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Cause of random reboots (P6210)?

I have been reporting the "random reboot during standby" problem in the following thread. http://forum.xda-developers.com/showthread.php?t=1386785
However, the thread was mainly about Screen of Death, and I have not experienced any SOD at all, I think it is better to start a new thread.
Here's the details - on Monday afternoon I purchased my P6210 (brand new, sealed). Started setting it up Monday evening. On Tuesday morning I rooted it, and in the afternoon applied the permission hack to allow writing on external SD.
Wednesday morning, I noticed the first random reboot during standby (on AC) as it woke me up. During the day, the reboot happened at least 3 more times (either on AC or battery).
In the afternoon (still Wednesday), I did a security wipe, and stayed with mainly stock apps. I only installed K-9, a file explorer and few other apps that did not require root as I Superuser was not installed. However, it remained rooted, and the SD write permission mod was not removed by security wipe.
Regardless of the wipe, reboots continued for at least 3 more times by Thursday morning. This is when I returned it to the store for an exchange.
=======
Now unit #2 - no rooting, no permission mod.
I did reinstalled all the apps I had as before, with the exception of the ones requiring root.
The result? Not a single random reboot in the last 1.5 day.
****************
The question is, what actually caused the problem. I see three possibilities:
- faulty hardware in the first unit;
- the rooting; or
- the permission mod. (Note: I didn't recall seeing the reboot until Day 3, after I did the mods)
Unfortunately, I don't know what was actually involved in the rooting, nor the permission mod. Are there any remote possibilities that they could cause the random reboot?

I spoke too soon, just had my 1st random reboot on the new unit. It still hasn't been rooted or modded, only running legit apps downloaded from Play Store. So I guess whatever causing the reboot happens out of the box...

[Update] After having two random reboots in one afternoon, I deleted the last couple apps I installed. It has been reboot-free in the last 2 days!!
One of these apps that I deleted was Dell Voice (may be it doesn't play well with my wifi only tab).

ikeny said:
I have been reporting the "random reboot during standby" problem in the following thread. http://forum.xda-developers.com/showthread.php?t=1386785
However, the thread was mainly about Screen of Death, and I have not experienced any SOD at all, I think it is better to start a new thread.
Here's the details - on Monday afternoon I purchased my P6210 (brand new, sealed). Started setting it up Monday evening. On Tuesday morning I rooted it, and in the afternoon applied the permission hack to allow writing on external SD.
Wednesday morning, I noticed the first random reboot during standby (on AC) as it woke me up. During the day, the reboot happened at least 3 more times (either on AC or battery).
In the afternoon (still Wednesday), I did a security wipe, and stayed with mainly stock apps. I only installed K-9, a file explorer and few other apps that did not require root as I Superuser was not installed. However, it remained rooted, and the SD write permission mod was not removed by security wipe.
Regardless of the wipe, reboots continued for at least 3 more times by Thursday morning. This is when I returned it to the store for an exchange.
=======
Now unit #2 - no rooting, no permission mod.
I did reinstalled all the apps I had as before, with the exception of the ones requiring root.
The result? Not a single random reboot in the last 1.5 day.
****************
The question is, what actually caused the problem. I see three possibilities:
- faulty hardware in the first unit;
- the rooting; or
- the permission mod. (Note: I didn't recall seeing the reboot until Day 3, after I did the mods)
Unfortunately, I don't know what was actually involved in the rooting, nor the permission mod. Are there any remote possibilities that they could cause the random reboot?
Click to expand...
Click to collapse
I had the same problem with mine when I rooted it. I keeped getting reboots so I unrooted it and now I'm just running sock and it been fine ever since, I've had the tab since it was released... I,ve made up my mine not to do and hacks on mine till ICS is out and everything is stable
Sent from my GT-P6210 using xda premium

ikeny said:
[Update] After having two random reboots in one afternoon, I deleted the last couple apps I installed. It has been reboot-free in the last 2 days!!
One of these apps that I deleted was Dell Voice (may be it doesn't play well with my wifi only tab).
Click to expand...
Click to collapse
I'm curious. What were the other apps you uninstalled?

wolverine38812 said:
I had the same problem with mine when I rooted it. I keeped getting reboots so I unrooted it and now I'm just running sock and it been fine ever since, I've had the tab since it was released... I,ve made up my mine not to do and hacks on mine till ICS is out and everything is stable
Sent from my GT-P6210 using xda premium
Click to expand...
Click to collapse
Just to clarify, I haven't rooted my tab to date. In my case, I definitely have the reboot issue without root. In your case, would it be the apps you installed after you rooted, rather than just the rooting itself?
k_t_b said:
I'm curious. What were the other apps you uninstalled?
Click to expand...
Click to collapse
Google goggles. I'm guessing it wasn't the cause of problem.

