[Solved] nexus 7 random reboot - Nexus 7 Q&A, Help & Troubleshooting

So I've had an oddity happen out of nowhere. My N7 running stock 4.2.2, TWRP recovery, rooted and unlocked bootloader has been randomly rebooting itself since last night. At first when it happened, I was watching a movie through MX player app. The video started stuttering and then froze. I then tapped the home button so that I could clear the app and relaunch, and it then rebooted. I then tried to watch my movie with the archos app, same thing happened and it rebooted. Today it rebooted a total of 4 times, of those 4, it was just laying untouched, or while I was doing a backup with Titanium Backup. I've done a factory reset and cleared both cache & dalvik, and still the issue persists. Another odd thing is after the factory reset, it tried to update my G+ app, and told me that the app isn't compatible with my device. Would a complete reflashing of stock through ADB fix it, or am I looking at a hardware issue. Just to note, the device has been running excellent since last night. Any advice/help would be appreciated. Thx in advance for the help!
Update: so I reflashed the ROM and went back to factory and wiped everything, and had one reboot, which happened when I launched the new G+ app, and nothing since then. I even watched my movie and a couple tv shows. I'm not sure what was causing it, but if anyone can chime in, it would be helpful. Oh and how long after a reboot is the last_kmsg file valid? I read that it should contain info on what caused the random reboots.

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[Q] Verizon Tab won't perform factory reset

I have a Verizon Galaxy Tab SCH-I800 and I woke up today and it was missing some programs that I had installed the night before. Launcher pro keeps crashing so I had to put the Samsung Launcher back on. Now random programs all keep crashing and locking up the device. I performed a factory reset through settings -> privacy -> perform factory reset.
It restarts and goes to the samsung bootloader and I performed wipedata/factory reset.. It says it does it but when it restarts its in the same condition as before.
I've booted directly to the bootloader and tried it too (volume up and power key). I've also tried to wipe cache with no luck..
Any ideas? Can I root it and put a custom rom on it? I saw that there really aren't any roms for the Verizon tabs.. Any reason why?
Thanks for any help..
I just did a restore with all the stock verizon firmware using heimdall and it flashed and everything went through properly..
I booted into recovery and wiped data/cache and restarted...
SAME THING! It will NOT wipe out my existing data.. It restarts with all of my old programs installed and NOTHING will work.. The OS is hosed. How can I wipe this thing back to factory??
kgelso said:
I just did a restore with all the stock verizon firmware using heimdall and it flashed and everything went through properly..
I booted into recovery and wiped data/cache and restarted...
SAME THING! It will NOT wipe out my existing data.. It restarts with all of my old programs installed and NOTHING will work.. The OS is hosed. How can I wipe this thing back to factory??
Click to expand...
Click to collapse
Any luck with this? I'm having the same issue and don't have ODIN setup for it.
Same Issue
Same Issue
I changed my passwords on Facebook, Twitter and Gmail. After about 30 minutes the tablet finally stopped bringing up my information.
Need help!
Same to me...
I've tried to uninstall some apps several time, GTab automatically rebooted and these apps are still there...
Could anyone solve this issue?
Bump...
Bump...
I'm in the same boat..half my apps crash when you try to open them. I've wiped the data partition 3 times, and the cache as well..not avail. Apps are still on the device after a master reset!
scruffy828 said:
Bump...
I'm in the same boat..half my apps crash when you try to open them. I've wiped the data partition 3 times, and the cache as well..not avail. Apps are still on the device after a master reset!
Click to expand...
Click to collapse
I had that problem, and I wound up sending it back to Samsung. It appeared to be a bad part on the board, so they replaced it and it's on its way back now. Not the answer you want, I'm sure, but call it in and get your RMA number.
student.driver said:
I had that problem, and I wound up sending it back to Samsung. It appeared to be a bad part on the board, so they replaced it and it's on its way back now. Not the answer you want, I'm sure, but call it in and get your RMA number.
Click to expand...
Click to collapse
On your new Tab can you perform a hard reset and have it actually work?
my sprint Tab seems to be in the same boat

Weird behaviour on boot?

