yashsingh1/xdaforums huggingface dataset:
[Nexus 10 Q&A, Help & Troubleshooting] BamAlmighty:
Just noticed mine has this problem, can't say when it started since I just noticed it from reading this thread.

I wonder if the people not experiencing this shutdown or reboot regularly. I am willing to bet those of us experiencing this just throw it on the charger and keep it on all the time which might mean this is wide spread.
[Nexus 10 Q&A, Help & Troubleshooting] tcrews:
I'm not experience any time issues and I never shut down my tablet (unless needed because of tweaks, etc..).

Connect to two different networks (home and work), time remains accurate on both. Plug in at night, unplug in the mornings....power always on.
[Nexus 10 Q&A, Help & Troubleshooting] mi7chy:
No problem here with 16GB model over two days in PST time zone.
[Nexus 10 Q&A, Help & Troubleshooting] BamAlmighty:
Did a restart this morning and it auto set to the correct time, but 3 hours later it is 3 minutes behind.

Still debating if I am going to do an exchange.
[Nexus 10 Q&A, Help & Troubleshooting] mi7chy:
What time reference are you guys comparing against? For me against mobile carrier time and all four of my devices are showing the same time.
[Nexus 10 Q&A, Help & Troubleshooting] Valynor:
I reference against (several) radio-controlled "atomic" clocks.

@BamAlmighty

Next time it happens switch off automatic time/date in the settings and set it manually. After that, tick automatic back on. On my N10 it jumps to the wrong time again at once if I do that.

Doesn't sound like hardware to me at all - an electronic quartz clock either works or it doesn't and if it runs slow/fast it always runs slow/fast. Even if the clock was not running precise, toggling automatic time off and on again should correct it to the proper time at least momentarily, which it doesn't -> software bug.
[Nexus 10 Q&A, Help & Troubleshooting] Syk69:
exactly what happens to me.
[Nexus 10 Q&A, Help & Troubleshooting] Valynor:
I might have found a temporary workaround.

If you use the Android clock widgets (either the digital or the analog one) on your homescreen, please try this:

1. with "automatic date&time" ticked ON: do a reboot and verify the system time is correct

2. delete the clock widget from your homescreen

3. restore the clock widget from the app drawer

This has to be repeated after every reboot. Please report back if this helped on your N10, too.
[Nexus 10 Q&A, Help & Troubleshooting] photocycle:
Just want to add that I have two nexus 10s that are having time drift issue as well.... Does Google officially acknowledge this problem yet?
[Nexus 10 Q&A, Help & Troubleshooting] dipzb90:
Started having this issue last night as soon as I click auto update it sets the time incorrectly again

Issue has been acknowledged at least

http://code.google.com/p/android/issues/detail?id=39951
[Nexus 10 Q&A, Help & Troubleshooting] Parodontose:
Mine jumped back to correct time today. It was off by about 15 Minutes the last days, now it is correct again. Let's see what happens tomorrow.
[Nexus 10 Q&A, Help & Troubleshooting] stormricker:
So far (about 48 hours)....my Nexus 10 clock is spot on. Odd.
[Nexus 10 Q&A, Help & Troubleshooting] Parodontose:
So far the bug is gone on my nexus. Time is accurate....at least since three days.
[Nexus 10 Q&A, Help & Troubleshooting] Parodontose:
Update: From my point of view this is a bug with the clock widgets, not the hardware and not directly 4.2 related. I removed any clock widget from my homescreen. After a day or so, the clock was set correctly and stayed correct for three days. After that i added the digital clock widget to the homescreen again and a few hours later I was 10 minutes off again.
[Nexus 10 Q&A, Help & Troubleshooting] m4rk_84:
I have never had a clock widget on the homescreen and I am having this issue. It's a strange one that's for sure...
[Nexus 10 Q&A, Help & Troubleshooting] jonstrong:
Oddly enough I had this issue too for a while but have NOT experienced it in several days since doing a real reboot. For a few days now my Nexus 10 is exactly in sync with Verizon FIOS (as displayed on the set top box) and whatever NTP server my PCs, router, etc are talking to. All my devices have remained in sync for several days. BTW, I still have HD clock and weather widgets on my lock screen and home screen.

