[SOLVED][Q] Random crashes after which phone fails to reboot - Galaxy S II Q&A, Help & Troubleshooting

Hello,
Recently I went from Cyanogenmod 10 back to the newest stock firmware with the Philz kernel on my GT-I9100. Since then I have problems with the phone (seemingly) randomly crashing. It freezes and needs to reboot - either by holding the power-button for a few seconds or it will (try to) reboot after a while on its own.
The issue is that it doesn't manage to reboot after these crashes. It gets stuck on the screen before the Samsung boot animation, where it displays the phone model (and where the yellow triangle would be displayed, if I had a custom rom installed). Nothing happens after that, the screen doesn't change, even if I try to reboot again.
I've tried clearing the cache partition and also the Dalvik cache from recovery mode (which is still accessible) but the phone will still not boot. Interestingly, what does help, is making a backup of the phone using the clockworkmod and restoring it immediately afterwards. The phone will then run normally again - until the next crash at least. I've tried restoring the phone to factory settings but the crashes still occur.
I'm starting to get quite annoyed by these crashes and I can't backup/restore the phone every time these happen, as that does take a bit of time. I've had similar crashes with Cyanogenmod but the phone would always reboot after those without problems, so I could live with it.
Has anyone made similar experiences? Would anyone have a suggestion on how to solve this issue?
Many thanks,
Jocbe

Check the firmware you flashed to see if its broken or corrupted. If yes, redownload it and flash again via Odin. If not, try flashing it again via odin, then do a full wipe, then only root it. Let know if that helps!
And FYI, the startup screen (with the yellow triangle) is known as 'boot logo'.
"To err is human, to forgive is divine."
Sent from my SGS II

immortalneo said:
then do a full wipe, then only root it. Let know if that helps!
Click to expand...
Click to collapse
I'll try that during the next few days, thanks! With 'only root it', do you mean don't flash the Philz kernel on there but instead do something like this: http://forum.xda-developers.com/showthread.php?t=2116549 ? I'll let you know if it helped, once I have flashed it and tested it for a little while!
immortalneo said:
And FYI, the startup screen (with the yellow triangle) is known as 'boot logo'.
Click to expand...
Click to collapse
Ah, thanks - I thought it must have a name of its own; noted for later usage

Sorry for my poor English mate. I meant "only then should you root it".
"To err is human, to forgive is divine."
Sent from my SGS II

Sorry for the late reply but it took me a while to actually get around to flashing the phone (and then testing it for a while). I thought I should post the solution which worked for me, for completeness reasons, though.
Rather than trying to re-flash the stock firmware, I decided to go back to Cyanogenmod, as I much prefer it to Samsung's stock firmware. I simply installed the .zip-file in recovery mode and since then things work as they should - so far I've not had any major crashes or problems rebooting. I suppose something might have gone wrong while flashing the stock firmware before.
Btw, if anyone is interested, the problem originally was that the phone would crash entirely, whenever a single app crashed. So essentially, whenever I should have seen something like a 'someapp has stopped unexpectedly'-message, the phone would freeze, turn off and get stuck at the boot logo.
Anyway, this problem is resolved for now

Please add [SOLVED] to the title of your post then.
"To err is human, to forgive is divine."
Sent from my SGS II

Related

[Q] How to know if my GTi9100 S2 is soft or hard bricked thru?

