Help with Random Reboots - AT&T Samsung Galaxy S II SGH-I777

Hey guys, my i777 has been random rebooting for 3 months now. I've tried everything in the realms of wiping, foctory reseting, ROM flashing etc. When I flash a new ROM (I like SuperNexus and CM9/10) the random reboots are happenning once a day. As time goes by, the number of random reboots reaches a number like 10, 15 per day, which makes the phone basically a black brick. I've tried identifying usage patterns that could lead me to a system fail (maybe some app could be causing it?) but it didn't make either.
It's a hard reset (it takes me back to Samsung screen) and I've tried everything, in every way, in every forum you can imagine, I've also tried looking in the last_kmsg log file, but it never gives me material to work with.
My last attempt to make this work is right below, I've recorded the logcat (it's really big!). I'd be very pleased if anyone with more knowledge in Android system than me could try to identify what's causing this. Thank you so much! The logcat is attached in this thread.

So you've tried going back to stock ginger bread, not installing any apps, and seeing if the problem persists?

Phalanx7621 said:
So you've tried going back to stock ginger bread, not installing any apps, and seeing if the problem persists?
Click to expand...
Click to collapse
Yes I have, keep getting random reboots. Is this a case of throwing the phone away and buying another? I have it for 1,5 years, maybe should be time to move ahead... This thing already gave me so much headache that I've already paid another phone in stress and sweat

vphilot said:
Yes I have, keep getting random reboots. Is this a case of throwing the phone away and buying another? I have it for 1,5 years, maybe should be time to move ahead... This thing already gave me so much headache that I've already paid another phone in stress and sweat
Click to expand...
Click to collapse
As long as you're not adjusting voltages, sounds like maybe the power button could be sticking
Sent from my SGH-I777 using xda premium

Well, guess this could be my last try. I'll check it out and post my results asap... thank you.

There are tutorials on replacing the power button, from what I've read its not too difficult but I suppose its always easier said than done eh lol.
Sent from my GT-I9100 using Tapatalk 2

I had a similar issue, mine would reboot sometimes once a week, sometimes 5-10 times a day. Random sleep of death, freeze and complete battery drain etc. I finally sent it in on my square trade warranty and they replaced the main board - some sort of short in there that was causing it i guess. I suppose it would be possible to swap out the main board, or buy a used phone with a broken screen or something to strip for parts.
There is a great video by "le55ons" on youtube tearing down a I9100 that could help you get an idea of what's involved.

