yashsingh1/xdaforums huggingface dataset:
[Nexus 7 General] ybryany:
So uninstalling clockwork mod didn't help. the only other apps I installed were battery indicator pro and setcpu....
[Nexus 7 General] OptimusComposite:
Ahhh, glad I'm not alone in this issue.

Stock ROM, rooted with ClockworkMod installed. I now have StickMount installed, but I had the problem happen prior to installing it. I generally plug in every night and let it charge using the stock charger + cable. Intermittently, my Nexus 7 will be locked up when I go to use it in the morning. It's not just "shut off" - requires power + volume buttons to restart. Battery is usually at full capacity upon reboot. I rooted right away, so I don't know if it was a problem before rooting. It doesn't seem to have any meaningful effect on other operations of the tablet. Battery life seems the same, performance is the same. Just seems like it's getting locked into a deep sleep for some reason. Very strange.
[Nexus 7 General] ybryany:
I haven't had it shutdown today since I removed battery indicator pro.....
[Nexus 7 General] phonic:
While I am the OP here, and mine had done it 2-3 times when I first bought it, I have only had my unit power off during a charge once in the past few weeks. So I doubt it's a hardware "feature". Seems like a very sporadic bug.
[Nexus 7 General] ybryany:
I wouldn't be surprised if applications are causing some weird state, like a threshold is reached which causes the os to shutdown..... like a memory leak. maybe only certain apps trigger it.
[Nexus 7 General] ybryany:
I've confirmed that reinstalling battery indicator pro brings back my phantom shutdowns. I've contacted the Dev and linked him this thread.
[Nexus 7 General] ybryany:
So it looks like there really are two issues:

1. Random shutdowns

2. Shutdowns while plugged in to the charger over night.

My nexus shutdown last night while on the charger for the first time.....
[Nexus 7 General] dansan382:
i leave my nexus 7 plugged into my desktop computer charging overnight and noticed i come home and its shut off too. i doubt im using the USB cable the nexus 7 came with so that might add to it? My computer doesnt go to sleep or hibernates at all, its on all day and night

i dont think ive had this issue until recently and only 2 things changed as i really dont use my nexus 7 that much.

installed stickmount

installed trinity kernel.

its not a huge deal and i really dont mind it, takes 30 seconds to turn it back on thats all. doesnt shut off while using it or anything. everything else seems fine.
[Nexus 7 General] ybryany:
I never had issues until I installed Trinity. now I still have this issue even after removal of the kernel via restore.
[Nexus 7 General] Elsydeon:
I'm starting to think it's a software issue, related to battery monitoring types of apps. My first Nexus 7 started doing random shut offs on its own when plugged in, and coupled with it having a scratch on the bezel right out of the box + screen lift issue, gave me a good reason to just return it to be safe. After seeing the above post, I avoided installing Battery Monitor Pro on my new one, which I normally install on all my Android devices to get a 1% battery notification icon, and to just see the general health of the battery. So far it's been plugged in for over a day and hasn't rebooted...my last one was shutting down up to 3 times a day previously, and it was not too long after I had installed Battery Monitor Pro on it. The Nexus 7 must not like certain battery monitoring apps or something...this same app installed on my Galaxy Nexus on Jellybean doesn't cause the same problem.
[Nexus 7 General] thedauntlessone:
edited out for false info.
[Nexus 7 General] edge3uk:
I've been getting these issues too. I've uninstalled battery monitor widget, and things seem snappier... I'll have more of a play though. I'm running paranoid android and trinity 64.
[Nexus 7 General] thedauntlessone:
Does anyone have a solution to this? Should I exchange mine?
[Nexus 7 General] ybryany:
Is yours completely stock? nonrooted?
[Nexus 7 General] thedauntlessone:
It's currently running Bugless Beast and Trinity Kernel. Just wondering if there is a specific reason this is happening. Anyway, I've decided to restock my tablet to see if the SOD still happen.

This doesn't seem to be a wide spread issue since this thread is pretty dead.
[Nexus 7 General] ybryany:
I think Trinity caused it for me. even now that I'm stock, I think just installing Trinity might have caused it.
[Nexus 7 General] thedauntlessone:
Pretty sure it's not Trinty kernel, especially if you returned it to stock.
[Nexus 7 General] fozzir:
This is tough for me to read because not only am I having same issues here with shutdown and charging but after it boots it freezes. I have to do a hard shutdown and after a while (4-5 mins) it finally boots. After that it seems to be fine, until I leave it charging again and I start the whole process all over. Google, please fix, my tab is fully stock.
[Nexus 7 General] thedauntlessone:
Hi Fozzir, I think the best way to go for you (since you're stock) is to factory reset the tablet, charge it overnight and see if the problem persists. If so, I think you should return the tablet. I'm doing the same thing.

