Random reboots - how to log? - Galaxy S 5 Q&A, Help & Troubleshooting

Hi,
I am owner of a G900F since 2 weeks. The first 1.5 weeks I've used the phone with stock rom for testing functionality, then I've flashed CM12.1 from their offical website. After that, I've flashed Xposed and installed XPrivacy. I don't have any bootloops, just random reboots. The phone freezes for about 3 seconds, the screen gets black, it vibrates two times and then it restarts hard - I see the logo with "powered by android" and then CM loads.
I've tried to find out, why the phone reboots, but LogcatExtreme only shows logs beginning with the boot. How can I find out, why the phone rebooted?
I actually did not find any pattern after which the reboots happen, so logging with the PC is hardly possible. The reboots happen one to three times per day.

You can get the log from /data/log
dumpstate_sys_err.txt.gz
or also dumpstate_app_err.txt.gz
You can open them and search for either FATAL or ERROR, fatal usually causes reboots so i recommend check them out and find out what they mean.

I've tried to open that file, but /data/log does not exist.

bump it up - the problem is not fixed, because I do not have any logs

bump

Related

Unrecoverable bootloader error with stock device

Folks,
Had a really weird event happen today. My stock ICS offical Toshiba image (non rooted) Thrive was rebooted as it was kind of acting slow; when rebooting, I get the 'nonrecoverable bootloader error' on the Toshiba splash screen. Can't even shut the device off....I have to pull the battery out. I did this a couple of times and got to the same bootloader error message.
I tried powering up with the volume down key and it booted ok. Rebooted it again to test and it boots just fine now.
Anyone seen this issue occur by itself (i.e. no root attempts or no flashing attempts?)
If the flash was corrupted, I'm not sure how it would have fixed itself.
I'm wondering if this is just a foreshadowing of things to come with perhaps the flash going bad.
Any insight or ideas would be appreciated. Hopefully this isn't a hardware failure starting to manifest itself.
I'm up and running now but I'm still confused how just booting with the down arrow on power-up would solve the problem.
thx.
-J
Its not common but does show up occasionally. If it gets stuck again pull both batteries for half an hour or longer then seen if it clears up, if not, dalepl may be able to help.
Sent from my Galaxy Nexus using Tapatalk 2

Not able to start from factory reset again, get's stuck or reboots constantly

hi...
I'm really desperate, my phone is suddenly dying and I have no idea why, I'll tell you from yesterday what has happened:
- I'm playing a stupid game and suddenly the screen goes black. No led, phone doesn't answer any button, nothing. I hold power button, nothing. Remove battery and put again, nothing. After some attempts phone turns on, but just after starting it reboots or stays frozen.
- I decide to change the rom (I had simpl rom), so I do a full wipe and put CM 12. It seems it works, but when I'm in the settings, at the beggining, I don't even have time to put the wifi, it starts rebooting again and/or not responding.
- Desperated, I install via odin the stock firmware from Sam Mobile. It seems it's gonna work, but when the dialog of "Android is upgrading -- Optimazitating app x of XX" it always gets stucked in a number, randomly. I never get to the 230 apps.
- As a last chance, I try Kies to install factory firmware. The same as before happens, but now it's only 17 the number of apps it tries to optimize.
These last 2 times, of course, I enter recovery from time to time (now the default one) and wipe cache partition.
My phone is agonizing, what the f is happening? Does anybody know what could happen?
Please help...

GT-I9505 unable to boot; freezes constantly in Download Mode; can't flash anything