Related

Random Rebooting

I know this is a common problem as I've seen it in other threads on other sites, but I haven't been able to find a cause/solution. My Evo 3D randomly reboots, frequently. It has happened with every firmware version since I got the phone, and with every rom/kernel I have installed. It doesn't seem to be an overheating issue. I've tried uninstalling a few apps to see if they might be the cause. Basically I'm ready to call it a hardware defect. Does anyone have any idea what causes this or how to fix it? I bought my phone unsubsidized online so it isn't easy to return, but I may have to try anyways. My 3D is useless as it is right now.
Return it.....
Sent from my EVO3D
I bought it from eBay so that's not an easy return. HTC wants me to pay to ship it to them and they want my credit card number, then if they decide it's not an issue covered by warranty then they will charge me both for looking at it and also to send it back. Basically they will hold my phone hostage if they decide they want money from me. I have filed a complaint against HTC with the Better Business Bureau over their warranty policy.
If on stock ROM, return it. Sometimes on custom roms it reboots like crazy for me when using browser.
It reboots on stock and custom roms.
Return it...
I've talked to three people at Sprint and they won't accept it as a return. They say I have to take it back to the store it was purchased at, and though I've talked to the person I bought it from, he's in another state, so Sprint says I'm SOL.
SeeNev said:
I've talked to three people at Sprint and they won't accept it as a return. They say I have to take it back to the store it was purchased at, and though I've talked to the person I bought it from, he's in another state, so Sprint says I'm SOL.
Click to expand...
Click to collapse
Try different Roms. My buddies had the same problem. Flashed supra and flashed silver needle kernel. Flashing a custom kernel can easily fix it. The stock kernel argues with the stock OS and the phone is tricked into thinking there is harm. Therefore reboots to try and save your phone from any damage. For sure switch the rom and kernel.
Sent from my PG86100 using Tapatalk
I reboot alot also and its been on all my roms and stock but better now on synergy rom
Sent from my PG86100 using XDA App
tnh196 said:
I reboot alot also and its been on all my roms and stock but better now on synergy rom
Sent from my PG86100 using XDA App
Click to expand...
Click to collapse
Most reboots are due to using unstable software or user error, if these aren't in question then your phone is a bad apple
Sent from my PG86100 using Tapatalk
Have a look at the battery contacts. I have read of some people solving reboots by wedging in a piece of thin cardboard on the opposite end of the battery to give it more solid contact.
SeeNev said:
I know this is a common problem as I've seen it in other threads on other sites, but I haven't been able to find a cause/solution. My Evo 3D randomly reboots, frequently. It has happened with every firmware version since I got the phone, and with every rom/kernel I have installed. It doesn't seem to be an overheating issue. I've tried uninstalling a few apps to see if they might be the cause. Basically I'm ready to call it a hardware defect. Does anyone have any idea what causes this or how to fix it? I bought my phone unsubsidized online so it isn't easy to return, but I may have to try anyways. My 3D is useless as it is right now.
Click to expand...
Click to collapse
replace your sd card.
*EDIT.... just for the sake of being a little more informational and contributing.... a bad sd card will cause this. your phone, like a computer, can detect a bad disk and will reboot itself to check it.
i had the same problem when i first got my phone... i had my old sd card in there... random reboots. replaced the sd card, problem went away immediately.
i KNEW it was the sd card, though, as soon as i powered up the phone with the new sd card installed because on my old phone whenever i would transfer apps to sd i would get this error pretty often "failed to move application" and i would do it again and it would work.
so after i put the old one in my new 3d i would get that same error... along with the reboots, and thats how i figured it was the card.
so when i powered the phone up with the new card, i went to move my apps from the internal disk to the card and EVERY single one of them moved over the first try. and the phone has not rebooted itself once since then.
also, i heard somewhere that HTC sent some phones out with bad sd cards.... so if you are using the one that came with the phone, that could still be your issue. replace the card.
I had a horrible time with my 3vo rebooting, then got a replacement through Sprint TEP (a new one, thank goodness; ##786# tells you refurbished status) but I had the new one do the same.
Once either of mine had a single reboot, it would then continue to a complete load (booting properly) but would then reboot again after 1-5 minutes. After pulling/reconnecting the battery, it is fine for a day.
The old one had the initial reboot WAY more often than the replacement (the old one had several in a day, this one has had only one per day for the past 2 days).
How to fix: You cannot fix it. You can, however, get a good day before it begins its rebooting sequence. To so this, you have to pull the battery. I have waited until it has rebooted, then I hit shutdown and disconnect-reconnect the battery before restarting.
I hope the issue is taken care of and the initial reboot is gotten rid of.
This has happened on bare stock unrooted and rooted cleanrom 2.1 and 2.2. Also, with 2 different SD cards and 2 different batteries and 2 different 3vos. I have HTC's fastboot off.
Cause: My best guess is that HTC fastboot is not completely off even when unchecked--something differentiates what is loaded during a random reboot from what is loaded after a battery pull, but I don't know what. That, or something differentiates a shutdown and the reboot that the phone does when it reboots randomly. I could be wrong. My sample size is only 2 corrections, but it literally rebooted 12 times then stopped completely after the battery pull and the same thing happened one additional time.
I appreciate the insights you guys have given. I have pulled the battery several times and I don't believe it has done any good, though I will test that further. I am using a 32gb sd card that I purchased when I had my evo 4g and it always worked before, but I will try using the 8gb that came with the phone. The battery is snug and I even 2 two spare battery that also don't fix the problem when being used. I had a lucky 2 days without any reboots, then back to about a dozen reboots a day. So far it's happened with every rom I've tried.
I have noticed that the problem seems to get worse in areas where there is no reception. I took it into the hoover dam and it rebooted like 20 times. Also at Disneyland in different ride buildings where there's no reception it would often reboot.
Yes, marginal reception areas are usually, but not exclusively, where mine starts its reboot routine. The other is during the airvana handoff.
Neither the battery or SD card made any difference. It seems to be getting worse now. All I have to do is run an application and half the time it will reboot. I've tried wiping the system and cache and reinstalling roms. Nothing works.
I was wrong before. It is the shutdown that makes the difference. Difference got home and it began to reset itself every 5 minutes or so. I pulled tjw battery during startup and it did not break the rebooting.
After it finished reboting, I selected shutdown then poweres it back on. After it came back up, it stayed up and has been stable since.
It looks like this might be something I have to get used to. If it begins to reboot, I have to give it a clean shutdown to relieve the issue (well, for 20 hours or so, at least). Again, HTC fastboot is always off.