I don't really know what caused it to reboot but it has'nt done it since i went back to stock. I don't think it was the apps cuz the only other app that I dont have on my tab now ,when it was rooted is the app that changes the screen density [ I don't remember what it was called]... I also used titanium backup when I had it rooted but I know its not that app cuz I still have it installed
Sent from my GT-P6210 using xda premium

It's probably irrelevant, but I found that if I increased the screen density to 180dpi (probably anything over 160?) using the DPI Changer Utility app, then the tablet would boot to the homescreen and then reboot, over and over.

wolverine38812 said:
I don't really know what caused it to reboot but it has'nt done it since i went back to stock.
Click to expand...
Click to collapse
I also concern that rooting may contribute to the random reboot. I wouldn't mind to experiment it, but I don't know how to completely remove root if I need to.
FYI, I have the Canadian LB2 firmware, and it is not available online for me to flash it to the tablet using Odin.
Could you share with me how you did the unrooting (reverting to stock ROM)?

Well to throw a wrench into the mix I have my Tab Plus rooted and I don't get random reboots on LA3 firmware.

Zadeis said:
Well to throw a wrench into the mix I have my Tab Plus rooted and I don't get random reboots on LA3 firmware.
Click to expand...
Click to collapse
P6200 or P6210?
It seems to crash when apps cannot access the network during standby, and that's why some are fixing the issue by installing the Auto Airport Mode app.
Hence, having 3G or not may make a difference.

I have a 6210 so no 3G for me.

Zadeis said:
I have a 6210 so no 3G for me.
Click to expand...
Click to collapse
Thanks, I'll definitely try rooting, as soon as I learn how to unroot first.
PS. Do you have Titanium Backup, or did you change the display density? (These are the other suspects that could cause the reboots in wolverine's case)

I use rom toolbox for freezing apps and other things so no I don't have titanium backup.
I have changed the density before (also using rom toolbox) and didn't like the results and went back. So for me it is still at the normal 160.
I hope I am being of some help here!

ikeny said:
Could you share with me how you did the unrooting (reverting to stock ROM)?
Click to expand...
Click to collapse
When I did the update to LA3 it unrooted mine but this should work just as well:
1. Download a file explorer, allow root acess, mount as r/w
2. Go to system/bin
3. Find SU file and delete it
4. Reboot
I didn't do it this way but it should work, do it at your own risk. I am not responsible if something happens to your tablet
Sent from my GT-P6210 using xda premium

wolverine38812 said:
When I did the update to LA3 it unrooted mine but this should work just as well:
1. Download a file explorer, allow root acess, mount as r/w
2. Go to system/bin
3. Find SU file and delete it
4. Reboot
I didn't do it this way but it should work, do it at your own risk. I am not responsible if something happens to your tablet
Sent from my GT-P6210 using xda premium
Click to expand...
Click to collapse
I too, prefer to unroot by flashing a factory image with Odin. The problem is, I have a Canadian P6210 (w/o IR port) with LB2. Until LB2 factory image is released (or something newer), I don't think I'll root my tab. It has been running rock-solid without any reboot for the last few days, I don't want to risk losing it by rooting.

Update - still not rooted and running only apps installed from Play store, it suffers from random reboots. Sometimes once or twice in one days, other times no problem in days. No obvious patterns noted.
By the way, also have one SOD in about 2 weeks that I own this tab
A quick Google search shows that this problem is reported on many models of galaxy tabs (7.7, 10.1, ...)

I've had my 6210 for a month without issue then it stared sod and reboot with great frequency. I read about a few solutions but I couldn't understand why it would start happening without me making setup changes (unless hardware failed or a write failure corrupted something). I decided to reboot in recovery to clear the cache. Its been two days without a problem. I have no idea how long it will last but it's working for now...
Sent from my GT-P6210 using Tapatalk

I'm on LA3 as well, I've never experienced this problem. Maybe there is some common denominator here, like manufacture date etc.