Again, this doesn't sound like a widespread problem so I doubt it is rom or kernel related. It CAN be app/software related, hence the factory reset. If the problem persists, then you know it is hardware related. I'm doing the same thing, I'm going to flash factory image (since I'm rooted) to isolate the problem.

EDIT: I flashed factory image and I'm charging it while I have dinner + hang out with friends. Will update if I still get SOD.
[Nexus 7 General] Elsydeon:
Just wanted to reconfirm that since I avoided installing Battery Widget Pro onto my 2nd Nexus, I haven't gotten any shut downs, and it's been plugged in for over 2 days straight. Mines is rooted with unlocked bootloader. So it's definitely worth factory resetting and then taking it easy with the app re-installations. People having this issue should try leaving a bone stock Nexus with factory ROM plugged in and see if the problem still crops up, that'd pretty much tell you if it was a hardware problem, which I doubt it is.
[Nexus 7 General] Wraith91:
I've been having this issue for the last couple nights and I had my N7 overclocked to 1.6 GHz on motley's kernel. I lowered the clock speed back down to 1.3 GHz with SetCPU and I'm gonna see if my tablet still shuts down while on the charger overnight (stock cable and charger).
[Nexus 7 General] evonc:
Hmm i think it could be related to the cable. I have noticed that mine shuts off of i use the stick cable, but I've been using the cable that came with RAZR and it had not shut down once. Can someone else confirm/test this out of possible?
[Nexus 7 General] thedauntlessone:
I will test all possibilities. So far, fully charged for a couple hours and still didn't shut down using completely stock factory image. I'm going out for a bit and going to check it out in a few hours if it's still on. I'm going to try and narrow down the problem.

EDIT: After being on the charger for 6 hours and fully charged, the tablet hasn't turned off. The tablet also feels cool to touch. I'm going to re-root and install the same Rom/Kernel I have and see if the problem persists.
[Nexus 7 General] Wraith91:
I just pulled my N7 off of the charger after leaving it on overnight and it had not turned off. Maybe having it overclocked to 1.6 GHz was causing some issues with charging causing it to get too hot. From my experience, at least, as long as you don't push the clock speeds too far, you should be just fine. Over the next couple nights I'm gonna test it out at 1.4 and 1.5 GHz to see if it still turns itself off during the night while on the charger. Has anyone who is having this issue overclocked their N7?
[Nexus 7 General] thedauntlessone:
The N7 is hard locking while in deep sleep, not during heavy load, so overclocking is not the issue. My N7 was even underclocked to 1.1GHZ when it was hard locking.

I suggest anything who has this problem to install factory image. After returning to stock, my tablet didn't hard lock while charging overnight even with a custom rom and kernel. The ONLY thing I did differently is use fastboot to install twrp instead of using 1 click to install cwm.
[Nexus 7 General] Wraith91:
Could anything else be causing my N7 to hard lock? I never had that problem until I set the clock speed at 1.6 GHz. Very strange happenings...
[Nexus 7 General] thedauntlessone:
Are you using CWM or TWRP?
[Nexus 7 General] Wraith91:
I used TWRP for a little while when I first got my N7, but I've been using CWM ever since the official build of CWM Touch was released
[Nexus 7 General] thedauntlessone:
Either way I would try flashing factory reset to see if fixes your SOD. Have to try and isolate the problem. I manually flashed twrp and everything seems to be fine now.
[Nexus 7 General] Wraith91:
I'm gonna keep watching it over the next few nights. If it keeps turning itself off, then I'll factory reset and see if that helps any.
[Nexus 7 General] khaytsus:
Recovery does not matter, it is a completely separate environment.
[Nexus 7 General] evonc:
Again i gave not had the issue once after switching cables. Anyone else with a Motorola based cable please try it with the factory charger to see if it fixes the issue. If you don't have a Motorola based cable, try a different branded cable. it's definitely not a kernel/ROM issue as I've gone thought pretty much all the kernels and a few roms with all exhibiting the same behavior with the factory cable.
[Nexus 7 General] altimax98:
I think your on to something with this. I have tried all roms and kernels as well and even bone stock it would happen from time to time. But using my Motorola Cable it doesnt do it.... the moto cable is thicker
[Nexus 7 General] Elsydeon:
Hmm the OEM USB cable being a weak point could indeed be another possibility...come to think of it, when I got my 2nd Nexus, I didn't even use the OEM cable, as it was too short for me. I went straight to a setup that involved a thick USB extension cable + a much higher quality 3 feet USB cable that has built in ferrite dampeners and gold plated plugs. I had been using the OEM cable on my first Nexus that kept shutting down on its own. The OEM USB cables Asus and Samsung products come with are pretty chintzy and cheap...the ones I've seen come with Motorolas and Sonys are much better built.
[Nexus 7 General] thedauntlessone:
Of course the recovery itself doesn't matter. However, problems can occur when flashing. There were cases of CWM soft bricking the HOX. After flashing factory image and manually install TWRP with fastboot, I haven't had a single problem even with stock cable. I've charged it 4 separate times without the device hard locking.