Hey,
The last time I updated Cataclysm I had some issues and needed to restore from a backup. Everything went fine afterwards and the phone is behaving normally as far as I can tell. But I am getting the "Starting apps" dialog on every boot. Is this normal?
I tried clearing cache and dalvik but, not only didn't it fix it, that "Upgrading apps" dialog that goes over all your apps on the first boot did not show. Shouldn't it show every time you clear the dalvik cache?
Thanks
It's normal.
Thanks. So the Starting apps dialog is normal. But shouldn't it optimize my apps every time I cleared the dalvik cache?
dastinger said:
Thanks. So the Starting apps dialog is normal. But shouldn't it optimize my apps every time I cleared the dalvik cache?
Click to expand...
Click to collapse
No not necessarily. If you have not changed or flashed anything.
Really thought that should happen. Oh well, glad everything is fine. Thanks!
I just got a Nexus 5 this past Wednesday and it has 6.0.1 on it, I did a Factory reset after the 6.0.1 ROM flash, On the first reboot it did "Starting apps" at boot for 2 seconds, Messed with stuff for a bit then rebooted didnt see the stating apps again, But after a day and a half I rebooted and saw the Starting apps at boot it lasted for about 5 seconds, So I rebooted just now to see if it would say it again but it didnt it booted right up without saying it.
It's weird im not sure why it does this, My Moto G 3rd Gen did this same bahavior when it was on Lollipop 5.1.1 but with that one it said "Optimizing Boot", Its like the longer you let it sit in between reboots it will do it, everything seems to work fine still but its very strange.
I just found it weird because I don't remember it happening before I restored a Nandroid. And it didn't happen on my Nexus 5 on 5.1.1. Well, truth is, everything is running fine so I won't worry too much.
Thanks for sharing your experience
Yeah same here

Updated my nougat and now my phone keeps rebooting after a minute of use

Hello. I have a Sprint s7e. Yesterday I updated my phone to the Nougat Beta and everything was going good. This morning I got a notification that an update was available so I accepted and it once it finished my phone keeps rebooting. It will fully load and within a minute of use, it will reboot. Even if I don't use the phone after the reboot, it will reboot in about a minute. Anyone else experiencing this? Possible fixes? I tried Safe Mode and it still rebooted. One mistake I made was I have items disabled with EZ Disabler which I forgot to re-enable. Ive done this before on Marshmallow and it never gave me any issues. Could this be the problem?
Is there a way to revert back to the older Beta Version, or even Marshmallow? Thanks
I would try a factory reset
Sent from my SM-G935P using Tapatalk
I would either try a factory reset or clearing the Cache. The last option would be a factory reset back to Marshmellow and then re-download the beta.
This happens on my wifes s7 edge. I assume its because of the (snapdragon 820) bootloader not liking root. Factory reset didnt solve issue for me because it threw up dm verity argument errors. Only thing that worked was flash combination firmware to completely wipe.
I had a similar issue. I would wipe data and clear cache. Start fresh. Android 7.0 vs 6.01 might have had compatibility issues or data corrupt caused bootloop. This is just my opinion. It sucks redoing everything, trust me. I had the Note 7 then got the s7 edge on Thursday, set it up on the stock 6.0.1. Then Friday found the Nougat beta and did my 1st download. It keeper rebooting constantly after It had finished set up.of course. So, I had to reset it up. I was able to go a day then reboot stuff happened again. So I data wiped and did it all over but this time I did not restore apps. I did fresh install and happy to report no issues thus far.
Sorry for long drawn out personal response, was just trying to share my experience in the event that it is useful to you.
Sent from my SM-G935P using Tapatalk
Has anyone had a problem with "Android Wear has stopped"? It started with the last update to PL3. I've tried clearing app cache and data as well as clearing cache from recovery. Hopefully the next update will fix it, but I've been wondering if anyone with a android watch has had a problem.