beamed from my Nexus 10, far, far away...
[Nexus 10 Q&A, Help & Troubleshooting] aalin13:
Has this issue been resolved yet? I just got a nexus 10 last week, running 4.2.2 and I'm also having issues where the time would slow down on the device. What is more concerning is that the slow down occurs even with automatic time update is turned off. I had the time set correctly before bed last night and had the auto update turned off. This morning after 8 hours on WiFi it is showing 3 min slower than my phone. I don't understand what's happening here, as my phone even when in flight mode will keep the time correctly. Even a $30 Casio watch will keep the time better. Any ideas? Thanks!
[Nexus 10 Q&A, Help & Troubleshooting] BinaryTB:
I wish, exact same problem, auto or non-auto. I've starred the Google code issue, that's all we can do right now. You could root and install the NTP app, I don't want to do that myself.
[Nexus 10 Q&A, Help & Troubleshooting] aalin13:
What I don't understand is, if it is a software bug, why does it seem to only affect a small % of devices? Could there be an issue with the SOC or GPS chip for a small % of devices? Or is it a software bug that only certain combination of unlikely events will trigger it?

I'm quite baffled to be honest
[Nexus 10 Q&A, Help & Troubleshooting] i_dont_know_2:
noticed that mine seems to be loosing time during times of low power.

if i set the time some where close to the real time, reboot, then enable auto time, then it sets its clock (via ntp?), and there are no problems.

if i keep it charged then again no problems.

if i let the power drain, and leave it sleeping for a number of hours, then the time drifts.

this might suggest a hardware issue, where not enough power is getting to the time chip/circuits/magic.

(i havnt done conclusive tests for this, its more of a hunch! :)

a work around might be to always keep wifi on, if it uses ntp or another time syncing service, keeping wifi on will allow the service to keep the time synced/sunk.

does this make sense, or am i barking in the wrong forrest?

does anybody know what logs i should look in for time syncing errors?
[Nexus 10 Q&A, Help & Troubleshooting] aalin13:
So I got tired of the time keeping issue and decided to reset my device on Monday night at 10pm. After the factory reset, I installed back all the apps, did not change any settings, enabled Google Now, got GPS locked once with Google Maps, checked the time is correctly synced via wifi then went to bed.

Since then, I have had the tablet connected to wifi overnight twice, no wifi during day time for all of Tuesday, and it is still keeping time correctly after 34 hours (as of 6am this morning)

This suggests to me it might be a software bug, and it is one that is so unique where only certain condition will trigger it. Of course, I'm completely baffled by it, as it doesn't seem to be easily reproducible
[Nexus 10 Q&A, Help & Troubleshooting] alan sh:
Mine does this occasionally and seems to be related to location access being on. Each time it happens, I turn off LA and reboot. This time, it was running about 20 minutes slow so I turned off LA and started to reboot. But now I have a big clock widget on the main screen. As it was shutting down, the time went from 7:00 to 7:20 (the right time).

So, somewhere in there, it DOES know what the right time is. It's just the display goes off for some reason.

Does this give anyone any clues?

Alan
[Nexus 10 Q&A, Help & Troubleshooting] Android001:
I think you guys need to stop zipping around at 0.9C.
[Nexus 10 Q&A, Help & Troubleshooting] aalin13:
What do you mean? Underclocking?

---------- Post added at 08:22 PM ---------- Previous post was at 08:17 PM ----------

Good observation, and I'm thinking you are onto something. I have noticed that whenever I turn the screen on from sleep, the clock will show a slower time for a split second before jumping to the right time. When the time starts to slow down, this doesn't happen, and the clock just persist with the initial wrong time. I'm thinking the same thing as you I think, that there is one internal clock, and one clock that is displayed, it appears that the internal clock is keeping the time correctly, but it doesn't always translate to what is being displayed. I definitely hope this is the case, as it points to a software issue to be the most likely cause of the issue
[Nexus 10 Q&A, Help & Troubleshooting] BinaryTB:
>>What do you mean? Underclocking?

Think he means 90% the speed of light.
[Nexus 10 Q&A, Help & Troubleshooting] aalin13:
Haha, didn't think of that on a tech forum lol. Love it
[Nexus 10 Q&A, Help & Troubleshooting] alan sh:
I don't think it is location access. Mine has been off for days and it still went slow just now. My battery is down to 64%. A reboot brought back the correct time.

Alan
[Nexus 10 Q&A, Help & Troubleshooting] aalin13:
Agreed, location access doesn't do make any difference for me.