Anyone who's having trouble with SOD should definitely try a second cable to see if your usb cable is borked.
[Nexus 7 General] mystilleef:
I had this problem too. It turns out the cable and charger I was using wasn't charging the battery properly.

Charging the tablet with the Asus cable and charger fixes the problem for me.

I also read it's not a good idea to use the tablet while it's charging. So if you have to, do it sparingly.
[Nexus 7 General] bipoler:
.......just turn it back on in the morning
[Nexus 7 General] khaytsus:
yeah, that's the fix. Ignore the fact that the battery discharges in this state, at least it did for me the one time it happened.
[Nexus 7 General] jcornpe:
It appears to be some glitch in the temperature reporting. Don't think my device is reaching the boiling point:eek:
[Nexus 7 General] ybryany:
Wow, very hot.... maybe thats why its shutting down?
[Nexus 7 General] ybryany:
The new Trinity kernel is stable enough and I can run battery indicator pro. also like the 1700mhz overclock. =)
[Nexus 7 General] jamesst20:
Hi,

I would say it is a security to prevent battery overcharge? If it is full and in sleep mode at the same time for a long while, it turns off. You could try flashing the factory image and see if it fixes

Edit : ok there is something wrong with your battery temp. The tablet keep draining your battery and your computer keeps giving energy so yeah it might heat? Then turn off to prevent to burn the battery
[Nexus 7 General] zimphishmonger:
You MAY be on the right path. This issue seem to occur for me when Im stress testing, but Ive also had it occur when i was just "sleeping: all night
[Nexus 7 General] marshj05:
I had the issue with the trinity kernel. Restored to original and rooted and no more problems.

Sent from my Nexus 7
[Nexus 7 General] zimphishmonger:
Pretty sure it isnt Trinity, as many users are reporting no issues with Trinity and some are having this issue at stock
[Nexus 7 General] Devhux:
I've seen this twice now. Both times I had to hold down the power button for 10 seconds to reset it.
[Nexus 7 General] khaytsus:
There are nights I plug my N7 in at 75-80% battery because it's been a busy day or such and I just haven't used it much that day.. I personally have only had this sort of happen once, when I was using the wrong charger.. But for me I found it on the bootloader with a charging animation at full brightness and the battery percent much lower than when I plugged it in.. and the device was warm. Not hot, warm.

And beyond that, the charging controller is done at a much lower level than the ROM, it'll charge in the ROM or not. So doubtful "turning off" has anything to do with preventing an overcharge.
[Nexus 7 General] creechitup:
I also found my turned off after leaving it attached to the stock charger (and stock cable) whilst at work.

The history in battery monitor widget (10 min intervals) shows that it seemed to charge normally for 2.5 hours. Then when the battery reached 100%, the temperature suddenly jumped to 144C (from normal temperature of 29C) and it switched off at that time (indicated by missing data records).

Overheating protection perhaps? But i'm slightly concerned that the battery has been damaged by that.