Possible to unroot?

I have rooted my phone but not unlocked the bootloader and it seems my phone just slightly more sluggish than before. I noticed nova is now taking a few seconds to reload and it never used to do this. The phone just doesn't seem as responsive as before I rooted. Has anyone else experienced this? Or is it just me being paranoid.
Sent from my HTC One X using xda premium

Just flash the ATT RUU. Im using the Rogers one and dont notice this.

yeah just flash the RUU I did have this kind of issue the first time I've rooted the phone maybe I've made a mistake ... anyway after a fresh flashing with my Original "rogers" RUU and rooting it again everything was fine !
Good Luck

JamesR913 said:
I have rooted my phone but not unlocked the bootloader and it seems my phone just slightly more sluggish than before. I noticed nova is now taking a few seconds to reload and it never used to do this. The phone just doesn't seem as responsive as before I rooted. Has anyone else experienced this? Or is it just me being paranoid.
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
Before you RUU, have you tried just doing a reboot? (holding the power button until the phone reboots). I noticed that this phone may get sluggish without rebooting for a while. I'd also install a task manager program to see if any apps are hogging cpu.
Cheers,

Is this any different than turning it off (fastboot off) then back on again?

Different problem but similar topic.
I rooted my phone using the one click utility with no problem.
Today, I installed script manager to run a script for the V6 Supercharger mod. Everything installed fine until the very end, at the end of the installation, I received a message that Script manager has stopped working. I then closed it.
Now I'm trying to run a different script, as su, but I receive a "permission denied" message. I entered su into terminal and get the same message, "permission denied".
This led me to believe that I lost root. I tried running the one click utility again but received an error (I don't remember what it was sorry). EDIT : The error is: "protocol fault <no status>"
EDIT 2: I'm also unable to update the SuperSU binary. I only get "Installation Failed".
What is going on here? Did I just lose root?

Can't copy/paste?

I've tried to clear the cache, do a battery pull, restart my phone and nothing seems to work. Trying to copy anything from any app will make it not respond and yields in a force close. Anyone know what I should do?

blu3poptart said:
I've tried to clear the cache, do a battery pull, restart my phone and nothing seems to work. Trying to copy anything from any app will make it not respond and yields in a force close. Anyone know what I should do?
Click to expand...
Click to collapse
You have to tell us, what rom you are using? rooted? Did you freeze any system apps?

I have the same problem. My phone is not rooted
Sent from my SCH-I535 using xda premium

Stock, not rooted (no ROMs are stable enough for me yet..mainly CM and AOKP) and I updated to the new ota

I forget exactly what causes it, but a factory reset is one of the only ways to fix it.

With all the work that goes into installing all the apps and stuff, Id rather root my phone xP

Here's a post that describes one method of fixing the issue, if you are rooted, by deleting all of the files in "/data/clipboard/". It also mentions clearing the data in the "TestService" app, but not everyone seems to have to do that step to fix it.
forums.androidcentral.com/verizon-galaxy-s-iii/195268-problems-cut-paste.html#post2026777

Thank you kindly sir!

[Q] Htc Evo 4G LTE Jellybean crashing super su

Hello all i just did the 3.15.651.16 update from viper boy and everything was good until i tried to update Su binary in Supersu.. it crashes the phone completely off and restarts every time.. i have tried updating busybox with no success.. anyone have any ideas on what this could be? I have done a full wipe x3 and a few rom installs and all do the same thing.. thanks in advance!

I'm actually getting the same thing. Not sure why but I tried with SuperSU and Superuser and it happened with both. I'm wondering if this is HTC's doing.....
Oh also, you might want to move this to the Evo forum because I only found this from Google and wouldn't have browsed this section of XDA for this issue.
Sent from my HTC Evo 4G LTE using Tapatalk

Morenicano said:
I'm actually getting the same thing. Not sure why but I tried with SuperSU and Superuser and it happened with both. I'm wondering if this is HTC's doing.....
Oh also, you might want to move this to the Evo forum because I only found this from Google and wouldn't have browsed this section of XDA for this issue.
Sent from my HTC Evo 4G LTE using Tapatalk
Click to expand...
Click to collapse
Yeah I know i posted wrong lol.. I also noticed that whatever you do in /system say edit the build.prop always resets at boot as if the file system is a read only.. also can you see if your Navigation crashed.. youd have to be in a car moving but mine crashes bad

Sure I can check. I also noticed that anytime Titanium Backup runs a batch backup job it causes the phone to restart almost immediately
I'm really surprised this isn't all over the place. We can't be the only ones having this issue....

