until I get back to the states.
Click to expand...
Click to collapse
RMA. Probably related to the battery issues.

Had this exact issues on my nexus 4. Turned out the battery was swollen and damaged. I was told NOT to use it on charge as it could possible blow/leak and get a new one. Like a fool I brought a cheap but supposedly a real replacement but it lasted 2 charging cycles before stopping holding any charge I put in. By this time it had been opened up more times than a crack head whore so I bit the bullet and brought/upgraded to a nexus 6. What a Great phone. but..... Yeah, likely battery issue. FYI I got signal loss moments before it died
Sent from my Nexus 6 using Tapatalk

Power off your phone.Press and hold the Power and Volume Down buttons. This will put the phone in fastboot.Use the Volume buttons to scroll through the menu until you see "Bootloader logs"Press and hold the power key for a long time (7+ seconds) until the phone reboots.

Two (apparently) dead HD Pluses

A month or so ago, my mother told me her Nook HD+ (on which I had installed CM 10.1.3) would not turn on. I told her to plug in the charger for a few hours and try again. Still no go. I will be visiting her in a couple weeks and will see what I can do.
Today I tried to turned on my wife's HD+ (running CM 10.2.1) which had been off for several weeks. It was almost fully charged that last time it was turned off. It would not come on. I plugged in the charger in and no light came on. After a couple hours I held the power button on and after 10-15 seconds the battery symbol came on for 2 or 3 seconds then disappeared. This time the orange charging came on and stayed on so I assume it is charging. I will give it a few more hours before trying again.
What I'm wondering is: why does the battery seem to drain when the device is off, why won't it boot with the charger plugged in (I assume there must be some minimum battery charge required even when plugged in), is this typical of this device?
Any and all ideas or suggestions appreciated.

lmacmil said:
A month or so ago, my mother told me her Nook HD+ (on which I had installed CM 10.1.3) would not turn on. I told her to plug in the charger for a few hours and try again. Still no go. I will be visiting her in a couple weeks and will see what I can do.
Today I tried to turned on my wife's HD+ (running CM 10.2.1) which had been off for several weeks. It was almost fully charged that last time it was turned off. It would not come on. I plugged in the charger in and no light came on. After a couple hours I held the power button on and after 10-15 seconds the battery symbol came on for 2 or 3 seconds then disappeared. This time the orange charging came on and stayed on so I assume it is charging. I will give it a few more hours before trying again.
What I'm wondering is: why does the battery seem to drain when the device is off, why won't it boot with the charger plugged in (I assume there must be some minimum battery charge required even when plugged in), is this typical of this device?
Any and all ideas or suggestions appreciated.
Click to expand...
Click to collapse
When you say off, do you mean completely off or sleeping? If completely off, it should not drain like that. Might be a weak battery.
And yes the power up sequence you described is normal with a dead battery. It must charge a little before turning on.
Tell your mom to try the same thing, holding power button for 15 sec.
If you are going to store it, it is best to have it at about 50% and then turn it completely off.
Sent from my SM-T707V using XDA Premium HD app

Pretty sure my mom just let battery run down. She's 89 so not too attentive to electronic things. I'll make sure it's charged when I see her and try to get it going again.
Also pretty sure (but not 100%) my wife's unit was off-off, not standby-off. At any rate, it booted up after being charged. Updating 19 apps right now. Thanks.
Sent from my BN Nook HD using XDA Free mobile app

This may be late, and sound odd, but humor me if it's not resolved yet. Try to boot it with the SD card removed. My ovation went to doing the same thing, then further to showing false battery levels, and the SD card caused it. Inleqrndnthis by trying the SD card in a spanking new ovation, and my "faulty" ovation then booted, while the new one became problematic. Upon replacement of the now deemed faulty SD card, the problem has not returned.

ieatabiscuit said:
This may be late, and sound odd, but humor me if it's not resolved yet. Try to boot it with the SD card removed.
Click to expand...
Click to collapse
Thanks. I'll be seeing my mom on Friday. Will try this if I can't get it started.
Sent from my Nexus 7 using XDA Free mobile app

Got my mother's Nook started. She just doesn't have enough finger strength to hold the button down for the 15 seconds or so it took to start. I'm going to tell her to leave it on all the time and plug in the charger every night so the battery never runs down to nothing again.
Sent from my Nexus 7 using XDA Free mobile app