Hello,
my Galaxy S4 got soft bricked recently and I am looking for a solution for 5 days now and now I decided to ask you guys for help since I can't find anyone with the same problem.
I had Albe95 LolliROM 9.0 (15/05/16) [HPA1] flashed on my phone for about 3 weeks and everything was perfect.
I was using my phone when it suddenly restarted itself and it got stuck in a bootloop (SAMSUNG animation). After many attempts I could boot into recovery (TWRP) but it would freeze there and I had to remove the battery...
I could also boot into Download Mode so I decided to flash a stock rom (I9505XXUHOJ2_I9505OXAHOJ2_I9505XXUHOJ2_HOME.tar) which I downloaded from Sammobile. Odin would always stuck at system.img.ext4 but again after many attempts it workted and I had success. When it was booting my phone froze at "optimizing apps". So I had to turn it off and restart again, but this time the phone was always freezing at the first samsung logo and wouldn't go further.
I can still go into Download mode but can't flash anything because eather Odin fails (complete(write) operation failed) or my phone freezes. Sometimes when I boot my phone into Download Mode the screen would do strange things like flickering and weird colors would show in DL Mode.
So my problem:
- booting into Download mode after works though it freezes sometimes
- can't flash roms because phone is freezing all the time
The model # in download mode is 9505? Was the phone ever dropped? You're using the original Samsung USB cable to flash?
audit13 said:
The model # in download mode is 9505? Was the phone ever dropped? You're using the original Samsung USB cable to flash?
Click to expand...
Click to collapse
Thanks for the reply.
-yes modelnr is 9505.
-i have not dropped my phone recently. I mean its over 3 years old so of course I've dropped it but never really bad and it has no scratches or anything.
-I've tried different cables and samsung cable was one of them.
I also tried all ports of my laptop even tried another pc
Maybe flash the stock rom with a pit file?
audit13 said:
Maybe flash the stock rom with a pit file?
Click to expand...
Click to collapse
I didn't try this pit file thing because I don't understand the meaning of it exactly..
But after many many Odin flash attempts I got a success with a stock rom 5.0.1.
I think I figured out what the problem is but I can't really tell why it's happening (Hardware broken maybe, but which one?)
So after the flashing the stock rom successfully the phone restarted and started the first boot but it froze during the samsung animation again...
I thought maybe if I try a lot of times eventually it will work, so I tried and tried and it always got stuck at samsung animation. (before every boot I had to remove the battery and wait ca 10 sec because otherwise the phone would not start booting at all)
I did not come further than the samsung animation so I removed the battery and placed the phone (I almost gave up).
But after one hour I tried again and this time it passed the samsung animation and got to the Optimization part of the apps. aaaaand it froze there again.
I thought maybe if I wait again for 1 hour I can pass the optimization part. So I did and it really worked. I got to the startscreen.
So the current problem is:
- The phone boots and makes it to the homescreen and freezes after ca 10 seconds. And also I have to wait for about half an hour or one hour to get that far. If I try again right after the freezing I can't get passed the Samsung logo.
What could cause this freezing? Maybe the cpu has to "cool down" in the one hour of waiting and freezes because it gets to hot? I really don't know what it could be.
Something on the motherboard, likely either CPU, EMMC chip, or GPU, is failing. Why or how I don't know, but I'd have a tech look at it.

Verizon Lg g2 stuck in bootloop

So for a few weeks now, my phone has been having bootloop issues. I've been trying to fix it on my own, but no luck so far.
I can get it into download mode. Up until I tried to restore it to its stock version via the User Tool, I could get it to the factory reset options, which led to the options to wipe cache, reboot, etc. However, none of those options worked. When I attempted to reset to factory settings, I got the "dead" green android with the red triangle. Then the screen goes black and starts bootlooping again.
Once in awhile I can manage to turn it on after having it turned off for hours, or even days and it works like normal, except that if I lock it or turn it off it will end up restarting and starting to bootloop again. Which is bad seeing as it drains somewhat fast due to being overheated while having the screen constantly on.
As for my experience trying to use update recovery, it gets to the downloading part then stops and gives me this message "[011.700.147.062.092]??? ??? ? ? ????". I don't even know if I am using the correct stock rom for my phone, since I only know its MEID and model name.
do u resolved this, i have the same problem

suddenly boot-loop, maybe after phone fell

ok
i've been usign whatsapp and suddenly my phone went into bootloop,
tried to enter fastboot, recovery
but he keeps on boot-looping after 2-3 sec of showing the fastboot-recovery icon.
i tried disconnecting the phone-battery-motherboard-etc, but he keeps going boot-loop, showing the first load screen, black screen, and so on and forth
any suggestions? never occured to me before , only after unsuccessful flashing, but like this? this is really weird.
i have a custom rom yes, but with it for a few months already , 0 problems.
p.s my phone fell on the floor few days ago, but had no problem since whatsoever
any clues on how to solve this?
i can't even get to flash via fastboot/recovery because it restarts when im there..
what could be the problem? the only thing pops into my head is that the restart key is pressed all the time, but is it possible?
I had the same problem, crazy thing. I couldn't even enter orange fox, got to the loading screen and got another reboot. I pressed power button fast many times and then worked. The power button seemed to be ok. The only thing that i had recently changed was the EAS version of the predator kernel. It may not make sense but i went back to HMP and now it's fine.
well! it worked lol
what is HMP? a kernel?
A type of kernel, the common one. Now i know that was not the reason!
Hello
I have the same problem as you and if someone has a solution, I will be very grateful !
I can use my phone but if I push to the power Button, it bootloop.

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