Random Reboots AOKP

Hey guys. this isn't my first rodeo so no flaming.
I keep getting random reboots on my phone. It happens about every 15 minutes to an hour. I've flashed stock and did a full factory reset. I've tried new kernels... What are my other options? This is starting to get on my nerves
My suggestion is going back to bone stock with no adjustment.
votinh said:
My suggestion is going back to bone stock with no adjustment.
Click to expand...
Click to collapse
Already did... I'll try again tonight.
Also, reboot seems to stop when plugged in?
jdbeitz said:
Already did... I'll try again tonight.
Also, reboot seems to stop when plugged in?
Click to expand...
Click to collapse
Are you undervolting?
Any 3rd party accessories? (Batteries, etc.)
Could be a hardware issue
Sent from my SGH-I777 using Tapatalk 2 Beta-5
No hardware accessories and no undervolting. I made sure to stop the UV when the reboots started occurring. I'm by no means a dev, but i've been around a while and this just baffles me.
jdbeitz said:
No hardware accessories and no undervolting. I made sure to stop the UV when the reboots started occurring. I'm by no means a dev, but i've been around a while and this just baffles me.
Click to expand...
Click to collapse
It could just be a bad battery. I'd suggest wiping and flashing back to stock. If the reboots continue, you can probably get AT&T to give you a replacement.
I'm getting the same problem as you. Before I started flashing (I'm still seeing the problem in AOKP, too), it was happening on the stock rom. I'm going to flash back to stock and see if that helps for me.
By the way, I think it's a hardware issue also. It seems like the reboots are more frequent when I'm holding the phone or when it is in my pocket, maybe the contacts in the battery are the problem? It happens if I just sit the phone on my desk also, so I know I'm not accidentally holding the power button
EDIT: 1
Okay, after flashing back to the stock rom, the problem persisted. I just picked my phone up and it turned of as soon as I lifted it. Have you noticed that lifting/touching is related also?
aabmass said:
I'm getting the same problem as you. Before I started flashing (I'm still seeing the problem in AOKP, too), it was happening on the stock rom. I'm going to flash back to stock and see if that helps for me.
By the way, I think it's a hardware issue also. It seems like the reboots are more frequent when I'm holding the phone or when it is in my pocket, maybe the contacts in the battery are the problem? It happens if I just sit the phone on my desk also, so I know I'm not accidentally holding the power button
EDIT: 1
Okay, after flashing back to the stock rom, the problem persisted. I just picked my phone up and it turned of as soon as I lifted it. Have you noticed that lifting/touching is related also?
Click to expand...
Click to collapse
My problem was also hardware related... it seemed to stem from a wonky power button. I contacted ATT and in 15 hours, FedEx had my new phone at my door. Win.

The "Trying to install Venom" hangout thread~!