Over the last week my N10, the time was tracking well even down to 10% battery for the first 5 days, then on Saturday morning, Chrome had a crash and froze my tablet, I pressed and held down the power button to force a reboot, after the reboot the tablet started losing time again. It lost about 10 minutes over the next 12 hours, but then it stayed at 10 minutes for all of Sunday. Then on Monday mid day, the tablet corrected the time again by itself, and has been tracking fine since (it is Tuesday afternoon now here in Australia)

There appears to be no consistent ways of replicating the time slow down, and seems to happen quite randomly. I can now rule out Location Access, low battery, time widget, as none of the them will consistently replicate the time slow down issue. The random nature of it really bugs me, but I'm still hoping that this is a software issue and can be rectified in future update (I/O is just around the corner). The other side of it I guess is that it doesn't affect my usage of the tablet, as nothing I do on it is time dependent, and the GPS locks fine even with the time being 10 minutes off
[Nexus 10 Q&A, Help & Troubleshooting] alan sh:
I use mine as an alarm clock so having a reasonably accurate time is important to me. I get round it at the moment by rebooting before I go to bed.

Alan
[Nexus 10 Q&A, Help & Troubleshooting] aalin13:
Over the last two weeks, I have had 4 more instances of clock slowing down, and each time it appears to be independent of location access or battery % as I have suggested earlier.

I have a new theory on what's going on, and this is based on the fact that all four clock slow downs occurs after memory leakage is observed. I have noticed that after extended usage with no reboot, there appears to be memory leakage resulting in less than 100MB of free memory, even with only a few apps running. When this occurs, the whole tablet will slow down and will require a reboot to cure it.

Following a reboot, the clock will always slow down for the first few hours, until it reaches a certain (X minutes) minutes behind the correct time. The discrepancy can be anywhere from a few minutes to 10 minutes, but for me, the discrepancy never grew to anything much more than around 10 minutes. The slow down will stop, and the tablet will be consistently behind the correct time by X minutes for a few more hours, before correcting itself and keep the time properly again. It will then track the time properly, through charge/discharge cycles until the memory leakage occurs again, and restarting the whole process.

There are a lot of threads on the internet regarding the memory leakage issue, and most of them are linked to random reboots. Perhaps what we are seeing with the clock slow down is also linked to the memory leakage issue. The fact that this doesn't occur on my Galaxy Nexus also running 4.2.2 has me a bit baffled and seems to suggest that this might not be a 4.2.2 specific issue. People on this group:

https://productforums.google.com/forum/#!msg/mobile/VFYnt7uN9d0/GFnACv1nC0MJ

have suggested the possibility of driver issues that are specific to the Nexus 10, which I'm inclined to believe to be the likely cause, as both the CPU and the GPU used in the Nexus 10 are unique to the Nexus 10, hence not impacting other devices also running 4.2.2.

The other unanswered question is I have noticed in the past where slow down happens when I leave the tablet untouched for an extended period of time, and based on the link above, it appears that it is possible for the memory leakage to result in a random reboot whilst the tablet is in standby, and the reboot will not reset the uptime counter, hence it is possible for the memory leakage to result in a reboot whilst in standby, triggering the clock slow down without the user noticing the process by the ways of checking the uptime counter

Obviously, this is all pure conjecture that I have came up with based on my observation and what I have read on the internet, but it does make the most sense to me. I'm still hopeful that the next update will solve this issue if it is driver specific. I'll continue to observe the time slow down issue on my Nexus 10 and report back if further slow downs are consistent with my theory above
[Nexus 10 Q&A, Help & Troubleshooting] GAda:
Please test this temporary solution and write some feedback...

https://code.google.com/p/android/issues/detail?id=39951#c205

https://code.google.com/p/android/issues/detail?id=39951#c207
[Nexus 10 Q&A, Help & Troubleshooting] Zer0K3wL:
i'm sorry for bumping this but is this bug still un fixed ?
[Nexus 10 Q&A, Help & Troubleshooting] aalin13:
No news at all about this from Google. There hasn't been any software updates either. I'm hoping that the rumoured 4.3 to be announced this week at Google I/O will finally fix this bug
[Nexus 10 Q&A, Help & Troubleshooting] Zer0K3wL:
What you mean 4.3 you mean 5.0 and yeah hope so.

meanwhile gotten full refund on my tablet and accesoires due to many software bugs and a sleep of death

think 4.3 is just spread rumour by sony fanboy's because sony is way behind if 5.0 would come out would cause lot anger.
[Nexus 10 Q&A, Help & Troubleshooting] aalin13:
A lot of sites have reported server logs showing device running 4.3. I think it is likely that Google I/O will see 4.3 JB released, with the 5.0 KLP to be released in November when this year's Nexus phone is released
[Nexus 10 Q&A, Help & Troubleshooting] Zer0K3wL:
will see hopefully 5.0 soon tough or maybe 4.3 is still klp but will find out my nexus 7 just arived.

which is 100% faster smoother then my old xperia tablet s and lag free :D
[Nexus 10 Q&A, Help & Troubleshooting] aalin13:
Hmm, no new Android version...

