Develop Bugs

So is there no fix/ solution for random reboots?

I got my Nexus 7 when it first came out last year, rooted it, installed TWRP, and have been on several different ROMs since. Didn't have any issues with random reboots for several months. Early this year, I started having an issue where the tablet would freeze while I'm using it, then automatically reboot itself. I thought perhaps it was a problem with the ROM I was running, but I had switched ROMs a few times after that, and every single ROM I've been on since then has had the same problem. It usually only happens when I'm browsing the Internet (with Chrome being my browser of choice), but I've had it happen once while using the camera app, as well.
The other day, I upgraded TWRP to the latest version, and I installed the 4.04 bootloader in preparation for Lollipop ROMs. I was hoping on some slim chance that perhaps an upgraded bootloader might fix the problem, but I'm still getting random reboots.
I know I've seen people talk about random reboots as well, but in the past, I never saw anyone find any kind of solution. Is there one, or is it one of those things I just have to live with, at this point? It's odd to me that I didn't start experiencing this issue right away, and that it only started several months after I had had the device. To me, that makes it seem like it's not a hardware issue/ defect, but I guess no one has been able to pinpoint what the problem is, why it occurs, and how to fix it, huh?

mrw1215 said:
I know I've seen people talk about random reboots as well, but in the past, I never saw anyone find any kind of solution. Is there one, or is it one of those things I just have to live with, at this point? It's odd to me that I didn't start experiencing this issue right away, and that it only started several months after I had had the device. To me, that makes it seem like it's not a hardware issue/ defect, but I guess no one has been able to pinpoint what the problem is, why it occurs, and how to fix it, huh?
Click to expand...
Click to collapse
I'd tend to agree with you it's a software thing. However, my approach would be a bit more radical than yours: that I would erase everything, including formatting the internal storage twice (after making a backup, of course), then install a completely clean rom, use it for a while to make sure it doesn't act up again before restoring any apps.
On the side, I've seen a Nexus doing random reboots whose owner had opened the back and bent the cover somehow, which slightly depressed the power button. While the button operated normally, this condition forced it to "click" randomly, which caused the reboots. It stopped after the owner replaced the back cover. You might want to check this part. Good luck.

Most of the time, random reboots are kernel related. If you are overclocked try to set max CPU lower and see if the problem fixes itself. If you don't overclock try installing something like Trickster Mod, and lower max CPU to see if that helps. What ROM and kernel are you running?
Sent from my 2013 Nexus 7
"Until death, I will remain a Dirty Unicorn.."

I always recommend flashing back to stock to rule out software issues. If it continues, you've got a hardware issue.

I haven't really messed around with kernels, I've typically just used whatever was included in a particular ROM, and I never adjust to overclock or anything like that. I don't remember what all the ROMs I've been on are, but I've been on CM before, and I'm currently using CleanROM. I think the only time I ever specifically tried a different kernel was a while back, when I flashed an Elemental kernel, but I've since wiped and been on a different ROM.
For now, I'm trying to hold out wiping anything until a good, rooted build of Lollipop is available, at which point, I'll try wiping out everything, including internal storage, and see if that helps.
I guess I could also try flashing back to stock before I do that, though. I think I've seen one stock ROM for the N7 floating around. The only problem is, it's really hard to "test" this, because the reboots are very inconsistent. The other day, after I had updated the bootloader, I was browsing Chrome for over an hour before I got a random reboot. One time, I was browsing Chrome for an hour and had 4-5 random reboots within that hour. So, that makes it difficult to determine if it's fixed in a timely manner. :/

Alright, so now that there's a proper build of Lollipop out, I did a factory reset and wiped internal storage (twice), and I'm now running stock Lollipop. I spent about an hour or so getting everything set up, and no reboots thus far; but the reboots mainly occur when I'm using Chrome, and I didn't really do any browsing, as I was getting all my accounts and apps and whatnot set up. Hopefully within the next couple of days, I'll have used it enough to get a good idea as to whether or not I'm still experiencing issues.

