yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] torakun:
I don't have the problem but if I can maybe suggest, have you reset the device back into factory setting?
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] EarlZ:
Your not the first one to ask this nor your alone, this also happens with the Galaxy Note with some users, I've never been able to pinpoint the cause for this on the note.. I'll see if it happens on my Tab7.7 when I get it tomorrow.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] lulugirl896:
Do you by any chance have a sim card inserted? I noticed yesterday as I was working with AT&T to get my device set up that each time I had to take my sim card out (to give them the serial number) the Tab would reboot on its own.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] adinis78:
I have had 2 reboots since getting my tab, very weird.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] EarlZ:
We need more people to chime in and see how wide spread this issue is, it could be cause by a very aggressive deep sleep state that is used by samsung?
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] Peahnuts:
I thought that factory resetting it would help but as far as I can tell it hasn't. I tried that about a week ago but am willing to give it another shot if someone proves me wrong. Thanks for the input though.

I have the wifi version so I don't have a sim slot. Sorry for not being more specific in the opening. Although I remember someone else mentioning that their sim may have been the problem. Thanks anyway.

Maybe something with the processor, they're relatively similar aren't they? Anyway hopefully I didn't discourage you from your tab, it's still one of the best pieces of tech. Lets hope this problem isn't that widespread and if it is lets hope for a patch or something, maybe with the ICS update hehe.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] brucewilsonpa:
Have had my GT-P6800 for about a month and I have had several random reboots -- since the reboot is complete and I end up where I was I cannot determine what's behind it.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] TRF-Inferno:
Haven't had reboots, but I've ran into issues with it turning itself off at least once a week. Currently on LA2 firmware.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] omidkosari:
I had about 4-5 reboots in a week . don't remember details .
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] jabbermacy:
Is everyone using 3G card that are having reboots? I did NOT have any reboots until getting a 3G card this weekend. It JUST did it. Also, I notice if it's on charger (not USB) that when it's full it will more likely reboot. That's my $.02.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] copualt3:
My 7.7 p6800 has not exhibited any reboot. I am on KL1..but it has prompted me to update...

Please post

7.7 model wifi or 3g

Baseband Version

reboot yes or no

Sent from my SAMSUNG-SGH-I717
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] EarlZ:
I just got my Tab7.7 but I do not have a spare simcard yet to test if its causing the issue but I will update this post for any findings

P6800

16GB 3G+WIFI

DXLA2 - Kernel Build Date Jan 2012

1 Sleep of death so far, watched a movie but locked the device to take a phone call from another phone. Had it in flight mode but wifi enabled.. so thats about 24hrs from initial power up.. I also performed a factory reset before using the Tab.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] ThE_SoUrCe:
yep, my tab prompted me to update as well, I it yes, it downloaded something over wifi, then it rebooted, then it goes to recovery and installed the new stuffs, then said "failed" lol

I only have one crash that is when I used the cam then hurriedly hit back several times, then it froze and rebooted, that's the only time it did it
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] Peahnuts:
I've structured the OP a bit better hopefully. I've provided my details and asked people for theirs.

Going to go look for who to complain to now lol.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] EarlZ:
No reboots yet but I did see it wake up to the lock screen while it was sitting on my desk, I have it in flight mode if it matters. It was actually spooky..
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] EarlZ:
Ok I just had the sleep of death on my Tab7.7

Airplane mode but wifi is enabled, the last thing that I was doing was watching a movie and locked the tablet to take a phone call on my other phone. No SIMcard inserted only a 32GB microSD card.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] wujae:
Hi all.

Got my tab 7.7 3G about 3 weeks ago. Rooted on day 2 (this is my 4th droid so pretty confident doing so.... but...) using the simple root method posted somewhere here in XDA.

Not sure if this is related to the rooting, but I've had about 6-8 reboots, several shutdowns and one really strange rebooting which led to the tab unresponsive to anything (only showed the samsung name logo). I was about to factory reset again (I did about a week ago but only because I forgot to reboot after I rooted) when the tab suddenly woke up and started booting normally.

