Random reboots after Andorid 7.0 Nougat update

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Cheesejam

Senior Member
Aug 24, 2010
142
6
I took the plunge to Android 7.0 Nougat, however I am having some major problems. Initially I had everything stock, and every once in a while my phone would reboot when on WiFi. Sometimes it rebooted within 5 minutes of booting back up, sometimes it would reboot 1 hour after booting back up. There is a whole thread about it here (note: not the bootloop issue occasionally talked about in that thread, although it could be related I guess): https://productforums.google.com/forum/#!topic/nexus/kaMOvuf093Q

I was wondering if anyone else has run into this issue? It definitely seems to be linked to WiFi only. A bunch of users apparently narrowed down a few apps that triggered the reboots more frequently (Napster, for example), but the problem seems deeper than just a rogue app. Safe mode does seem to alleviate the issue, but this is not really an acceptable solutions to me. I tried another kernel (Franco's), but that didn't fix anything. I was wondering if anyone who had this problem had any success fixing it by changing ROMs or kernels? I also read that turning off WiFi scanning may also help--I will report back if this fixes anything.

Any suggestions welcome, thanks! :)
 

gingus7

Senior Member
Jan 3, 2013
96
10
This could be part of the hardware issue that is happening, it talented to me and I finally have my phone back


Sent from my Nexus 5X using Tapatalk
 

ashokabs

Senior Member
Mar 9, 2011
168
79
New Delhi
Which Model of LG 5X?

Do you have H-790 or H-791 Model?

I took the plunge to Android 7.0 Nougat, however I am having some major problems. Initially I had everything stock, and every once in a while my phone would reboot when on WiFi. Sometimes it rebooted within 5 minutes of booting back up, sometimes it would reboot 1 hour after booting back up. There is a whole thread about it here (note: not the bootloop issue occasionally talked about in that thread, although it could be related I guess): https://productforums.google.com/forum/#!topic/nexus/kaMOvuf093Q

I was wondering if anyone else has run into this issue? It definitely seems to be linked to WiFi only. A bunch of users apparently narrowed down a few apps that triggered the reboots more frequently (Napster, for example), but the problem seems deeper than just a rogue app. Safe mode does seem to alleviate the issue, but this is not really an acceptable solutions to me. I tried another kernel (Franco's), but that didn't fix anything. I was wondering if anyone who had this problem had any success fixing it by changing ROMs or kernels? I also read that turning off WiFi scanning may also help--I will report back if this fixes anything.

Any suggestions welcome, thanks! :)
 

arjunprabhu

Senior Member
Aug 9, 2008
61
13
has been happening to me too -- reboots randomly about once or twice a day. (only realize it since fingerprint scanner does not work and i am forced to key my passcode at first login post reboot).
 

ashokabs

Senior Member
Mar 9, 2011
168
79
New Delhi
Nexus 5x reboot problems

Yes it would appear so. However, I have read one post in Google Forums that speaks of problems with H791. However, it could be related to the wifi problem. There are two problems - one is problem booting initially and finally phone does not boot into the ROM and cannot be recovered. This seems to be related to hardware problem in H-790 series. The other has been isolated to the WiFi scanning which causes a crash.

It seems that the H 790 production series are faulty
 
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Cheesejam

Senior Member
Aug 24, 2010
142
6
Yeah, I am definitely having a problem with the WiFi crash. Would a custom kernel fix this? A custom ROM would, right? Any ideas for a fix for this?
 

giannism13

Senior Member
Nov 22, 2013
239
42
22
Skyros
Yes it would appear so. However, I have read one post in Google Forums that speaks of problems with H791. However, it could be related to the wifi problem. There are two problems - one is problem booting initially and finally phone does not boot into the ROM and cannot be recovered. This seems to be related to hardware problem in H-790 series. The other has been isolated to the WiFi scanning which causes a crash.
I have read the same too, but he's the only one among the hundrends of h790 users who have the same problem.

Yeah, I am definitely having a problem with the WiFi crash. Would a custom kernel fix this? A custom ROM would, right? Any ideas for a fix for this?
You could try too, but I doubt it will fix anything. Its a hardware problem
 

Cheesejam

Senior Member
Aug 24, 2010
142
6
I have read the same too, but he's the only one among the hundrends of h790 users who have the same problem.


You could try too, but I doubt it will fix anything. Its a hardware problem

I thought the bootloop issue was hardware related, but not the random reboots issue? Ex: Safe mode fixes the problem for me.
 

sfhub

Senior Member
Oct 23, 2008
5,342
7,217
There are two problems - one is problem booting initially and finally phone does not boot into the ROM and cannot be recovered. This seems to be related to hardware problem in H-790 series.
IMO opinion this is just the eMMC dying problem that people have reportedly sporadically over the past 12mo. That problem has affected both H790 and H791. It likely just became more likely to show up after the 7.0 update because that was a large update, but by no means is a large update going to cause the problem by itself. The core problem is eMMC that was waiting to fail and could have happened just when web browsing but a large update just pushed it over the edge. Some phones you can do many large updates and never see a problem, then boom, one day randomly it just reboots and bootloops, with no amount of flashing or resetting making any difference.
 