So far, no reboots, though i don't want to jinx it, heh... I'll be glad if the issue is finally fixed, but I'll also feel kinda dumb that all it took to fix it was something as simple as wiping internal storage and/ or reflashing a stock ROM. Lollipop is pretty nice, as well.

Yeah I'm using a custom version of L myself. You need to flash custom kernel to get working root access with SuperSU BETA 2.19
Sent from my 2013 Nexus 7
"Until death, I will remain a Dirty Unicorn.."

Chime in if you recently are getting random reboots/bootloops/"optimizing apps"/etc

Chime in if you recently are getting random reboots/bootloops/"optimizing apps"/etc
Over the past few days my G4 has been infinitely more laggy that before, and then started getting random reboots, bootloops, and occasionally would "optimize apps" at startup multiple times in a row. When it shuts off on its own, 50%+ i have to do a battery pull to get it to start again and then it may bootloop or never even make it past the LG or the AT&T screen.
At this point my phone is unusable and a warranty replacement is on the way. It wont stay on for more than a few minutes tops. I'm getting fearful there is some flaw that is emerging if other people are experiencing the same thing around the same time.
This is on an AT&T 810, rooted on 10e firmware.
If you're also having issues, list your model/firmware as well.
Thanks,

yes!
I literally just had the same type of question haha! http://forum.xda-developers.com/g4/help/optimizing-apps-1-233-rising-t3224808
I have the H815, running on 10b firmware
Its so strange i hope someone can help!

Do you by chance have xposed installed? This started happening on my Note 3 after I updated to L and installed xposed. If not, I don't know the problem but if it's xposed, prolly have to remove it.

I had this happen to the point where the phone wouldn't boot up anymore, it would hang on Android, and then fade to black. I sent this issue to the sprint store and got a brand new LG G4 in 5 days. Just get warranty and say the phone won't turn on, and get a factory fresh LG G4 in a week or so.

pre4speed said:
Do you by chance have xposed installed? This started happening on my Note 3 after I updated to L and installed xposed. If not, I don't know the problem but if it's xposed, prolly have to remove it.
Click to expand...
Click to collapse
No xposed, basically nothing other than root
De_Falt said:
I had this happen to the point where the phone wouldn't boot up anymore, it would hang on Android, and then fade to black. I sent this issue to the sprint store and got a brand new LG G4 in 5 days. Just get warranty and say the phone won't turn on, and get a factory fresh LG G4 in a week or so.
Click to expand...
Click to collapse
Have a warranty on the way, my concern is the warranty phone will be on a later firmware with the anti rollback counter past the point of no bootloader unlock in the future. We shall see. Shame its working out this way.
Sent from my Nexus 7 using Tapatalk