Normally until apps started loading and for almost all the apps, errors of some kind started popping up.

Since I had control again, I factory-resetted the tab.

Since then, I've had no reboots or shutdowns. I do not know why.

Other strange quirks - sometimes, when waking the device with a quick push of the power switch, the screen does this strange graphic swirly thing (almost seems like a graphic image gone mad while loading) and then loads the proper graphic/lock screen.

Sometimes too, when changing orientation, the graphic seems to lag behind the action. Not all the time though. I use Go Launcher as my default but I've noticed the TW screen do the same thing when I change orientation.

As far as Go launcher is concerned (I use it as well on my GS2), only the dock seems to have a problem - when flicking from one dock to another, the next dock does not 'center'.

So far I am a bit disappointed and hoping (hugely) that ICS releases this tab to its dual core, SAmoled glory.

Edit - if I were to say which was the biggest disappointment, that would be the media rescan. When I have a new photo or image, the image does not appear right away in Gallery. When I try to use the music player, the player will not load (rescanning) but the image appears in gallery after.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] Peahnuts:
Hm, mines rooted too. I wonder if that affects how often you get a reboot/shut-down? Still, it better get fixed with an update.

Btw, don't use this tablet as an alarm. I woke up half an hour late to find that the tab was off. I turned it on and the battery was at 60% so it definitely wasn't the battery running out. Maaan was I late for school lol.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] halabeno:
tab 7.7

I have the same problem especially when watching the movie or downing torrents after the screen shutdown especially when the battery over 50%. when I want to switch on the screen, the tab will not response until long press on power button switch on with galaxy tab 7.7 screen. that means it was shut off !
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] 九千.:
I think what people previously experience is an old issue, but I do experience exactly the same problem as yours when I'm watching movie and accidentally pressing the power button twice (I was intending to press the volume button...their position are damn confusing). The screen flashed with color strips and then the device went off.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] billy_overheat:
I was using tweaked v3 and experienced lots shutdowns and colour strips. Not less than 10 times. Decided to wipe everything and start a fresh install. Well, everything goes well now. Couldn't check the error at all since it was a complete shut down. :(
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] 九千.:
Mine wasn't tweaked at all, just rooted. What is the apparent advantage you experienced with v3 btw?
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] billy_overheat:
Before this, my adw restored quite a lot of time when I want to go back to the home screen. Now it isn't. I'm wondering whether the app has problem or what. Tw is usable now without bloated stuff. I would say a little smoother than stock.

But if you're ok author stock, just wait for ics to come.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] ph00ny:
No reboot issues except when pulling it off the dock occasionally
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] shazoom:
If your rooted, you could check for crashed apps in /data/tombstones. The files in their contain something like core dumps.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] halabeno:
for the last week, i'm turn off "power saving mode" and change the timeout of the screen to 10 minutes.

from that my tab will not shutdown again, like the problem maybe solved.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] 九千.:
Thanks for the great tips! I just realized that the vnc server is more evil than mediaserver... :eek:

/data/tombstones # grep '>>>' *
tombstone_00:pid: 5386, tid: 5386 >>> /data/data/org.onaips.vnc/files/androidvncserver <<<
tombstone_01:pid: 9543, tid: 9645 >>> com.gameloft.android.ANMP.GloftSXHM <<<
tombstone_02:pid: 6524, tid: 6524 >>> com.android.browser <<<
tombstone_03:pid: 3893, tid: 3893 >>> /data/data/org.onaips.vnc/files/androidvncserver <<<
tombstone_04:pid: 2702, tid: 5988 >>> /system/bin/mediaserver <<<
tombstone_05:pid: 5208, tid: 5208 >>> /data/data/org.onaips.vnc/files/androidvncserver <<<
tombstone_06:pid: 26089, tid: 26089 >>> com.lookout <<<
tombstone_07:pid: 7227, tid: 7227 >>> /data/data/org.onaips.vnc/files/androidvncserver <<<
tombstone_08:pid: 8550, tid: 8550 >>> /data/data/org.onaips.vnc/files/androidvncserver <<<
tombstone_09:pid: 2705, tid: 2845 >>> /system/bin/mediaserver <<<
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] shazoom:
Hope that helps. It didn't fix all reboots for me but did explain some instances when the whole interface shutdown or the tab became unresponsive for a long time.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] orenxda:
Reporting it happened to me like 7 times in a month /phone use. Not much, but enough to look fwd to an ICS update.