Hey guys, I'm on hour 2... or is it 3? I don't know. I'm watching Stargate Atlantis back to back on amazon while re-installing venom (after setting DPI to low on a sense install). This isn't my first time around the block with aroma fails while installing venom, i know it will work.. eventually.
Figured I'd chat it up with others in the same boat, or just create a place to talk about it, either way, welcome! Season 4 episode 2 if you were wondering (just finished up all 10 seasons of sg1 last month, best-show-ever)
Ive tried keeping the phone flat, holding it up, doing a full wipe, non wipe, sense, non sense. I even tried standing on 1 foot with the phone on top of my head, while I spun around in circles changing "A-RO-MA,. A-RO-MA..." (I heard that worked by the way). Unfortunately, still nothing. However, I AM confident that this NEXT one will be the one that works, okay.. maybe the next next one
Serinety said:
Hey guys, I'm on hour 2... or is it 3? I don't know. I'm watching Stargate Atlantis back to back on amazon while re-installing venom (after setting DPI to low on a sense install). This isn't my first time around the block with aroma fails while installing venom, i know it will work.. eventually.
Figured I'd chat it up with others in the same boat, or just create a place to talk about it, either way, welcome! Season 4 episode 2 if you were wondering (just finished up all 10 seasons of sg1 last month, best-show-ever)
Ive tried keeping the phone flat, holding it up, doing a full wipe, non wipe, sense, non sense. I even tried standing on 1 foot with the phone on top of my head, while I spun around in circles changing "A-RO-MA,. A-RO-MA..." (I heard that worked by the way). Unfortunately, still nothing. However, I AM confident that this NEXT one will be the one that works, okay.. maybe the next next one
Click to expand...
Click to collapse
Have you tried using the volume up and down buttons and the power button to navigate in aroma? I haven't had a single problem as long as you go slow. :good:
I actually haven't tried that. lemme give it a shot but will that help it not fail during the installation? It gets anywhere from 8% to 81% . It just seems to hang, randomly, during the extraction/installation process. its only failed 3 or 4 times on the button presses.
Another tip is to hold the phone upright...my friend has the DNA and it took about 4 times to install 1.1... Just go slowly and go very with the touches if you're going to use the touch screen
I was lucky and twice had to install viper and had zero problems.
Weird for you guys. Both my installs were flawless the first go around
Sent from my HTC6435LVW using xda app-developers app
Try a different recovery. I'm using twrp 2.3.something and have never had an issue.
Sent from my HTC6435LVW using xda app-developers app
Bigandrewgold said:
Try a different recovery. I'm using twrp 2.3.something and have never had an issue.
Sent from my HTC6435LVW using xda app-developers app
Click to expand...
Click to collapse
I ended up getting it to install. finally.. I think the "hold it upright" and "go slow" are just placebos. i held the thing upright, went really slow, put it flat on a table, went slow, nothing. Went fast.. nothing..
I'm not sure what the going slow thing has to do with it, or why people think it has some magical powers. The install is not getting stuck during the menu selection. It gets stuck during the extraction of files. Essentially, its entirely random. There might be some merit to the "hold it upright" as someone mentioned it could be an accelerometer, but I found this to be inconsistent as well.
When it finally did install. I had done nothing different than the last 5 or 6 attempts. The phone lays flat on my desk, I push through the install options, then when it starts to install I just leave it there and go back to watching my show. Then.. it just worked, like I said, did nothing different.
As an engineer, my "spidey" sense tells me its a clocking issue (not the processor clock speed). Often when getting hardware to communicate properly during a prototyping phase of development, we (as in I) can run into issues with clock causing internment problems that are difficult to track down. Sometimes the leading edge of the voltage high is dirty (not sharp) and can result in a missed bit. The problem I'm seeing with aroma leads me to think that somewhere, somehow, the installation is losing sync with something.
Without knowing more about how aroma works, there really isn't a way for me to trouble shoot the problem. I'm not a software guy either.
So.. here's some interesting info. I work with a ton of smart guys. A lot of them have android phones, run linux on their machines, program crazy things or whatever. But I am the only one I know of in my research group, or most of the people on campus that roots and roms his phones. Almost every time I mention it to a colleague, they have no clue what a "rom" even is, and they think rooting a phone is "jail-breaking". Anyway, i've always thought that was weird. I figured nerds were nerds, guess not
Serinety said:
So.. here's some interesting info. I work with a ton of smart guys. A lot of them have android phones, run linux on their machines, program crazy things or whatever. But I am the only one I know of in my research group, or most of the people on campus that roots and roms his phones. Almost every time I mention it to a colleague, they have no clue what a "rom" even is, and they think rooting a phone is "jail-breaking". Anyway, i've always thought that was weird. I figured nerds were nerds, guess not
Click to expand...
Click to collapse
Same here. Nobody I know knows about roms except for my girlfriend who has a jailbroken iPad and my roommate who has a rooted GS3.
Anyway, I SWEAR going slow helps. It doesn't always keep it from freezing but it definitely helps. I really don't think it's placebo. I usually wait about 3 seconds between presses no matter what. Also are you telling Aroma to do a full wipe? I'm not sure if it matters but I always do that manually and tell Aroma no since I don't think that does anything on TWRP anyway.
Did you get it working?