So have you gone back to a N7 from a N10?
[Nexus 10 Q&A, Help & Troubleshooting] Zer0K3wL:
nah never had a n10 i had xperia tablet s i just was intrested in this issue since this issue also n xperia tablet s.

figure maybe their some fix.
[Nexus 10 Q&A, Help & Troubleshooting] knoxploration:
Same problem here, Google really need to pull their finger out and fix this.
[Nexus 10 Q&A, Help & Troubleshooting] BinaryTB:
Any clue if 4.3 fixed this issue? I haven't received the OTA yet so can't say.
[Nexus 10 Q&A, Help & Troubleshooting] knoxploration:
Seems to have. I'm on 4.3, and my tablet time now matches my phone and laptop.
[Nexus 10 Q&A, Help & Troubleshooting] aalin13:
Since updating to 4.3, my N10 has been up and running for 635 hours (24.5 days) with no clock slow down. No freezing due to lack of RAM either, and I don't see RAM leakage anymore as well. Really happy with the 4.3 update, I was contemplating on selling the N10 and get the N7 2013, but with the 4.3 update fixing the aforementioned issues, I'll be holding onto my N10 as it is a great tablet IMO
[Android Software/Hacking General [Developers Only]] S4ph1r:
ONLY USE THIS TOOL IF YOU HAVE AN JB VERSION (4.1.1)

WE ARE NOT RESPONSIBLE FOR BRICK OR ANY OTHER ERRORS ON YOUR TABLET

=============================================================================================================================

Requirments:

✔ A210 with active USB-Debugging (Settings –> Developer-settings –> Debbuging –> USB-Debugging)

✔ Acer USB Driver for the A210.

=============================================================================================================================

Windows 8?:

=============================================================================================================================

HowTo:

A210-Root.zip

USB-Treiber

Flashable-Root-Zip

Open the shell.bat and type the following commands.

1) Bootloader unlocken (

Needed for root

)

adb reboot-bootloader
fastboot oem unlock
[B][COLOR="Red"]Navigate with Volume Up / Down and unlock![/COLOR][/B]
fastboot reboot

2) Kernel flashen

adb reboot-bootloader
fastboot flash boot insecured_kernel.img
fastboot reboot

3) Recovery flashen

adb reboot-bootloader
fastboot flash recovery cwm_recovery.img
fastboot reboot

4) Install root

Place the Flashable-Root-Zip on your sdcard.
Boot up your Recovery "adb reboot recovery". And flash the zip from the external sdcard!
Reboot now

Now you can install RootChecker (Store) to check root status.

=============================================================================================================================

Back to stock:

1) Remove root

adb shell rm /system/xbin/su

2) Stock Recovery

adb reboot-bootloader
fastboot flash recovery stock_recovery.img
fastboot reboot

3) Stock Kernel

adb reboot-bootloader
fastboot flash boot stock_kernel.img
fastboot reboot

=============================================================================================================================

Credits:

Kernel // Vetzki - CWM-Recovery

TimeTurn // Flashable CWM Zip​
[Android Software/Hacking General [Developers Only]] ura_aktobe:
Hi, I need the Root and the easiest way. how do I get Root :confused:
[Android Software/Hacking General [Developers Only]] S4ph1r:
Just download the Programm, go the the Root Menu

And follow 1 , 2 ,3
[Android Software/Hacking General [Developers Only]] Doctor_23reg:
It will work on acer iconia tab a211? Or only for a210?
[Android Software/Hacking General [Developers Only]] venomfx:
http://global-download.acer.com/Ste...&OS=Android 4.1 Jelly Bean&FS=O02&Category=OS
[Android Software/Hacking General [Developers Only]] S4ph1r:
This is only tested and recommend for use on A210.

There will be no guarantee that it will work on A211.
[Android Software/Hacking General [Developers Only]] schlex2010:
A210 Rooter.exe is no windows32bit application !!

Don't work!
[Android Software/Hacking General [Developers Only]] ura_aktobe:
x64 working
[Android Software/Hacking General [Developers Only]] S4ph1r:
File should be updated :)

adding: tool_a210_4.1.1_root/A210 Rooter x64.exe (deflated 96%)

adding: tool_a210_4.1.1_root/A210 Rooter x86.exe (deflated 96%)
[Android Software/Hacking General [Developers Only]] schlex2010:
On Windows XP SP3 it do not work!

You can't start the exe file.

So make a cmd or bat file or just a working exe file.