Some ideas
YES. I joined just to post this reply lol. I have an unlocked H815 (Bought from Amazon, included documentation was in Czech, Slovak, and English) and I've been having this issue for weeks now. I couldn't find much on google and thought it was just my device, but now it seems more and more people are having the same problem. It is incredibly frustrating and it hurts.
Symptoms:
- Randomly (6-7 out of 10 times I want to use the phone for whatever) it'll throw itself into a reboot frenzy til it decides to stop doing it whenever, usually after 5-15 reboots or about 5-15 minutes.
- During the reboots, sometimes it'll reboot even before the phone boots up at all (on the LG boot animation).
- And for the times it does boot up, it'll reboot again within up to 20 seconds or so.
- Some reboots are immediate - phone shuts off and turns on again immediately randomly. But for some reboots, the phone freezes briefly before the reboot. On some of these freezes, there's a horizontal screen glitch at different heights every time.
- During the reboots the phone overheats considerably.
- The battery drains very quickly during the reboots. Percentage "skips" occur frequently.
- It also sometimes "optimizes" apps...
- The number of apps it needs to optimize for whatever reason can be different (I pulled the battery out several times when it was "optimizing", and the number would vary; though it did not boot at all until it finished "optimizing" apps, which took forever).
- Not sure if related, but just 3 days ago completely out of the blue overnight (no updates or anything) the camera developed a green blotch on the upper right-ish side too; seems to go away or get stronger depending on lighting. On google I found a Taiwanese H815 having an identical problem too so it can't be a hardware problem; also due to the fact that it almost immediately disappears when a different camera app is launched under the same conditions (such as Snapchat).
Device:
- Unlocked H815 European model.
- Kernel version 3.10.49
- Build number: LMY47D
- Software version: V10d-EUR-XX
- No root. No unlocked BL. All stock except the launcher (Nova). Plenty of storage space.
- Network is T-Mobile and have a 32GB MicroSD inserted.
What I've tried so far:
- Tried using the phone without SIM card. Did not help.
- Tried using the phone without MicroSD inserted. Did not help.
- Factory reset and immediate restore from LG backup. Did not help.
- Factory reset and no restore - only contacts. Seemed to work fine for almost a day, then problem came back. Probably a coincidence it ran okay for a bit.
- Since the phone overheated and the battery drained very quickly during the reboot spells, it stood to reason that the CPU was being stressed considerably. Most likely by some app or process obviously.
- Tried disabling some "stock" apps after a clean factory reset (the stock apps were the only apps on the device). Tried Google Play Services, and most other Google apps. Tried a few LG apps too. None worked.
- Tried updating some "stock" apps after a clean factory reset; same apps as above. None worked.
- From developer menu, enabled "Show CPU usage". The goal was to see what processes are running during the problem to see if it's associated with a memory leak or a CPU stress. No process seemed to stand out. No memory or CPU leaks as far as I could tell.
- Enabled event, kernel, main, memory, power, radio, and system log from hidden menu (277634#*# -> SVC Menu -> Log Service -> Log Enable). After a random reboot, copied log files to sd card from the same menu in hidden menu and tried to analyze them to see if there was a smoking gun. Logs are huge and I merely looked at the end of them, but to no avail so far. Interestingly though it seems the kernel log was cut mid-line on the last entry...
- I also noticed that after a factory reset, if you opt not to restore from a backup, the phone requires an internet connection to be set up. After the phone is ready for use, the Software version is listed as V10d-EUR-XX. The phone did not ship with this version. I believe it was V10a. For whatever reason, even after a clean factory reset, the phone runs the seemingly latest Software version. Not sure if this information is of any use, but it may be relevant.
I love this phone and when I got it, it was working absolutely flawless. Now with the software updates it seems it's just gotten buggier by the day to the point which it's pretty much unusable now, very disappointed. Hopefully this info will be useful to some of you out there.

Same here:
http://forum.xda-developers.com/g4/help/g4-bootloop-t3223130
TLDR;
-Not Rooted/Not BL Unlocked
-Reboots/Bootloops/Optimizing
-Resulting in "not fixable" Bootloop
-Phone in Warranty/Brought it back to retailer
-Don't know which Firmware
-H815 unlocked
-Messaged LG-Customer Service Conversation translated to english in Thread
Really not impressed by LG so far (First Lg Phone i own).

i think i'm gonna chime in....
these kind of things happened on my fellow G4 user here (H818P)
one of them have found and proven that on his V10D H818P, if the phone stays on for longer than 30 minutes, every reboot will start as optimizing apps
and one of them had worse luck: he was laying his G4 on his work desk and when he's about to open a newly arrived text message, the phone suddenly reboots and bootloops until no end.
thankfully one of them got the mainboard replaced, while one of them is still waiting for the warranty to be processed

Same issue is happening with my H815 now - unrooted and no modifications. Constant reboot loops or if it does boot up, it'll shut off randomly and go back to the reboot loop. Unfortunately, I have the Taiwan version and live in the US, so I think warranty coverage is not likely.

wow.. I just got this phone yesterday and i'm getting this bad. of course it was from a 3rd party seller... no fun
more info
tmobile
brand new
occured on 10h
updated to 10n and it's still happening (Update: Only happened once)
is this real life?
Update: I seem to have gotten past the problems after updating to 10n. Now running stock debloated 10n rom with no reboot issues (so far)

R.Suave said:
wow.. I just got this phone yesterday and i'm getting this bad. of course it was from a 3rd party seller... no fun
more info
tmobile
brand new
occured on 10h
updated to 10n and it's still happening (Update: Only happened once)
is this real life?
Update: I seem to have gotten past the problems after updating to 10n. Now running stock debloated 10n rom with no reboot issues (so far)
Click to expand...
Click to collapse
v10n?? Is that even released for the h815? Are you rooted?