[Q] Help LG-P760 frequent crash

LG-P760 stock Android 4.1.2
Only basic apps, FB, gmail etc.
1. Factory/hard reset
2. Works around 3-4 days perfectly, then starts to crash.
By crash I mean black screen, nothing helps, only battery pull.
3. After first crash, starts crashing more frequently. Happens only in standby.
Worst was today: If I start phone, log in, then it wont crash before I put it in standby. First time in standby, within 30 second, it had crashed.
twice crashed when someone tried to call me. Vibrated once, then crashed.
I would like to avoid replacing my phone.
Any ideas how to find the source of this problem? Any recommendations?
lamui said:
LG-P760 stock Android 4.1.2
Only basic apps, FB, gmail etc.
1. Factory/hard reset
2. Works around 3-4 days perfectly, then starts to crash.
By crash I mean black screen, nothing helps, only battery pull.
3. After first crash, starts crashing more frequently. Happens only in standby.
Worst was today: If I start phone, log in, then it wont crash before I put it in standby. First time in standby, within 30 second, it had crashed.
twice crashed when someone tried to call me. Vibrated once, then crashed.
I would like to avoid replacing my phone.
Any ideas how to find the source of this problem? Any recommendations?
Click to expand...
Click to collapse
I had the same problem with Vietnam Rom and it was the baseband. I changed to the baseband from ICS from a Rom of my country so I have Vietnam Rom+Original ICS baseband and everything works well.
Thanks.
Although, I understand it mostly is problem when you have unlocked bootloader.
I am running stock everything.
And they have problem with rebooting phone, mine crashes and freezes.
Weird is that it starts around third day of normal use.
I think I have to take on a quest with a warranty. Does anyone know, can I contact LG straight without the provider, where I bought the phone?
lamui said:
Thanks.
Although, I understand it mostly is problem when you have unlocked bootloader.
I am running stock everything.
And they have problem with rebooting phone, mine crashes and freezes.
Weird is that it starts around third day of normal use.
I think I have to take on a quest with a warranty. Does anyone know, can I contact LG straight without the provider, where I bought the phone?
Click to expand...
Click to collapse
You can.
lamui said:
Thanks.
Although, I understand it mostly is problem when you have unlocked bootloader.
I am running stock everything.
And they have problem with rebooting phone, mine crashes and freezes.
Weird is that it starts around third day of normal use.
I think I have to take on a quest with a warranty. Does anyone know, can I contact LG straight without the provider, where I bought the phone?
Click to expand...
Click to collapse
I haven't unlocked it. The problem was the same: SOD sleep of death, when the screen goes off you can't do anything but pull the battery.
But if you can use the warranty use it. You should find the warranty info in the box to know where send it in your city.
Sent from my LG-P768 using xda app-developers app
Thanks. I will search into it. Sleep of death is new expression for me.
I only have phone, it came from relatives who threw away receipt + box.
Luckily I managed to get new receipt from provider yesterday (I dont think they usually give out receipts twice), so now I can use local warranty.
Thanks everyone for replying. I will post update when I have final solution.
Since you are stock you might want to consider flashing the kdz to see if that helps. Good luck!
Sent from my LG-P769(20d) using the xda-developers app. If I helped you please hit the "thank you" button.
I'm having the exact same issue with mine. I've heard everything from "try a different SD card" to "factory reset," and nothing seems to permanently fix the issue. What I've found kind of sort of works is just reboot it a whole bunch until it finally comes up and doesn't do it any more. From there, I'm good to go until the battery runs out or I need to reboot it because all the bloatware is causing it to glitch. This usually means that I have to reboot my device 10+ times in a row every few days. Hopefully, you found a more viable fix than this.
neo1piv014 said:
I'm having the exact same issue with mine. I've heard everything from "try a different SD card" to "factory reset," and nothing seems to permanently fix the issue. What I've found kind of sort of works is just reboot it a whole bunch until it finally comes up and doesn't do it any more. From there, I'm good to go until the battery runs out or I need to reboot it because all the bloatware is causing it to glitch. This usually means that I have to reboot my device 10+ times in a row every few days. Hopefully, you found a more viable fix than this.
Click to expand...
Click to collapse
Hi
I managed to kind of solve this issue. Because I am not sure how, I haven't closed thread yet.
Anyway, I warranted device, they re-installed soft. Came back, same thing. After around weeks use, SOD. Factory reset. After that, things went interesting.
I tried not to leave it idle. Always had something running. I also had noticed by the time it never occurred when it was plugged in or music was playing.
One day it did it again, but I was in a hurry and just disregarded it. I did something(I was busy, maybe just plugged it in automatically?) and it came back up. It took like 10 sec for screen to start, but it did just wake up. And it haven't had crash ever since. I have no idea is this solution or is this just some coincidence and I am not keen to factory reset again, to see will it reoccur. It's my only phone
TLDR: Managed to get out of sleep of death, haven't reoccurred since.