Hello,
I have this weird feeling lately even if I don't play hard with my phone other than re-flashing or updating stock firmwares on my GTi9100 (no games with custom ROMs). Last week I fresh installed XWLSN , rooted with 'PhilZ-cwm6 v4.92.8 with CWM 6.0.3.0 based recovery', cleaned up bloats (listed in http://forum.xda-developers.com/showthread.php?t=2016419), cleaned up unwanted program start ups (System Tuner app), did a nandroid backup prior to all thsee... ALL IS WELL.
Few days back some guys said they are calling me, the phone keeps ringing but no answer (it happened once). I can't find those missed calls in my logs so I wonder what gone wrong. Today I left charging the phone from my laptop via USB (normally I do), I just tried to unlock it for something the phone showed up black no buttons responsive...I immediately called from my friend's mobile, it's ringing at whose end but not on my phone. I force rebooted it and things are back cool.
What's up with this? Do I mess withe the firmware?? Just another Typical Touchwiz/Homescreen freeze story?
I am too careful and I mostly know what I did on this after rooting.
Tips please.
I don't know why it's been doing that, but since the phone is working it's not bricked at all.
Verstuurd van mijn GT-I9100
Christiaan91 said:
I don't know why it's been doing that, but since the phone is working it's not bricked at all.
Verstuurd van mijn GT-I9100
Click to expand...
Click to collapse
I can agree on that, so do you think it's Just another Typical Touchwiz/Homescreen freeze story?
insaf_mohd said:
cleaned up bloats (listed in http://forum.xda-developers.com/showthread.php?t=2016419), cleaned up unwanted program start ups (System Tuner app), did a nandroid backup prior to all thsee...
Click to expand...
Click to collapse
Freezing all those apps is obviously ur issue. A guy on that thread had posted that on freezing all those apps, his phone didn't boot anymore.
Some app crucial to the proper functioning may have been inter rupted. Since u have a nandroid, I suggest you restore it to fix this issue first.
Then you can try freezing apps one at a time, checking whether they cause any issues.
"To err is human, to forgive is divine"
Sent from my SGS II
immortalneo said:
Freezing all those apps is obviously ur issue. A guy on that thread had posted that on freezing all those apps, his phone didn't boot anymore.
Some app crucial to the proper functioning may have been inter rupted. Since u have a nandroid, I suggest you restore it to fix this issue first.
Then you can try freezing apps one at a time, checking whether they cause any issues.
"To err is human, to forgive is divine"
Sent from my SGS II
Click to expand...
Click to collapse
Thanks Savior I'd try that and let the word know!!

[Q] Soft bricked S2 I1900 w/e [SOLVED!!!!!] !!! (TY XDA!!)

Ok i just rewrote with tech support in mind. I start my phone and the symbol pops up as normal with the yellow exclamtion mark. Then its followed by a a purple seryia ying yang logo and then it goes black. Im not sure if it is shutting off when it goes black or if its still on, i do know that when it goes black my computer is still trying to search for the phone or something (drivers are beign reconized or installing??). So that is what my phone is doing. !!!!!!! I can enter recoverey and download mode. (so hold volume up and down)
When ever i flash a rom i get a black screen, am i flashing the correct rom/kernal??
btw this was caused by trying to simunlock on a nightly cm10, didnt work so thought to flash back but i ****ed up the flash.
pleas help me i start summer school tomrrow and this is stressing me the **** out.
1st-check ur phone's model since u can't even spell it right
lololol
Hahah yea sorry I've typed an entire semester on my laptop key board and im trying ot make the transistion to the new spacing. I looked under teh battery (threw out the box unfortunatly) and the modle is GT-I9100M
under that it says A3LGT9100
Go to sammobile.com and download a stock firmware for ur device model, ur region and carrier (if any).
Then enter Download mode, and flash the firmware via Odin.
From what I read, it seems u have flashed a siyah kernel (ying yang logo at boot). What files did u flash till now? How did u try to unlock it?
"To err is human, to forgive is divine"
Sent from my SGS II
aa
I was flashing Cynogen mod nightlies until now. Im not sure if I am flashing the right kernel either. I tried flashing a stock rom and kernel i think. Do yo mind linkuing me to a specific one? I am now getting a constant loop and i took the battery out. (the logo sits there and dodesnt do anything. ive tried putting th ebattery back in a coupkle of times even after an hour and w.e)
Could this be hardware? i can still download mode now that it has started looping and i can still go into recovery mode. (so up and down)
Porcelainfog said:
I was flashing Cynogen mod nightlies until now. Im not sure if I am flashing the right kernel either. I tried flashing a stock rom and kernel i think. Do yo mind linkuing me to a specific one? I am now getting a constant loop and i took the battery out. (the logo sits there and dodesnt do anything. ive tried putting th ebattery back in a coupkle of times even after an hour and w.e)
Could this be hardware? i can still download mode now that it has started looping and i can still go into recovery mode. (so up and down)
Click to expand...
Click to collapse
If u are on CM now, and you can enter Recovery, wipe cache, dalvik cache and fix permissions to see if it boots.
"To err is human, to forgive is divine"
Sent from my SGS II
x
Yea i dont think i am any more i have been trying to flash other roms. when i boot i dont get the cyan circle logo. When I turn my phone on now all it does is show the S2 splash screen WITHOUT the yellow exclamation mark now. When i put the battery in even sometimes it just turns on its own and loops the splash screen (like not "loop" but just shows the splash screen steady.)
I took the battery out so it doesnt burn the logo into the screen haha. Thank you for the help, I just started spring classes.
That means you are in stock rom. Which did u flash last?
If its not 4.0.4, try entering recovery and doing wipe data and wipe cache partition.
"To err is human, to forgive is divine"
Sent from my SGS II
dasad
Yes yes I have tried that numerous times! http://forum.xda-developers.com/showthread.php?t=1619571 I am considering it could be this? The writing error?
I repeat if thisthread is somehow still alive. My s2 just shows the s2 logo screen. and can go into download mode and recovery mode.
EDIT: Wow I just reread that forum and it says absolutly nothing about te NAND write errors OO_ sorry for posting that.
D:
I guess im not goint to get this fixed D: / bump
Go here:
http://www.sammobile.com/firmwares/1/?model=GT-I9100M&pcode=0#firmware
Download a 4.1.2 firmware for ur country (and carrier if any). If there is none, download 4.0.3 firmware.
Flash it via odin.
Reboot to recovery, and do a factory reset and wipe cache. Reboot ur phone.
Then report here.
"To err is human, to forgive is divine"
Sent from my SGS II
asd
I don't know why, I literally re flashed the stock ro mjust to humor you and it worked,
I had tried oing that at least 4 times before and fo rsome reason it worked this time, I think it was becasue the battery cimnepltly drained (like to dead) but im really not to sure.
Either way THank you so much for making me try it one more time, or pointing me towards the correct rom or something.
TLDR Broke uni kid saved 250
Porcelainfog said:
I don't know why, I literally re flashed the stock ro mjust to humor you and it worked,
I had tried oing that at least 4 times before and fo rsome reason it worked this time, I think it was becasue the battery cimnepltly drained (like to dead) but im really not to sure.
Either way THank you so much for making me try it one more time, or pointing me towards the correct rom or something.
TLDR Broke uni kid saved 250
Click to expand...
Click to collapse
Ur welcome!
Always remember:
"Rome was not built in a day."
Please add [SOLVED] to the title of ur post.
"To err is human, to forgive is divine"
Sent from my SGS II
did u try flashing another rom and kernel through recovery ?
neerajganga said:
did u try flashing another rom and kernel through recovery ?
Click to expand...
Click to collapse
He solved his problem :fingers-crossed:
Porcelainfog said:
I don't know why, I literally re flashed the stock ro mjust to humor you and it worked,
I had tried oing that at least 4 times before and fo rsome reason it worked this time, I think it was becasue the battery cimnepltly drained (like to dead) but im really not to sure.
Either way THank you so much for making me try it one more time, or pointing me towards the correct rom or something.
TLDR Broke uni kid saved 250
Click to expand...
Click to collapse
Don't forget to put [Solved] at the begining of the title