yankeetr said:
v10n?? Is that even released for the h815? Are you rooted?
Click to expand...
Click to collapse
v 10n on Tmobile. Sorry I didn't specify. I am rooted but it's also reported happening on un-rooted G4s

Nexus 5X reboot problems

If you're having reboot problems please post here - if there are problem apps or bad devices out there it would be good to know!
Got a new Nexus 5X yesterday for my partner. Plugged it in and charged all day (oh what patience). 10pm started setup and added account to it. Phone immediately did an update which succeeded. Then it started to install the saved apps from the Google account, about 50 in all. After all the apps were installed I handed it over to her to play and log into all those apps with logins. Tedious.
Within about 30 minutes she tried to take a photo and it rebooted. Then a bit later she was using it and it rebooted again. Before going to be it rebooted a few more times. Then again this morning. There wasn't one particular app or other that was in use when these crashes happened. During the day she saw a message about "Google needs to restart". Also the camera often comes up with an all black screen and can't be used.
I called Google tech support and they wanted to do a factory reset and maybe a cache partition wipe. They would also like to investigate if a rogue app is causing the crashes by using it without any apps installed. Because reinstalling apps is so tedious I decided to have her do a cache partition reset I'm awaiting news. I'm hoping we don't have to do the other... I can't imagine how a bad app could be causing such repeated crashes (well I can, but it just shouldn't happen). That's lame...
It would really help if it was easy to get a crash log and find out the cause - unfortunately unless you're rooted this doesn't seem to be easy, and may well be impossible.

I've been having a lot of similar-sounding issues with my 5X. It's never rebooted while I was using it, but once or twice a day I'll pull it out of my pocket and it will be off, awaiting the unlock pattern to boot up.
The camera has been atrocious as well. I've seen the black screen you describe, tons of rotation lag, hanging, etc. Not just in Camera, but in other apps using the camera (such as when attaching a photo to a Hangout). Hoping this is something software-related and not a hardware problem.

I've had mine spontaneously reboot twice so far, both times I've pulled it out of my pocket and it required the PIN to unlock, then it booted up. I'm a bit concerned, as I have no idea when this happened, and, since it's encrypted a reboot essentially puts me offline until I notice it.

I just now had mine reboot during active use for the first time. I was long-pressing a wifi network in order to forget it (which is another 5x problem I keep having—wifi turns itself off or connects to the wrong networks).

My 5x was working fine and the crashing started happening yesterday...
they only app that i recently installed before the crashes started was firefox... are you guys using firefox by any chance???

Mine is still working fine, I do not have Firefox.

Same problem for me when using Firefox. The phone seems to crash and reboot when loading news websites containing photos and videos.
Not seen the issue when not using Firefox.

I've had my nexus 5x since mid/late November 2015. I've had the problem described below happen prior to today, and more than once.
Today, I cant turn my phone off - it seems to be in the middle of a reboot... the four coloured circles (google logo?) with colours going round and round. I powered it off cos it had started going slow... thought a reboot might fix the problem... but now its not starting and I cant even turn it off or do anything with it.. I've tried pressing the power button, I've tried holding the power button down, and I've tried different combinations... nothing seems to make a difference... (has been in that state of un-useablity for at least 30 mins now)
Anyone else also having wi-fi issues where facebook has an error and "cant connect" ?

I had the same thing happen and returned the phone, it's the only solution I found. I factory reset multiple times, called up Google and they told me to safe boot. Right.. I was completely stock and it rebooted multiple times / day and I know what I'm doing too, for the most part anyway. Got a replacement device and it has not once rebooted no matter what I do. Camera, Chrome random apps caused a reboot, it's not that. It's a defective device and you need to get it replaced period.