Random restarts, only rebootable with battery pull

Hi there.
Hate posting these kinds of things as I know it's probably quite annoying, but I'm getting an odd issue, and don't seem to be finding anything completely similar in the search.
My G5 (UK, rooted, Nougat (stock)) seemingly randomly reboots several times a week. Worse still, when it reboots it seems to stick on the restart at the LG spinning screen. Pull the battery, let it reboot and happy days, but it decided to do it in the middle of the night last night and made me very late for work!!
Is there any way that I can dump some logs on what is happening? I just don't know where to start with this one, and have the fear that it could be hardware related.
Oddly any other type of reboot/shutdown and it will not freeze, so I cannot understand why it does it when this issue occurs... Any pointers?
Many thanks,
Dan.
sir-boffalot said:
Hi there.
Hate posting these kinds of things as I know it's probably quite annoying, but I'm getting an odd issue, and don't seem to be finding anything completely similar in the search.
My G5 (UK, rooted, Nougat (stock)) seemingly randomly reboots several times a week. Worse still, when it reboots it seems to stick on the restart at the LG spinning screen. Pull the battery, let it reboot and happy days, but it decided to do it in the middle of the night last night and made me very late for work!!
Is there any way that I can dump some logs on what is happening? I just don't know where to start with this one, and have the fear that it could be hardware related.
Oddly any other type of reboot/shutdown and it will not freeze, so I cannot understand why it does it when this issue occurs... Any pointers?
Many thanks,
Dan.
Click to expand...
Click to collapse
Catlog was an app that we used to dump logs. (Back when i had galaxy s3)
Give that a try
Sent from my sh!tty LG-H860 that is beyond crap
sir-boffalot said:
Hi there.
Hate posting these kinds of things as I know it's probably quite annoying, but I'm getting an odd issue, and don't seem to be finding anything completely similar in the search.
My G5 (UK, rooted, Nougat (stock)) seemingly randomly reboots several times a week. Worse still, when it reboots it seems to stick on the restart at the LG spinning screen. Pull the battery, let it reboot and happy days, but it decided to do it in the middle of the night last night and made me very late for work!!
Is there any way that I can dump some logs on what is happening? I just don't know where to start with this one, and have the fear that it could be hardware related.
Oddly any other type of reboot/shutdown and it will not freeze, so I cannot understand why it does it when this issue occurs... Any pointers?
Many thanks,
Dan.
Click to expand...
Click to collapse
Sounds like your getting bootloops. When did it start doing it? After you rooted or before? Fool around with anything root related? Try the usual fixes?
Sent from my LGE LG-H830 using XDA Labs

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