Morenicano said:
Sure I can check. I also noticed that anytime Titanium Backup runs a batch backup job it causes the phone to restart almost immediately
I'm really surprised this isn't all over the place. We can't be the only ones having this issue....
Click to expand...
Click to collapse
Any update on this? same thing happening to me, installed CWM-SuperSU-v0.99 and still see the instant reboots..

Seek Alternatives
Give the MeanBean ROM by mikeyxda a try! Its great and reliable, worst case if you perform a hard reset flash MeanBean you can go back to your other ROM if you don't like it. At least will let you know if the issues lies in your existing ROM or not. You may even be able to perform a dirty flash back to your present ROM and that could retain the SuperSu from MeanBean.. Hope this helps.
If it did help feel free to hit my thanks button!!

I forgot to check but now when I do it, the phone doesn't restart--it now just says it failed to install the binaries. The phone is still rooted but I guess I can't use advanced features. I still think there's an issue in the /system directory because I can't get Titanium Backup to remove system apps (apps integrated into the ROM).
Sent from my Galaxy Note 10.1 using Tapatalk HD

Morenicano said:
I forgot to check but now when I do it, the phone doesn't restart--it now just says it failed to install the binaries. The phone is still rooted but I guess I can't use advanced features. I still think there's an issue in the /system directory because I can't get Titanium Backup to remove system apps (apps integrated into the ROM).
Sent from my Galaxy Note 10.1 using Tapatalk HD
Click to expand...
Click to collapse
I'm having the exact same issue...still trolling about to find a fix.

http://forum.xda-developers.com/showthread.php?t=2059281
Check here for the kernel fix for the /system issue, installed the new kernel and it works great!

I'm having random reboots.

Hi,
I'm having trouble with my OpO since I rootet it. Here is the history:
-Day One: Just stock 25R, installed all Apps via google play, no problems whatsoever.
-Update 30O still no problems.
-Then I rootet the phone and flashed TWRP recovery to install the Titanium Backups of my old Nexus 4. Thats when I had the first random reboots. Some while Browsing in Chrome, Some on Youtube, Some while listening Music on Hedphones.
Since I have no Sim-Pincode activated a reboot just means, that I'm Offline for about 20 seconds but having that about 5 times a day just isn't acceptable.
-Then I got the 33R OTA update, which made my root and TWRP recovery disappear because I forgot to make a check in the developper settings, but that did not make the reboots disappear
-Today I flashed the 25R stock Image of the Firmware via Fastboot to set my One to real Factory status. I only installed apps via google play and recovered the app data of 2-3 apps via helium backup without root. I got the two OTA updates, and another reboot.
-Then I rootet the thing again, to use a logcat app, and now I have two logcats ending with a reboot.
I really hope that you can help me since I allready sold my old phone and expect that it will take really long until I get a new OpO here in Germany.
The next thing I will do is flash the 25R Image again and install the apps without using helium at all and leave out the goolors icon pack that I used before. But after that I'm absolutely out of ideas.
UPDATE: Yeah so it's definitely a HW defekt or something I cannot solve. I just wiped everything via TWRP, then flashed the factory image 25R without root and just installed some apps via google play. But after one hour I read an email and it rebooted....
Unfortunately I cant post the links to the logcats due to my low post count.

Logcats don't help you when it comes to finding out what is causing your phone to reboot. It is last_kmsg that is responsible for debugging reboots.
A hardware defect would not be causing your phone to reboot, its something to do with the way your phone is configured / set up.
I would highly recommend you to start from scratch completely and do the following,
- Flash XNPH33R http://dist01.slc.cyngn.com/factory/bacon/cm-11.0-XNPH33R-bacon-signed-fastboot.zip from scratch. Make sure you do wipe.
(OR.. flash a custom ROM after wiping)
- List all of the apps that you currently have installed.
- Are you using Xposed?
- Whats your set up? ROM/Kernel/Gapps/etc.