I have the same thing and can't sent it back to google because I live outside the US.
I believe it is a manufacture defect as I tried everything with no success really annoying.
Stuck with a brick...
Sent from my Nexus 5X using Tapatalk

I used my phone completely stock for weeks and had zero issues, whereas I have a friend who ordered and received the phone at the exact same time (likely same mfg batch) and had issues. Difference between us two is that I'm a minimalist and only have about 50 apps installed, and he has a ton that he rarely uses and restores them every time.
I know it seems ridiculous, but having an android phone gives you more customization and your apps more power of the phone, so it's completely feasible for ONE rogue app to destroy performance and/or battery.
You guys might all want to try uninstalling apps one by one and figuring out which apps are killing performance. In particular, check out the running services (developer options -> running services) and see which apps are constantly running, since those are more likely to be the ones causing issues.
For example, I've used firefox (for adblocked browsing) for weeks recently, and can definitely say it's a pretty slow app, so if you're having issues on it, you may want to just use chrome or lightning browser.

I just ordered a replacement as well. Mine would reboot about 1 to 2 times a week right after the fingerprint unlock. Annoying as hell today because I was in the middle of a conf call.
Sent from my Nexus 5X using Tapatalk

#brickgate

Hi everyone, I had some strange behavior with my note 7 last night, it locked up for abou 10-15 seconds and then rebooted itself and got stuck in a bootloop, it looped through the first boot screen for around 10-15 cycles and eventually managed to boot up, I kept having random reboots and bootlooping for the next hour or so, I suspected it could be the stock browser as it seemed to be what I had open when most of the reboots occurred so I disabled it with EZ disabler, I haven't had any trouble since last night and I have re enabled the stock browser a day still don't seem to have any problems yet. I googled it and found that apparently a lot of people with the exynos variant are having similar issues, I read somewhere that it was the July date coded models that had the issue but mine is an August coded model, does anyone know anything about this?
Edit, its possible that downloading or updating apps might have something to do with it.

Mine does this and has been doing it since day 3 of my 10 days of having it.
What I'm gathered, any form of lag that corresponds with the vibration motor causes the reboot - so if you touch the back button one too many times or hitting the menu button; heck, sometimes it even just reboots when I'm scrolling in anything and there's some lag (both Chrome and stock browser as well as Whatsapp/Playstore).
I talked to my Telco and they said they'd replace as it's a clear defect but there's no stock unfortunately for an instant swap. I'm about to switch to the international XSA firmware (Currently on OPS Optus firmware) to see if that does anything since the XSA had a recent update relating to performance issues. If it is a defect it won't do anything and the best bet is to go into store and send it off while they order a new one.
Mine's begun to do it more frequently now. Sucks that this is the experience of a first time Note user :'(

Google Pixel XL repeated freezes no idea what's going on

Getting repeated freezes on my Pixel XL. Had it since November. I've got about 20GB still free on the device, so it shouldn't be a storage issue. It seems to occur most when I open or am switching apps. I put the phone into safe mode for a few hours just to see if I can recreate this without any third party apps. It's PROBABLY an app that was never updated properly for Nougat or something but I am having a hard time trying to get logs etc since the device is stock and unrooted. I did pull a bug report maybe someone here has a clue what to look for. I've had 2 freezes today and 3-4 yesterday.
https://mega.nz/#!S8EGTKyQ!XX0DfWaukkzcnSOOBvYk23KNFeaR1Ok4yUxmwxFN8gU

My phone has also been constantly freezing and restarting for the past two weeks. It started out of the blue, No idea whats causing it, but it is really frustrating.

Are you guys on the may update? I never took the update and after about a week I don't see it anymore when searching for new updates. Don't know if they pulled the update cuz of all the recent problems. I'm not having any freezing issues though, rooted and stock on April.

Mine is also repeatedly freezing and restarting itself.
Strangely, though, it's nothing I'm doing... Because it will sometimes do it whilst sitting beside me on my desk. (I'll be ignoring it, "working", and suddenly I'll hear that little piano that plays when it boots, and glance over to see it halfway through restarting)
I am on the May update, but this started happening about a month ago. It's tricky, because it's intermittent, so I doubt sending it away for repair would yield a result.

Some XL 128gb pixels have faulty nand chips. The issue happens once the nand reaches a certain capacity. Not sure if that's your issue or not. If yours is 128gb id give Google a call for a replacement.