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snipinu

Senior Member
Oct 8, 2007
96
6
Tn
I have a h790 nexus 5x and haven't seen this issue, knock on wood. However if it's linked to wifi scanning that was issued in another post you may try disabling wifi scanning to see if the issue is resolved. If not it's definitely the emmc in my opinion

Sent from my Nexus 5X using XDA-Developers mobile app
 

giannism13

Senior Member
Nov 22, 2013
239
42
22
Skyros
I really wish Google would fix this, this isn't really an acceptable solution to me. :/
If it is indeed not a a hardware problem, then don't wait for Google to fix it overnight. Besides, it may be the case that there is no bug at all, and you flashed a corrupted firmware. Your Best bet right now is to try some custom Roms and kernels and see if it fixes the problem. If you don't want to mess with user made firmware then I would suggest you to reflash the latest stock image form Google. If both of the above fail, the you are forced to roll back to marshmallow
 

shredzone

Senior Member
Jul 30, 2012
54
5
Cologne
After the Nougat upgrade, I was having random reboots on my 5X (LG-H791). It always happened when my 5X was sleeping (laying on my working desk or on my bedside table for some time). After the reboot it was working fine again for some hours, so it does not seem to be the bootloop issue. I remember that I had a few rare reboots after upgrading to Nougat 7.0, but after the last 7.1.1 upgrade the reboots occured at least every second day.

Last Friday I had enough of it. I downgraded to the last stock Marshmallow 6.0.1 (MTC20K), and it didn't crash a single time after that.

My wife's 5X is having the same random reboots. The reboots are less frequent (but still occur) when WLAN is turned off. I will downgrade her's too, if my 5X is still still stable after the next weekend.

I wonder if this is a different problem, or if this is just a first symptom of the bootloop issue. If it's a bug in Nougat, then shouldn't much more (if not all) 5X owners experience these random reboots?
 

hudaifah

Member
Oct 11, 2016
15
1
I took the plunge to Android 7.0 Nougat, however I am having some major problems. Initially I had everything stock, and every once in a while my phone would reboot when on WiFi. Sometimes it rebooted within 5 minutes of booting back up, sometimes it would reboot 1 hour after booting back up. There is a whole thread about it here (note: not the bootloop issue occasionally talked about in that thread, although it could be related I guess):

I was wondering if anyone else has run into this issue? It definitely seems to be linked to WiFi only. A bunch of users apparently narrowed down a few apps that triggered the reboots more frequently (Napster, for example), but the problem seems deeper than just a rogue app. Safe mode does seem to alleviate the issue, but this is not really an acceptable solutions to me. I tried another kernel (Franco's), but that didn't fix anything. I was wondering if anyone who had this problem had any success fixing it by changing ROMs or kernels? I also read that turning off WiFi scanning may also help--I will report back if this fixes anything.

Any suggestions welcome, thanks! :)

hi, i had the exact same problem with my nexus 5x from carphonewarehouse (uk), and when it was given in to repair i was promised money in return, however they ended up refusing to give money and gave a replacement phone instead, the only way to fix this issue is apparently to get a replacement, as it is most likely a hardware issue google haven't accounted for
 

exninja

Senior Member
Nov 5, 2015
66
14
Arizona
I've had the random restart issue for a while now. I got a "new" replacement in November for a different issue and have been on 7.0 the whole time (until last week when I got 7.1.1 OTA). I'm going to call today about another replacement. I've just had two restarts in the last hour.
 

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    Nexus 5x reboot problems

    Yes it would appear so. However, I have read one post in Google Forums that speaks of problems with H791. However, it could be related to the wifi problem. There are two problems - one is problem booting initially and finally phone does not boot into the ROM and cannot be recovered. This seems to be related to hardware problem in H-790 series. The other has been isolated to the WiFi scanning which causes a crash.

    It seems that the H 790 production series are faulty
    1
    There are two problems - one is problem booting initially and finally phone does not boot into the ROM and cannot be recovered. This seems to be related to hardware problem in H-790 series.
    IMO opinion this is just the eMMC dying problem that people have reportedly sporadically over the past 12mo. That problem has affected both H790 and H791. It likely just became more likely to show up after the 7.0 update because that was a large update, but by no means is a large update going to cause the problem by itself. The core problem is eMMC that was waiting to fail and could have happened just when web browsing but a large update just pushed it over the edge. Some phones you can do many large updates and never see a problem, then boom, one day randomly it just reboots and bootloops, with no amount of flashing or resetting making any difference.
    1
    I thought the bootloop issue was hardware related, but not the random reboots issue? Ex: Safe mode fixes the problem for me.
    If safe mode fixes the problem, then I was wrong. Try to find which app conflicts with the system and uninstall it
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