Nexus 10 (manta), Lineage OS 13, bootloop with Nova Launcher

Hi,
A few days ago I experienced a boot loop on my Nexus 10 with Lineage OS 13, build 20170909.
I broke it down to a recent update of Nova Launcher - going back to an older version and preventing Google Play automatic updates fixed it for me.
There are a number of reports of the same symptom pointing to Nova Google Companion, TeslaUnread, IFTTT, and Action Launcher.
I don't think this is an issue in those apps, but rather caused in the OS - an App should not be able to bring down the OS to a reboot (and even worse, due to the automatic restart of the launcher, causing a reboot loop).
any ideas of a fix in the OS? something else to prevent this from happening again?
Regards
sthones
I confirm the same. Constant bootloop with Nova Launcher
I am also experiencing this on an older version of CM13. Clearing cache does not work. Any quick fix possible via recovery?
stephendt0 said:
I am also experiencing this on an older version of CM13. Clearing cache does not work. Any quick fix possible via recovery?
Click to expand...
Click to collapse
I had the same problem with a Galaxy S3 running OctOS (CM13 based Android 6.0.1). The Nova Launcher update caused my phone to crash and reboot as soon as it was unlocked.
I was able to disable Nova in recovery (TWRP) using the built-in TWRP file manager. navigate to /data/app/com.teslacoilsw.launcher/ and delete base.apk. This will keep Nova from loading on startup but will not delete your data. My phone worked fine after that, albeit without Nova.
Thanks a lot, removing base.apk stopped the reboot loop.
My device has just started a bootloop too, but I don't even have Nova installed on it (though I do on my phone), just the stock launcher in CM / LineageOS.
I reset it to factory defaults and then it boots, but when it restores my old apps it starts looping again, so one of them is the cause. I didn't learn anything from the log via adb.
Any ideas?
I discovered it was one of my apps causing this. I removed it and it boots ok. https://play.google.com/store/apps/details?id=au.com.realestate.app&hl=en
hmoffatt said:
I discovered it was one of my apps causing this. I removed it and it boots ok.
Click to expand...
Click to collapse
Thanks for the hint, it was a real estate app from germany (immoscout24) which caused the problem at my device. Deleted the base.apk and everything works fine again.
Happening to me now, ffs im on the latest nightly and thats not fixed it.
TheRealSmurf said:
Thanks for the hint, it was a real estate app from germany (immoscout24) which caused the problem at my device. Deleted the base.apk and everything works fine again.
Click to expand...
Click to collapse
Same here.
daseddy said:
Same here.
Click to expand...
Click to collapse
Mine just started boot looping yesterday, but I hadn't installed any new apps in a while, and I have automatic app updating turned off (I also don't have any real estate apps installed, German or otherwise). Any hints on how to track down the culprit? Is there a boot log to look at?
Thanks!
Folks, there is a defect open in the official lineage bug tracking system. please add your comments there - maybe this needs some more support to get looked at:
https://jira.lineageos.org/browse/BUGBASH-1075
Same here. Started happening after it updated my apps yesterday. Removed nova launcher and all other Teslacoil software, problem remains. Can only start the tablet in Safe mode.
Seeing this on my device as well, except I am not able to remove the base.apk file because the app I installed somehow corrupted my bootloader such that I cannot get into recovery mode.
The culprit app? LinkedIn. Automatic app updates were turned off, and just before the bootloop started, the last thing I did was install that app. It finished, it rebooted, and hasn't stopped rebooting since.
When I put it into bootloader mode, it stops the continual rebooting and displays the "open panel" robot and "Downloading... do not turn off target". From there, all I can do is press power to start, then it goes back into rebooting. There is no way to get into recovery mode from there.
Also, attempting to keystroke into recovery mode just restarted the lineos infinite reboot.
Can't get into recovery, can't get the bootloader out of "Downloading" mode, and lineos continually reboots... Any wise sage souls have any ideas on this one? It looks like my device is bricked
It got me too - I don't have Nova Launcher installed. A few weeks ago the device started bootlooping with a build I had installed since september. I updated to one of the latest builds and had the same issue again. At the moment i got it working most of the time, but when i start certain apps it just reboots.
Seems to be independent to build version and can occur with different apps (at least thats what I've read here...).
Is this a Lineage Os 13 only thing or can I throw the device away now?
Greetings
I started having this issue this week as well. Oddly enough, I was still on CM12.1. In the middle of watching Plex and it rebooted, and has been boot-looping since. I did a factory wipe and while installing apps, it started looping again. I then installed the latest nightly of LOS13.1 and again, once it got part-way installing apps, it started boot-looping again. So this is not just a LineageOS thing, it seems to be an app update (I do have auto-update turned on).
I´m having the same problem without ever have the Nove Launcher installed. The bootloop started on my device several weeks ago. I tried to fix it by wipe partly or total and reinstall the latest nightly of los13 (20171126) and opengapps micro 27.11.2017 (and everything else).
As soon as I reinstall my apps, los goes back to bootloop. Sometimes, when I manually install only few apps, the system seems stable, until die next updates come by the play store.
So now I went back to stock rom until I´m getting aware of the problem beeing solved.
workaround, maybe
I wouldn'n call it a bootloop but rather a startloop
Anyhow, in my case I was able to break the loop by entering android's safe mode by simultaneously pressing vol up and down keys during startup. In safe mode, I was able to delete offending apps. After reboot, system is running again. Apps identified so far to make lineageos unhappy: open camera, yalp store, YouTube(!).., oruxmaps.
Removing offending apps works
Thank you!
I did the same with your advice... removed some apps and it works. I went back to September ROM, then update to Nov ASB ROM and it works fine.
ShevT is on it, here https://jira.lineageos.org/browse/BUGBASH-1052
and here: https://review.lineageos.org/#/c/197386/
Hope it gets fixed and merged soon... as this has been a pain the neck for a while, possibly related to a similar problem earlier this year.
loveandmarriage said:
I wouldn'n call it a bootloop but rather a startloop
Anyhow, in my case I was able to break the loop by entering android's safe mode by simultaneously pressing vol up and down keys during startup. In safe mode, I was able to delete offending apps. After reboot, system is running again. Apps identified so far to make lineageos unhappy: open camera, yalp store, YouTube(!).., oruxmaps.
Click to expand...
Click to collapse
I'm running CM13 and I have the same problem. I am not tech savvy with installing ROMs but managed to get to TWRP and did a reset to factory. Got part way thru optimising apps and the problem came back. I could only turn the tablet off via TWRP!
I don't mind going back to stock rom but not sure how to do it..best I look on here and start to educate myself..I'm 73yo so might not get finished before my time is up