[Q] Yellow Triangle after months of usage

So I was recently downloading new apps over Playstore, using Whatsapp and quite a few other apps were running in the background. My battery was fairly low, and the phone was beginning to slow down. I believe as I went to charge it, or just before I tried charging it, the phone shut down and then rebooted, but never rebooted past the yellow triangle.
I rooted, and flashed a ROM about 2 months ago, so I am accustomed to seeing the yellow triangle when I switch on my phone, and wasn't fussed about it being there. I flashed a nightly ROM I believe it is called, and it was an S3 type Jellybean ROM. (Forgive me for not knowing the technical names).
I can boot into recovery mode, but whilst looking in recovery mode I have seen messages such as E: Can't mount
I'm using CWM-based Recovery v6.0.2.9
The ROM I was using enabled me to use face recognition to unlock the phone if that helps.
Important thing to bear in mind is the fact that I had been using my phone after a root/ROM flash for about 2 months, and it wasn't immediately after a root as most seem to experience on XDA.
How do I recover my baby again?
Enter Download mode.
Flash stock firmware via Odin.
"To err is human, to forgive is divine"
Sent from my SGS II
The phone eventually switched itself back on, and I saw a message saying Android is updating... It is working fine now without any Odin updates etc... Is that normal?
immortalneo said:
Enter Download mode.
Flash stock firmware via Odin.
"To err is human, to forgive is divine"
Sent from my SGS II
Click to expand...
Click to collapse
agapeogbonda said:
The phone eventually switched itself back on, and I saw a message saying Android is updating... It is working fine now without any Odin updates etc... Is that normal?
Click to expand...
Click to collapse
It seems u wiped the Dalvik cache in recovery. That usually results in a longer booting time.
Since ur phone is not stuck anymore, there is no need to flash via Odin.
P.S. Write down the info given in Settings > About Phone. That will help u know which rom u have, which kernel and what android version u are on.
"To err is human, to forgive is divine"
Sent from my SGS II