I am not using any custom Rom, root, custom kernel or xposed module.
I just wiped everything in TWRP and flashed the 25R factory image. After about one hour of installing apps in Google play and loging into account i got the first reboot.
I can try flashing the image that you postet tomorrow but thats the same Rom that Im using now

Ord3r66 said:
I am not using any custom Rom, root, custom kernel or xposed module.
I just wiped everything in TWRP and flashed the 25R factory image. After about one hour of installing apps in Google play and loging into account i got the first reboot.
I can try flashing the image that you postet tomorrow but thats the same Rom that Im using now
Click to expand...
Click to collapse
I meant, you can try a custom ROM and see if you can reproduce the problem. Custom ROMs are running on code that is much newer than CM11S.
Ensure you're on XNPH33R when it comes to OTAs.

I just wanted to add my frightful experience. I've had the OPO for two weeks now without problems and no random reboots. Had my first reboot today and just now my phone powered off and wouldn't turn back on. I plugged it back into the wall charger and it turned itself back on but was stuck on the boot logo. I tried holding down the power button to turn it off but nothing. Pressing the power button only turned the display on and off but still stuck on boot logo. Eventually I held down the power button and volume down and the phone buzzed and went to recovery. I'm on stock 33R and Franco's kernel. Haven't tweaked anything. Now I'm afraid my phone is going to brick itself.
Sent from my A0001

Yeah so this is definitely getting worse. At first I had 1-2 reboots a day but today after unplugging I already had 3 reboots in one hour.
I think I am definitely going to send it back when I'm back home next Week.
I already flashed stock Firmware 3 times and did what feels like 10 full wipes in one Week.
This cant be normal. Apps that I installed that arent in the top 50 in the play store are: Dailyme, yatse for xbmc, line, Wolfram aplha and ogyoutube.
That really sucks. I already sold my nexus 4 and have no other phone left
Btw: I'm on 33R for the third time this Werk. Everytime via OTA

Try a different Rom like crDroid + AK Kernel. Running this 2 things since 2 weeks and i only got one reboot just because my camera stopped working because in undervolted my phone ^^

THX but I just want a functioning phone. And since I have errors that nobody else has I think that it is a Hardware issue. At the Moment I am waiting for a answer from one plus so i can send it back

Ord3r66 said:
THX but I just want a functioning phone. And since I have errors that nobody else has I think that it is a Hardware issue. At the Moment I am waiting for a answer from one plus so i can send it back
Click to expand...
Click to collapse
ok I understand your frustration but to fully test your phone you will need to run stock and stock only with no outside apps loaded. Try and do this for a day or half a day or so and see what your results may be. Its your phone and of course do what you like but testing your phone and doing the same thing every time as in reloading your apps is not a good way of fully testing.
also did you do a last_kmsg report as recommended.

Okay will do that. Is there a tutorial to do a last_kmsg report? Do i need root?

Ord3r66 said:
Okay will do that. Is there a tutorial to do a last_kmsg report? Do i need root?
Click to expand...
Click to collapse
Yes you need root. After a reboot just pull the last_kmsg file from /proc/ using adb, file Explorer of your choice, etc.
Sent from my One A0001 using Tapatalk

Ord3r66 said:
Okay will do that. Is there a tutorial to do a last_kmsg report? Do i need root?
Click to expand...
Click to collapse
of course there is a tutorial there is a tutorial for everything.... Got to utilize google my friend.

OKay it's me again. Meanwhile the Oneplus support answered my mails and told me to flash custom Kernels to resolve the issue.
Since Yesterday I tried three Kernels (Franco, Heeroluca and AK) and nothing changed, so now I start to gather some Last_kmsg files name it after the APP where the reboot occured and upload it here. Ofcourse I'm also sending those files to the Oneplus Support
Here is the first one:
https://dl.dropboxusercontent.com/u/43103242/1_Line_Messenger_last_kmsg
https://dl.dropboxusercontent.com/u/43103242/2_standby_screenoff_last_kmsg

Have the same problem. Using wi-fi -> reboot. Don't know how to fix this defect. I hope a solution will be found

Had a random reboot while browsing chrome. I was scrolling down the page and received a text at the same time when my screen froze. After freezing for a few seconds, it rebooted itself. I tried getting the last_kmsg but it tells me that it isn't found. The code I used was: "su" followed with "cat /proc/last_kmsg > /sdcard/last_kmsg.txt" in terminal emulator. Let me know if there is anything else I can do. Thanks!

I have also problems with chome beta browser. I get freezes. Is this issus only with chrome or with all browers?
Gesendet von meinem A0001 mit Tapatalk