My device revealed unresponsive mainly when home wifi network is lost going out. For unwanted reboots I noticed it doesnt auto reconnect and displays "?" in notifications to chose a wifi nw.

I don't use power saving mode. +lockscreen tends to set itself back to annoying 15s.

A couple of scary display wake-ups too.

Loving the device, but looks so much fragile than my old gtp1000 tank... hope samsung won't fool us again on device update.

gtab7.7 hc3.2 HTJ85B/XXLB4 lpro/wlocker

cheers
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] adamkx7xdesire:
Hi guys!!

I've got for sure broken device... which has 3 days!!! till yesterday everything was perfect... but than after all night long charging WHEN TABLET WAS OFF now it reboots evert 15 sec... I cant understand wtf.... I haven't rooted it yet.. only installed few apps... gt-p6200 android 3.2 kernel 2.6.36-.....
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] 九千.:
May be you could tell us about that few apps you have installed for our investigation.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] adamkx7xdesire:
Ok I've installed few games like angry birds gt racing minecraft many logic games and adobe bigger ones which I don't remember now.. Programs like Wolfram alpha boat browser sygnic navigation quick office and some more... One I think danger app is parental control by kaspersky... Which blocks some internet sites and apps which I didn't allow to use for man little sister (whose this tablet belongs to).... I will try to do factory reset.. And if that wouldn't help I will give it to service... Hehe that's funny that my 2 years old HTC desire has broken processor which make reboots when use hard or use with charging and it's still very good device... And this Samsung crap survived only 3 days... if that list of apps isn't enough I will make full tomorrow because now I'm out of home... Thanks anyway ;)
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] standarduser:
I have the Verizon Galaxy Tab 7.7 LTE. I've had it for about 3 months now. I have the same software on it as I do on my Galaxy 8.9 (wifi).

It is NOT rooted.

It has the latest firmware.

Running the stock Honeycomb launcher.

Android 3.2

Let to itself, it will reboot on it's own several times a day, and even when I'm using it. Yesterday I was in the middle of playing tower defenece and it rebooted.

I have narrowed it down thus far. If the tablet is in airplane mode, it will not reboot on it's own. Ever.

If I leave it in airplane and turn on Wifi, then it will start rebooting. (it just rebooted while I'm typing this, as it sits untouched on my desk).

So I'm not saying that the Wifi is the cause, but perhaps there is a misbehaving application that it causing the issue.

Helpful?

Are there any kind of logs that I can look into to see what the last application to use the data connection was?
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] kishd:
If you have an sd card try removing it and rebooting sometimes a faulty sd card can cause random reboots.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] standarduser:
Hi, thanks for the suggestion.

I do have a microSD card installed. However, I didn't think that was the problem, since it would run for days without rebooting, as long as the network connection(s) were turned off.

I still wanted to try your suggestion, so I removed the microSD card, and with the wireless enabled, the unit continues to reboot.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] standarduser:
I figured it out. It was an app called " open signal maps". I removed it and it has been working fine since!

Hopefully this will be helpful to someone else.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] kevin612:
Hi, all

Just got my tab a week ago.

Was fine with it but until today, I had a sim card inserted so that I can use the email app (wasn't able to use it since it doesnt have sim card in it.)

Since then I had a sim card put in, the tab restart when it goes to sleep. No matter I set to 30sec or 10mins

Even in airplane mode too.

Currently now, I remove the sim card and never auto restart now.

Will it be the sim card slot problem?