Will see if it happens again.
[Nexus 7 General] khaytsus:
ZERO chance that was a real temperature. Zero. Was it a shutdown from a FALSE temperature reading? Maybe.
[Nexus 7 General] evonc:
Im almost 95% positive its related to the usb cable that the n7 ships with. Switch your cables to a different one and you'll see it doesn't happen. Someone else also tried it in the thread and reported similar findings. Cables shipping with any Moto phones are confirmed fixing it as since switching my cable, I've not had a single restart.
[Nexus 7 General] Devhux:
I'm using a Blackberry charger and have had the issue a few times.
[Nexus 7 General] thedauntlessone:
I've already mentioned this but people seem to like to ignore a possible solution. I had the SOD consistently everytime I charged it. I flashed the factory stock image and never had the SOD again.
[Nexus 7 General] creechitup:
I found a different cable helped too. I also used the nexus charger for a few other USB chargeable things, and saw that it didn't charge them properly until I binned the stock cable.
[Nexus 7 General] clusterchuck:
I've found that switching the cord definitely reduces the chance of rebooting when charging for me, but not 100%. With the stock nexus cord, in one day it shut down three times when charging. With my mytouch 4g cord being used, it shut down once in three days when charging. I wonder what's going on.
[Nexus 7 General] clusterchuck:
Ok I've uninstalled battery widget pro and now I haven't had any shuts down on charge even with the stock USB cord. I'm completely puzzled.
[Nexus 7 General] PhilipL:
Hi

I suspect what is happening is the device remains on while being charged. So even though the screen is off, the Nexus isn't in deep-sleep mode as normal, but awake and functioning, of course the 1/5 low power core will be in use to power consumption is negligible and it doesn't take away from the battery charge. It may do this to monitor the battery charge perhaps, or just because when powered it doesn't need to sleep to save battery power, and can react quicker to anything happening on the USB port, i.e. if connected to a computer while being charged.

If there is problem software on the device, or perhaps a ROM with a bug, that bug has more time to surface while the device is on overnight actively running the operating system.

So perhaps we have:

1) OS crash while being charged, no hardware buttons work as they raise an interrupt which can't be acted on by the hard locked OS, so when you try and turn it on in the morning nothing happens.

2) OS crash while being charged, the OS isn't controlling the charge any more, the battery starts to overcharge and the battery safety device cuts of power hard, this clears the crashed OS from memory, and when you turn it on in the morning it starts up from cold.

The tablet shouldn't be shutting itself down overnight, that isn't by design unless it has to due to some major problem such as overcharging the battery or overheating. What if you had set an alarm for the morning, it isn't going to work is it?

Regards

Phil
[Nexus 7 General] koolliver:
i also suffer from it . but only differnece is that my nexus 7 wont turned it on with volume buttons and power button in recovery . my nexus 7 start after attaching it to charger even if it is 100% full but it take about 15 min. :(

sorry for my bad english..
[Nexus 7 General] joshtb86:
mines turns on all the time after i turn it off, charging or not. no idea what the cause is. posted about it before but no one had any real answers except calendar alerts? but i dont think that was the problem
[Nexus 7 General] clusterchuck:
I've only experimented with this a few days, but before I go to bed I close all multitask windows and force stopped any unnecessary apps. Within these couple of days I haven't had any shut downs with this process. So my theory is that there's some kind of app in plain siting that is causing the nexus 7 to over heat or give the appearance of overheating to the os, making it to shutdown.
[Nexus 7 General] derelict:
The other day my n7 wouldn't wake up and it was NOT plugged in overnight. It kind of reminds me of a SOD problem my Nook Color had with CM7 and CM9. There was a known issue when you left your device idle with Wifi on. Has anyone looked into weather this happens with Wifi left on or left off?
[Nexus 7 General] MyGoku:
I've read the whole thread and I think that I'm not the only one that fins his Nexus 7 off randomly (never while I'm using it, always with the screen off), not necessary while charging.

Any solution? I've tried a factory reset, updating all apps and not installing anything else. If it still turns off I'm going to ask google for a new one...

Thanks.
[Nexus 7 General] joshtb86:
i think were referring to 2 different problems - the orignal post was about the tablet turning on, not turning off.
[Nexus 7 General] fishneverland:
my n7 also turns off randomly

Yup, I experience the randomly turn off problem here...

I've had this device for 2 days by now (purchased on 9/22), and had encountered this problem 4 times!!

My device comes with Jelly Bean 4.1.1 JRO03S build. Wireless is always connected. It turned itself off when I left it on idle (not charging).

I've unlocked and rooted it if this have anything to do with the issue....

this is totally not cool
[Nexus 7 General] Starkerson:
Both me and I my partner have Nexus7s, mines the 16GB version and hers is the 8GB version.