Auto-rotate stopped working (temp fix, then keeps breaking)

Update: Still not fixed
I got a rooted LG V20 H918 still on nougat, I rooted almost a year ago with no problems. About 2 weeks ago, auto-rotate stopped working, I fixed it with a restart and about 3 days later it would stop working again and I'd use the same fix.
UNTIL, 2 or 3 days ago, it stopped working, a restart would't work and I searched the web all over trying every solution I could find and none worked. Then my phone got really hot and started restarting on its own every few minutes. sometimes its like a full restart and sometimes it feels like a soft reboot and much quicker. Everytime it would restart it would say "Android is upgrading 100%".
I then decided to go into TWRP and wipe the cache and dalvik cache, this was my SOLUTION. hurray! My phone took about 10 minutes to start after the dalvik cache wipe and Auto-rotate was finally working, my phone wasn't overheating, and everything was normal.
Until Today! It stopped working and restarting all over again I really don't want to have to keep wiping the cache and dalvik cache every 2 or 3 days.
Im thinking there is an app or something is stopping the gyroscope from working, so when i wipe the cache it temporarily works until it catches up again.
Any ideas on what I can do to find the culprit?
Edit #1: Cleared cache only in TWRP, didn't fix the problem. Just cleared dalvik cache waiting for reboot.
Edit #2: Just cleared Dalvik cache, still not working, now none of my solutions are working. Don't know what to do.
EDIT#3: I found my solution, the only reason I state it's temporary is because the last two things I did that fixed it only last a day or two. Although, I remember someone mentioning after they uninstalled nova launcher they never had a problem again. But I had Nova launcher forever and never had a problem, I think the problem for me started after I Installed the new version of Youtube vanced and micro G, so I disabled Nova launcher, vanced, and micro G. Restarted my phone and so far my auto-rotate works. Hopefully, this will be my permanent solution.
EDIT #4: Stopped working again.
TLDR: Found temp fixes, none work anymore. auto rotate don't work and phone restarts maybe every 5-15 min.
bump?
Interesting thread.
I have very similar problem with my G4.
Did you find solution for it?
I'm thinking of disabling gyroscope but don't know how!

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