Cause I think I can exchange for a new one if there is a problem (said in the receipt)

Or should I try reload the firmware and check again with any apps.

Also anyone experience same problem like me?

Thanks

Kevin
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] rom1966:
Samsung Galaxy Tab 7.7. constant rebooting

I have the same tablet and same problem you're describing but don't have open signal maps on my device. We use these for work and have about 10 of them. 4 are exhibiting this problem while the other six seem to be working fine. I am curious what steps you used to determine that open maps was your problem. Most of the people using the tablet don't have any personally downloaded apps on the device. I have a slew of them and wanted to know if there was a way to find the culprit.

Most of the tablets are in the condition they came in from Verizon with two additional apps, Formotus and a Brother apk for printing to a blue printer. Like I indicated though, we have 6 tablets working fine. I believe it is related to either Wifi or 3g/4g. I have tried Airplane mode and don't seem to get the reboots. I get them with Wifi enabled and disabled.

We have 20 to 25 of these in other markets but our IT department is claiming that no one else is reporting an issue.

I am going into Verizon tomorrow for some help but not holding my breath... Was hoping to hunt down a solution here...
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] standarduser:
Sadly, I have to report that removing Open Signal Maps, only eliminated 90% of the problem. At that point, I was getting a reboot at least every hour, if not more, when the 3G radio was turned on. The problem stopped once I removed that app. Now the problem has returned, but not as frequently. Maybe once or twice per day. I generally run it in Airplane mode w/ WiFi turned on. I found this extends the battery when I'm at home. So even in that config, with or without GPS enabled, I still get randomn reboots. Sometimes when I'm using it, and other times when it is sitting on the desk with the screen off. I'm guessing maybe 3 or 4 times per day.

Unfortunately, I have installed/removed a number of apps since the time of my previous post, so I can't say for sure what brought it back. My guess is that there is some kind of system call that is unhandled, and while Open Signal Maps was clearly hitting it, maybe now I have another app that is hitting that call.

Rom 1966, I am at a disadvantage since I only have the only Tab 7.7 to troubleshoot. I do have a Galaxy Tab 8.9 with most of the same programs, however that is obviously different since it lacks the cellular data components, along with having a different CPU. Maybe we can find a pattern of radio firmwares or something between the misbehaving tablets?

XDA people: Is there some kind of log or event list anywhere that I can tell what the last process was that ran before it was shutdown?
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] golden422:
I have experienced an enormous amount of random reboots and boot loops with my Verizon 7.7. It's incredibly frustrating. This has got to be the ultimate combination of fantastic hardware and really poor software implementation. I have numerous other Android devices that have ranged from Froyo to GB to HC, ICS and JB. The Verizon 7.7 is by far the worst.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] standarduser:
This is my third tablet from Sansung. I had the original Galaxt Tab, and then an 8.9 BEFORE THE 7.7. The 8.9 is flawless, and the 7.7 would be my favorite, if only for the reboots.

I thought that maybe JuiceDefender was causing it, but I disabled that and it still rebooted.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] kishd:
Try removing your microsd card. I had a frustrating time with random reboots caused by a faulty microsd card even though the card looked good in the computer. Replaced it and have been a happy puppy since.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] standarduser:
Great suggestion but unfortunately, no dice. I just took the card out, and put it a case for safe keeping. Then I tapped a icon to open an app and it rebooted.

:crying:
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] kishd:
Did you reboot after removing the card?
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] standarduser:
ya know, I didn't.... but since it rebooted on it's own, I've left the card out to see how it behaves today. So far, it's been ok...

---------- Post added at 09:49 AM ---------- Previous post was at 09:39 AM ----------

Just for kicks, I reinstalled Open Signal Maps (see earliers posts) and see how it goes.... no reboots yet.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] esoh:
I have the Verizon i815. Sometimes when I'm working on it, the screen shuts off and I get a little white dot smack dab in the center. I press the power button for 3-4 seconds and when I feel a vibration, I release the power button, then hit it again and it opens to the lockscreen. On the other hand, if I hold the power button for longer than 3-4 secs, it will do a full reboot with the Gal Tab start screen.