[Solved] i9100 Stuck on Samsung logo on boot, Recovery Mode wont work green man shows

Hi all,
Searched the forum (and Google for that matter) for an answer but haven't found help on this particular query.
Yesterday my wife was charging her S2 (GT i-1900) at work via USB on her computer when an error message popped up on the phone stating something was wrong with fontemizer followed by freezing up. She restarted the phone a few times but the boot process only got as far as the white Samsung Logo and hasn't been able to get any further since. I've read that going into Recovery Mode and clearing the cache helps with this matter. Since I'm out of the country for the next 12 days, I tried to help her over Skype with getting into Recovery Mode (Vol UP+Home+Power) but for some reason it never gets her to the recovery menu. What happens is a green Android man shows up quickly (skype screen cap below), disappears followed by going right back to and freezing on the white Samsung logo. This happens every time. She's able to get into Download Mode (Vol DOWN+Home+Power) without any issue, but getting into recovery hasn't been possible. I've searched high and dry about why the green android man shows up temporarily but not into recovery and have found nothing. We really don't want to go down the reflashing a stock rom onto her device route as she's got a lot of unbacked up photos and videos that we don't want to lose so am hoping to find a fix to this problem that doesn't involve that.
Is there anyway we can get her into Recovery Mode without doing a stock reflash? And would clearing the cache help with this problem anyway?
Big thanks in advance to anyone in the know who can help with this matter!
Attached:
Screencap of the green Android man that shows up before quickly going back to and freezing on the Samsung Logo when hitting Vol UP+Home+Power
The thing is, flashing a stock rom via Odin won't wipe, unless you flash a 3 part firmware.
So what you need to do is go to samfirmware, and download the stock rom for your country & carrier. It will be a one part firmware, a tar.md5 extension. Don't get ICS 4.0.4. Do you know if it was on ICS or JB before? Best bet is to flash the same stock rom you were on before the issue.
So, flash the stock rom via Odin in download mode.
Regardless of flashing with wipe or non wipe: if you only want the photos and videos, they are stored on the internal or external sd card. They're not affected by a factory reset, or a wipe. So you should be good either way. Give it a a go.
Sent from a galaxy far, far away
I appreciate the response! To her (and my) surprise, after leaving the battery out of the phone overnight, the phone started up again without issue. No sign of errors and the phone is working perfectly fine. Wonder why it would be stuck on boot and a few hours later be back to normal? I've never experienced this before.
Meanwhile, I'm going to sort her out with Titanium Backup just in case... Thanks again for the help
Great! Goood to hear, I don't know how a long distance Skype flash would go Definitely get a backup going. If you're using titanium backup that means you're rooted, which means you can make a nandroid backup. I suggest doing that.
Good luck
Sent from a galaxy far, far away
And please don't forget to add [SOLVED] to the title of your post.
"To err is human, to forgive is divine. "
Sent from my SGS II
immortalneo said:
And please don't forget to add [SOLVED] to the title of your post.
"To err is human, to forgive is divine. "
Sent from my SGS II
Click to expand...
Click to collapse
I put [Solved] in the title, although [Mysteriously Solved] would be more fitting! Still wondering what caused the issue in the first place...
And now you have a working phone, get her to backup her photos and data as soon as possible....either to cloud storage or to a PC.......just in case......
Sent from either my S2 or my W via XDA developers app

[Help] my device acts strange for the last few weeks.

About three weeks ago, he suddenly started warming up , then the signal went very bad, and this week the play store and google service something, started to stop responding and closing, the annoying thing was the pop ups about it, and they froze my SGS2 every 5 seconds.
I decided to do a factory reset today but when it rebooted it stucked on the boot logo
I'm still able to enter recovery and download modes, and so i wiped all data and cache through there. The phone boots up, for a few seconds, then reboots it self and stucks at the boot logo
Then I realized the only way is to flash a stock rom through odin, but computer ain't recognizing the device suddenly.
Now Im out of ideas , please help
firmware : 4.1.2 jellybean stock rom
ROOTED
btw: I tried to flash siyah kernal from the CWM when he boots up, but its impossible in the amount of time he gives me until he reboots.
Look for @Hopper8's Odin troubleshooting guide here on XDA.
"To err is human, to forgive is divine."
Sent from my SGS II
Moisture exposure.
MistahBungle said:
Moisture exposure.
Click to expand...
Click to collapse
Could u please explain why it could be that?
"To err is human, to forgive is divine."
Sent from my SGS II

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