I got root etc. without your tool :p
[Android Software/Hacking General [Developers Only]] S4ph1r:
Not hard for you :D

Do you have the .NET Framework?
[Android Software/Hacking General [Developers Only]] goralpm:
Do you have your own tool?:)

Anyway, if I will wont go to JB rooted, first I should beck to original stock, and then make update from acer to get JB, and used tool to root JB?

It is correct way?
[Android Software/Hacking General [Developers Only]] csjjpm:
stupid question

Hi,

if I do this to my JB 4.1.1 Acer Iconia A210 what happens when the next official update comes? Does this interfere?

Thanks

Paul
[Android Software/Hacking General [Developers Only]] riverak2:
My first post; so glad to finally be apart of the community after using it for so long!

Anyway.. I attempted to use this tool to root my own Acer a210, however it gets hung up on "waiting for device..." after selecting step 1.

It seems as if the tool is not recognizing/communicating with my Acer a210. Do I need to download some sort of driver for the tool to recognize my device? The computer I am using has 64-bit windows 7.

On another note, I have stock OTAs for the US T-Mobile HTC Sensation 4G (Gingerbread and ICS). Can I some how submit those to assist others who do not have them?

---------- Post added at 10:14 PM ---------- Previous post was at 09:28 PM ----------

If tablets are anything like my HTC Sensation 4G smartphone; then I believe you would have to manually apply the

update through the stock recovery and not CWM.

Again; if its anything like on my Sensation then not having a stock recovery and/or boot image would cause your a210

to not automatically update.

Of course; I only have experience with my HTC Sensation so I could be totally wrong...
[Android Software/Hacking General [Developers Only]] S4ph1r:
You can flash back Stock Kernel and Recovery.

Try enabling USB-Debugging in the Developer Settings.
[Android Software/Hacking General [Developers Only]] riverak2:
Thank you for the quick reply! I already tried USB debugging, but nothing happens.

Acer has a USB driver available, buts its for the A210 with ICS.

I recently upgraded to JB.

Do you think installing that driver (even though its for ICS) will help the tool communicate with my tablet?
[Android Software/Hacking General [Developers Only]] Doctor_23reg:
S4ph1r

Can you modify your tool for a211? Many people will say thank you so much.

PS. Sorry for my English.
[Android Software/Hacking General [Developers Only]] S4ph1r:
The Kernel for the A211 is different from the A210 one, because of the 3G module.

And the kernel for the a210 was not made by me, but im installing the tools to do that too :)

Btw sry no i can't help yet with A211
[Android Software/Hacking General [Developers Only]] Doctor_23reg:
OK. Thank you. I will wait custom kernel for a211
[Android Software/Hacking General [Developers Only]] riverak2:
After installing the USB driver from Acer and following this post's directions; this tool worked flawlessly!

Thanks so much to those who took their time to create it! =D
[Android Software/Hacking General [Developers Only]] Doctor_23reg:
There is firmware 4.1.1 on my a211 from which can pull kernel to get the root, but I do not know how extract kernel without root

Who know how can i do it?
[Android Software/Hacking General [Developers Only]] vetzki:
Maybe you could just boot in the 210 boot image from post1 (fastboot boot, don't flash!), then you should have a adb root shell and from that you can dd the stock boot image.

Or via cwm recovery (also try booting in it).

I'm not sure but I think this could work, as the 210 boot.img (recovery probably also) works on 211 (without 3g).
[Android Software/Hacking General [Developers Only]] S4ph1r:
It should work, but is not fully tested.
[Android Software/Hacking General [Developers Only]] riverak2:
Is it safe to install busybox after doing this root?
[Android Software/Hacking General [Developers Only]] girobiro:
Help!!

Could someone please help I have done a verry silly thing and tried this on my a110 and have ended up in a boot loop with no access to fastboot or recovery and i don't know what i can do about it!!
[Android Software/Hacking General [Developers Only]] pgsgod:
I been root my a210 an work done. then I install chainfire3d after install driver in chainfire 3d my210 stuck in boot loop .

still can boot to boot loader . How can I fix this condition .thx :laugh: and any one have stock rom of acer a210 pls give me link .
[Android Software/Hacking General [Developers Only]] 4ecTHblu:
Give my please dump 4.1 or system.img
[Android Software/Hacking General [Developers Only]] S4ph1r:
Flash back stock kernel and try installing the full rom from acer.

Look at the Acer Site for the Full Rom and install it.

Maybe it will lock your Bootloader.
[Android Software/Hacking General [Developers Only]] vetzki:
Yes