Her Nexus 7 has been turning off at night while on charge and in the morning it is very hot and normally with a low battery level. Looking at the android battery monitor showed the battery level jumping from 100% to 0% (This is as if the tablet was turned off between 100% and 0%, strange). It has not been rooted, has the stock ROM and she is using the charger and cable that came with the tablet.

We are probably going to try a factory reset to see if that helps, I will post again with the results.
[Nexus 7 General] Casanub:
I too experienced this issue last night, I have a Asus wall plug with blackberry cable as it longer. The unit charged then must have turned itself off.... in the morning I used the power button to turn it on and it was at 100% working fine.

My Nexus is rooted with 4.2 jelly and latest Trinity Kernel + Clockwork recovery I also use setcpu.

Lastly I have found that unplugging my OTG cable also causes my Nexus to restart, possibly a completely separate issue but both happened on the same day.

Very strange indeed.
[Nexus 7 General] PookiePrancer:
Mine's done this twice now in the week since upgrading to 4.3. I wish I hadn't.
[Nexus 7 General] htchero123:
I'm having a similar problem too. I just picked my n7 today from best buy and I have yet been able to boot it up successfully. I get to the Google animation and then it just turns off on me. Now I can't even power it on. Haven't even been able to put my info in f'n annoying. Any suggestions?? How can I grab such a dud dobt these things get checked before hand? I mean come on it won't even boot!!
[Nexus 7 General] place name here-:
https://play.google.com/store/apps/details?id=com.sash.sodeliminator

Seams to solve the problem for me.
[Nexus 7 General] PookiePrancer:
I was just reading about that elsewhere. Thanks for reporting the good results. I'll give it a try!
[Samsung Galaxy Tab Plus] andrewferol:
Im currently using CM9 and i was able to successfully flashed it. but my MAIN problem is that i cant connect to my wifi. it will just say "saved" but will never connect. i am thinking of how can i uninstall this rom and go back to the original 3.2 firmware. or is there a way on how to fix my wifi issue? I am loving the ICS feel of my tab but still i cant access the internet.

PLEASE help me! i am still a newbie at this and i would really appreciate your help.

will wait for your kind replies! :)
[Samsung Galaxy Tab Plus] MacZzang:
did you try the wifi hot fix that was posted a couple of hours ago? it worked for me. i have the file but i don't know how to share it with you..?
[Samsung Galaxy Tab Plus] motosuki:
you can download wifi hotfix here
[Samsung Galaxy Tab Plus] vobguy:
The WiFi Hotfix mentioned above:

The link to that hotfix: (oops I see someone beat me to that link now, sorry for the replication)

http://xdaforums.com/attachment.php?attachmentid=1200696&d=1342391263

You may get better advice from the CM9 thread in the dev subforum:

http://xdaforums.com/showthread.php?t=1576553&page=69
[Samsung Galaxy Tab Plus] andrewferol:
Thank you!

Thank you so much! my wifi is now properly working! i really appreciate all the help you've given! :)
[Samsung Galaxy Tab Plus] andrewferol:
Another issue!

I just would like to ask on what google play can i install and do you have the link for it cuz it seems i have been installing alot of google play and its not working at all. i think there is a specific GP for CM9 but i cant find the right one. I can install apps from my browser but i think its not that safe. what would you recommend? thank you in advance! :)
[Samsung Galaxy Tab Plus] k_t_b:
Actually read the CM9 thread, please. All your questions have been answered there.
[Samsung Galaxy Tab Plus] leviathian:
Does this fix work for official ics austria?
[Nexus 7 General] SonicTab:
The Nexus 7 wifi connection hangs and disconnects with some routers / settings.

Connected to a Linksys e4200 v1 lan video streaming, slingbox streaming, and large file transfers hang after 2-4 minutes. Other Android devices connect fine.

Connected to a DLink dir-655 all is fine with the Nexus 7 and other devices.

To test I copied a 500MB mp4 file from my lan server to the N7.

On the e4200 the transfer hangs after 20+%, on the dir655 it completes as expected.

Anyone else notice something like this?
[Nexus 7 General] phonic:
I haven't had any wifi issues on mine. I'm using a different wifi AP at home though.
[Nexus 7 General] OliverHaslam:
I find the WiFi connection keeps disconnecting on mine, too.
[Nexus 7 General] hoponpop:
you should try changing the channel your router uses. I had the same issue with my phone/everything that uses wifi, and changing the channel to something less used fixed it all up