[Q] How to find out which app cause random reboot? - Nexus 4 Q&A, Help & Troubleshooting

Hi,
Since the last 2 months (maybe the last android update), my nexus 4 reboot ramdomly. Do you guys know a way to find out which app causing my those reboot (I've already install catlog)? Do you guys witness the same behaviour?
It would be nice to fix the problem without reseting the phone.
I'm running stock rooted android JWR66Y. here a list of the app using root access:
- ad free 0.8.64
- greenify 1.92
- permission manager 2.0
I use apx as launcher.
Thx

Right after reboot grab your last_kmsg log
Sent from my Nexus 4 using Tapatalk 2

Hi,
what to do with last_kmsg?
It shows lots of numbers, some info etc.
and last line saying: Last boot reason: kernel_panic
How to understand this log?
thanks

What kernel are you using? Your kernel Dev will likely be able to assist.
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at4r1 said:
What kernel are you using? Your kernel Dev will likely be able to assist.
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Click to expand...
Click to collapse
i'm running stock vanilla 4.3. No custom kernels/ROMs

Are you using Chrome Beta 30?
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Same issue since last OTA. Stock except for root. Yes to chrome beta 30.
last_kmsg:
"Last boot reason: kernel_panic"

pr0blematic said:
Same issue since last OTA. Stock except for root. Yes to chrome beta 30.
last_kmsg:
"Last boot reason: kernel_panic"
Click to expand...
Click to collapse
Chrome is the issue. If you guys want a easy way to take logs use syslog app from playstore :thumbup:

Related

How to remove root (un-root) device without clearing apps and data?

I have an app that refuses to run because my Nexus 7 is rooted. So I would like to remove root and keep this app installed.
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Not tried it my self but on SuperSU Play description it says that if you uninstall it, you will lose root:
NOTICE: A SPECIAL PROCEDURE IS NEEDED FOR UNINSTALLATION. IF YOU DO NOT LIKE THE APP, DO *NOT* JUST UNINSTALL IT, YOU *WILL* LOSE ROOT.
I would guess that if you have Super User installed, it would do the same thing.
I tried the "temp unroot" function of the superuser app and the app still recognized the root and refused to run.
I will try un-installing superuser now. Thanks for the idea, I will report back.
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Some applications I believe look for the superuser application by name. So if it sees "superuser.apk" on the system it won't run. However, I know some in the past were able to be worked around by renaming the superuser application.
I don't know if this is still a valid method, but...yeah.
mistarose said:
I have an app that refuses to run because my Nexus 7 is rooted. So I would like to remove root and keep this app installed.
Click to expand...
Click to collapse
Try an app called OTA Root Keeper (voodoo). It will temp unroot. You then need to normally force close the app you are talking about and the run it and it should work.
When you are done if you use a lot of root apps you can the undo the temp unroot and be back to full root.
Some versions of su have that ability now too but I've not tried them yet... don't really have anything that cares if I am rooted any more.
Sent from my Nexus 7
I've tried using the temp-unroot feature of the superuser app and I was not able to do so. I wish I knew what this app was looking for.
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Download supermanager from playstore, enable the root function in settings. Swipe over to tge next screen and select uninstall apps and uninstall superuser. Then reboot. That should do ut.
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mistarose said:
I've tried using the temp-unroot feature of the superuser app and I was not able to do so. I wish I knew what this app was looking for.
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Click to collapse
What app is it?
Sent from my Nexus 7
The app is called Jeppesen Mobile TC and you will only be able to download it if you have a 9-10 inch tab with honeycomb or ICS running. I managed to get the apk so if someone wants it to try please let me know.
I will try the above shortly. Many thanks!
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I just tried this and it seems to have removed root like you said yet the application still thinks I have root. I un-installed the app and reinstalled it after rebooting.
The app runs fine on my gfs Nexus 7 which has never been rooted.
Hmmmmm
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mistarose said:
I just tried this and it seems to have removed root like you said yet the application still thinks I have root. I un-installed the app and reinstalled it after rebooting.
The app runs fine on my gfs Nexus 7 which has never been rooted.
Hmmmmm
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Click to expand...
Click to collapse
Hello. Can you explain the process you followed to make this app run in a Nexus 7. Because I downloaded the apk from a russian site in my Nexus 7 (non-rooted) and after the installation the app ask for me my name and activate number and I can´t do anything more.
Thank you for the help!
AVRando said:
Hello. Can you explain the process you followed to make this app run in a Nexus 7. Because I downloaded the apk from a russian site in my Nexus 7 (non-rooted) and after the installation the app ask for me my name and activate number and I can´t do anything more.
Thank you for the help!
Click to expand...
Click to collapse
Jepp is subscription based. You need to buy a subscription to use the software.
Link200 said:
Jepp is subscription based. You need to buy a subscription to use the software.
Click to expand...
Click to collapse
Yes, you are right. But the IPAD you have the same problem and now is posible to intall the
Cycled without subscription.
mistarose said:
I just tried this and it seems to have removed root like you said yet the application still thinks I have root. I un-installed the app and reinstalled it after rebooting.
The app runs fine on my gfs Nexus 7 which has never been rooted.
Hmmmmm
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
I have a Nexus 7 too.
Can you start the app JeppTC like a demo?, because I can't see the "DEMO" button when I start the app.