Is this what people are experiencing? I'm on stock HC rooted. FWIW, my tab didn't do this for the first month that I have owned it, it has only happened in the past week or so. I think that it's an app, or wifi issue. I will continue to test with airplane mode, etc. and report back.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] standarduser:
"the screen shuts off and I get a little white dot smack dab in the center" is exactly what we are seeing. If you just let it go on it's own, it does a quick vibrate and then comes back up in a few seconds. I think you pressing the power button is ineffective/coincidental. My goes right to the home screen, but I have the lock screen disabled.

My tablet is not rooted.

Do you have a MicroSD card installed?

---------- Post added at 10:22 AM ---------- Previous post was at 10:09 AM ----------

Update: I was watching a youtube video and it restarted. (still no MicroSD card installed)

Figuring that maybe a crash-restart isn't the same as a proper restart, I just did a proper restart...
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] esoh:
OK, I guess it's good to know that I'm not the only one with this problem. And I guess I never thought about the power switch, but next time I will let it go on its own. Finally, I do have a mSD installed. 32GB.

FWIW, I got the SD when I first got the device and didn't have the problem. The only thing that might be causing the problem is that I turned on the LTE about 2 weeks ago and it could've started then. I turned it on by getting a new SIM card from VW and starting pre-paid service.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] standarduser:
So I've left my MIcroSD card out. I've removed Open Signal maps. Manually rebooted.

I'm still getting random restarts. Sometimes when I'm using it, and sometimes when it's just sitting there with the screen off. (I heard the restart sound, and then a minute later the screen comes back on).

I'm still open to suggestions
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] esoh:
Given that I believe my problems started when I turned on the mobile data, I'm trying an experiment when I'm running it with the mobile radio off completely. So far I've been going for a day with no reboots, but I haven't used it that much. I will let you know how it goes.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] swissd8:
I also get random reboots, but only when ttorent is running and downloading stuff. Never had it otherwise or didn't notice it anyway.

I have Zeta rom 3.5 on P6800.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] mewatashiakumoi:
I think i never had self reboot but sometimes things become so unresponsive so i had to reboot the tab manually
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] TheBouch:
I have the Verizon i815 and have been experiencing the same restarts as you described. It seems to be more often lately. Turning off mobile data does not seem to help. This is very annoying :(
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] esoh:
For some reason they appear to have stopped. I'm not sure why, but I continue to believe that it was an app that was causing it (my guesses would be Maps or FB). Anyone else getting more/less turn-offs?
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] standarduser:
YES! the reboots hve stopped for me too. At least now Im fairly confident that its an app causing it and not the device itaelf.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] 九千.:
I suspect there are some apps caused reboot. Anyone would list those apps suspected to cause reboot so that we could test?
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] captaineos:
Same issues

Hi Ya'll

On 4.0.4 with Root - device reboots around 3 times a night with normal use but rock stable if watching movies.

Also having serious bluetooth keyboard lag - eveything lllloks likeee thisss!

I *love* the Amoled screen and size but its really letting me down - it wasn't a cheap tablet.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] standarduser:
My reboots came back, but not as frequent. I had a thought today. Could it be related to the Media Scanner? Im wondering if its hitting a corrupt file. Does anyone know how to manually trigger that job?

---------- Post added at 11:27 PM ---------- Previous post was at 11:25 PM ----------

Try installing Null Keyboard (from google play) and setting your input mode to that when using a Bluetooth keyboard.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] xrayA4T:
There are some rescan media apps in the market.
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] rhester72:
I am experiencing same on my i815 running stock rooted ICS. I used Scan Media from the Play Store (recommended by reviews as best for ICS) and will report results after testing stability for a few days.

Rodney
[Galaxy Tab 7.7 Q&A, Help & Troubleshooting] standarduser:
I tried a media scanner from the market but it did not cause a reboot.

My tablet is stock 3.2 not rooted.