Hulu problems

OK so no matter what ROM I'm on I get an error message when trying to use the hulu app...I've attached a screenshot of the message it gives me... Something about DRM
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Including stock?
Yes
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Try this: http://forum.xda-developers.com/showpost.php?p=33537009&postcount=20
Works fine for me, Stock, rooted, unlocked boot loader, Franco kernel.
Maybe you have a defective phone?
You haven't frozen anything in Titanium Backup or uninstalled anything?
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javacody said:
Works fine for me, Stock, rooted, unlocked boot loader, Franco kernel.
Maybe you have a defective phone?
You haven't frozen anything in Titanium Backup or uninstalled anything?
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Click to collapse
This phone can't be defective.... Everything works as it should exempting hulu. I tried it on stock and on xylon and aokp..there's something missing and it has to do with DRM. Will look at the link two post above and report back
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whycali said:
Wrong
Looks like they moved my original link so this is a direct link http://suipre.com/8310b8
If you download from the link using your prime use chrome browser. Stock browser didnt work for me.
There is an update in the play store after this. Do not install it or you will be back to not working.
Click to expand...
Click to collapse
Found this in the above link and it makes sense....trying out now. Will let you guys know how it turns out
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Did you freeze any DRM package ?

Stock rom rooted issues

Hey guys I have recently rooted my Nexus 4 and left the stock rom on it. Now a few days later I am experiencing issues mainly with apps that change settings, like juicedefender or a cpu speed app.
I have done some research and according to juicedefender error log it shows I need to have busybox or I should have CyanogenMod.
Ok i hav 3 questions
1. Will installing busy box cause me to lose any data?
2. I know installing CyanogenMod ROM will clear all my data is there a way for me to backup need for speed and bad piggies?
3. Is there a way for me to keep my stock rom and fix these problems?
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Since you're rooted all you need to do for backups is download Titanium Backup and use that to keep all of your data.
Alright im a noob at all this any idea if i should get cm nightly, stable or whatever version ? And if i go with release candidate can i change it to nightly in the future?
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JayMix said:
Alright im a noob at all this any idea if i should get cm nightly, stable or whatever version ? And if i go with release candidate can i change it to nightly in the future?
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Click to expand...
Click to collapse
You will probably want to start with a stable release before jumping into a nightly. Nightly build aren't really known for stability.
Sent from my Nexus 4 using Xparent Cyan Tapatalk 2
Thanks yall, last question do CM updates work likestock roms or do i need to flash them at every update or something?
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JayMix said:
Thanks yall, last question do CM updates work likestock roms or do i need to flash them at every update or something?
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Click to collapse
To update cm all you need to do is download new rom, boot to recovery, flash rom and gapps, wipe cache, reboot. Of course this only applies if the rom base hasn't changed, which is infrequent.
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Ok hmmmi think u might not be getting what i am saying lol sorry. What i am getting hung up over is does flashing wipe my data? And do cm updates wipe my data?
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JayMix said:
Ok hmmmi think u might not be getting what i am saying lol sorry. What i am getting hung up over is does flashing wipe my data? And do cm updates wipe my data?
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Click to collapse
If you are going to flash cm for the first time a wipe is required. Usually wipes aren't required when flashing a newer version of a Rom.
But will it wipe data automatically? No. Wiping data is an option you have to confirm in recovery.
Is that what you are asking?
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Thanks thanks i will be flashing cm soon, thx so much yall. Sent a donation to mskip for making it so easy to do all this.
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After root issues

After I rooted my n4 and I'm in stock rom with no mods or anything just cwm and unlock bootloader plus root. My phone will turn to a black screen and reboot is this normal?
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kdog1202 said:
After I rooted my n4 and I'm in stock rom with no mods or anything just cwm and unlock bootloader plus root. My phone will turn to a black screen and reboot is this normal?
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no.
it could also be an app, among other things. have you tried if after a factory reset, and a minimum amount of apps, it still continues?
No I haven't let. I only have a few apps downloaded. Including ROM manager and that's about it oh ya and Skype cud that be the issue?
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kdog1202 said:
No I haven't let. I only have a few apps downloaded. Including ROM manager and that's about it oh ya and Skype cud that be the issue?
Sent from my Nexus 4 using xda app-developers app
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Click to collapse
it could be possibly. could be rom manager as well(or other root apps). is there a certain situation when this happens? do you have the superuser or supersu app installed?
simms22 said:
it could be possibly. could be rom manager as well(or other root apps). is there a certain situation when this happens? do you have the superuser or supersu app installed?
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Click to collapse
It happened once when using Skype and once when browsing the web and I have the super su app installed
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It happens to me sometimes due to a faulty kernel. It happened on stock too though. It shouldn't really be a problem and doesn't happen often to me. It went away after a day or so anyways.
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try this, just as an easy possible solution.. boot into your custom recovery and wipe the dalvik and cache, nothing else, then reboot.

(help) reboot recovery fix SU.

hello everyone I have a problem and maybe others do to so this can be for how ever my need some help. I'm running a 4.3 pac rom and when I'm in recovery mode, I push the reboot button and it tells me fix SU (system/bin/.ext) then a yes or no bar I select yes. but never manages to fix. CAN SOMEONE HELP ME OUT WITH THIS? thanks
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gabriel31012 said:
hello everyone I have a problem and maybe others do to so this can be for how ever my need some help. I'm running a 4.3 pac rom and when I'm in recovery mode, I push the reboot button and it tells me fix SU (system/bin/.ext) then a yes or no bar I select yes. but never manages to fix. CAN SOMEONE HELP ME OUT WITH THIS? thanks
Sent from my Nexus 4 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
update your recovery
simms22 said:
update your recovery
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how do I do so I have the latest version of clockwork mod.
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look for their thread here, or google it, youll find it.

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