Develop Bugs

[Q] random reboots in every ROM lg nitro hd i

Hi Guys
Well i have install several ROMS wich as HO!NO! full throtlle, Cyanogenmod 9 an 10 stables and Nigthly edition, JellyBam and others that i not even remember and all of them always in some point they just reboots and im really hate it. I use wakelocks app and it works for a few days but eventually it reboot and he battery drain really fast, 8hours in EDGE and just a little chatting on whatsapp and a few calls.
i always wipe system, datvilks etc, im kind of new on this stuuuf but i think im doing it correctly.
Im starting to think that maybe its a hadware problem. Onces i ask some crappy tech gay in a store and he told me that i should buy another battery i dont know why, i thought that he just want to sell me the battery but i dont know.
Can anyone help me or recomend a ROM or something?
I just want a ROM that doesnt reboot and good battery life and i can do normal stuff. i dont care about overclocking or anything like that,
Thanks in advance

I would install a stock rom, either stock AT&T gingerbread or ICS for the Nitro and see if it still reboots. If it does, I think you have a hardware problem.

itiskonrad said:
I would install a stock rom, either stock AT&T gingerbread or ICS for the Nitro and see if it still reboots. If it does, I think you have a hardware problem.
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I would go here first: http://www.att.com/esupport/article.jsp?sid=KB413885&cv=820
This will make sure you are 100% stock. Then if you are still having issues you know that it is a hardware problem. Just make sure you do a full wipe after install.
Sent from my LG-P930 using xda app-developers app

Sparcots miui ics port is the only rom that has zero bugs, black screens, or reboots for me. I've tried everything else.
Sent from my LG-P930 using xda app-developers app

Another potential issue is your SD Card.
I've also noticed lately that my Nitro sometimes randomly reboots. I run with the CM10 Nightlies. The other day, after installing a new nightly, it was really bad, almost constantly rebooting. I took out the battery, removed the SD card and let it sit for awhile (like 1/2 hour or so). Then I put everything back together, reinstalled the nightly and it's MUCH MORE stable now (still randomly reboots, but the instances are much less).
Give that a try and see if it helps at all.
Good luck!

Hi All!
I have LG P936 Optimus true hd with vodafone v20c firmware.
It`s regularly several spontaneous reboots per day. I saved logs with one reboot
03-13 17:03:41.993 F/libc ( 417): Fatal signal 11 (SIGSEGV) at 0x00000001 (code=1)
03-13 17:03:42.404 I/DEBUG (10445):
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how it can be solved? Help please!

My solution has been to just stick with Gingerbread.. No rebooting, good battery life even with the stock battery, runs all the apps I need.
I do miss ics/jellybean, but I rather have a stable phone with great battery life than a pretty, unstable bleeding edge phone.
If anyone wants to build an awesome gingerbread/ics hybrid.. Then I am down. Lol.
Sent from my LG-P930 using xda app-developers app

Can you tell what happened based on the logs?

two P930s (NItro HD), one with hardware issues
I have two P930s. One of them is much more sensitive to ROM settings and I find I need to limit the CPU to 1200 Mhz or so to prevent random reboots.
The other one works well at full 1500 Mhz speed. This particular model seems to have inconsistent hardware build quality. It makes me reluctant to try any other LG devices (a relative has an LG dishwasher that has also been troublesome, with random shutdowns and error codes).

possible causes
1 - bad sd card
2 - bad flash
3 - unstable recovery .
for me , i have noticed the same , and found it fixed once i upgraded my recovery

1 - bad sd card
its rebooting without sd card
2 - bad flash
its rebooting on two v20c firmware what I used
3 - unstable recovery .
I use official kdz firmware only, not cwm

I' ve got the same problem. I've changed the sd card but it didn't work.

Similar issues here with a Nitro that a friend let me borrow while I'm waiting for parts for my other phone. Random reboots on several different ROM's including stock.
I'm going to try Kernel Tuner and up the voltage a little and see if the phone is more stable. wistlo mentioned limiting the CPU to 1200 Mhz and I think he may be on the right track. If the processor cannot handle being clocked to 1500, which is stock, then a common method (at least with PC's) is to either lower the Mhz or increase the voltage. Or both.
I just tried this a few minutes ago and I'll report back later.

budroid said:
Similar issues here with a Nitro that a friend let me borrow while I'm waiting for parts for my other phone. Random reboots on several different ROM's including stock.
I'm going to try Kernel Tuner and up the voltage a little and see if the phone is more stable. wistlo mentioned limiting the CPU to 1200 Mhz and I think he may be on the right track. If the processor cannot handle being clocked to 1500, which is stock, then a common method (at least with PC's) is to either lower the Mhz or increase the voltage. Or both.
I just tried this a few minutes ago and I'll report back later.
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My phone was still unstable. I decided to try a stock Gingerbread ROM and it seems to run very, very well.

budroid said:
My phone was still unstable. I decided to try a stock Gingerbread ROM and it seems to run very, very well.
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Yeah, i remember downgrading to GB to root, didn't use it muchzbut it never once rebooted.
Bought mine last week on ebay brand new (packages sealed and everything), i let it fully charged and started using it.
Came with stock ICS and has been constantly rebooting for the past week.
If i didn't live overseas and didn't have to pay so much money to clear through customs here i would have returned it, but i'm stuck with it and searching for help.
Funny thing is i've gamed on it for hours straight and stability tests for more than 2 hrs and it never rebooted. Then i'll whip out the keyboard to type a message or install an app on play store...or simple web browsing and BAM!....reboots
I've changed to 3 SD Cards even tried without it, still reboots.
All wireless signals off, reboot.
Different ROMS/Kernels, factory reset/wipe, Battery cover off, diff. governors I/Os, Underclocks & Overvolts, tried it all....except going back to GB.
It kind of irks me to know that i came from a GB phone to upgrade to a "new" phone that can only run on GB stable.
It always crashes during some really "stressLESS" stuff, lol. CPU scaling problem maybe?
Also, with no SD Card installed and on boot i get a "SD Card damaged. Try Reformatting" error. Is it normal to get this error with no SD installed?

squatch04 said:
...
Funny thing is i've gamed on it for hours straight and stability tests for more than 2 hrs and it never rebooted. Then i'll whip out the keyboard to type a message or install an app on play store...or simple web browsing and BAM!....reboots
...
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Click to collapse
This definitely makes me think you've got a CPU scaling problem. If you're doing something consistent, like playing a game or stress testing...The CPU will likely stay at a single frequency...But in your case, once you start doing some other activity (which very likely caused a CPU frequency change), the reboot occurs.
Definitely try installing SetCPU and set both the minimum and maximum frequency to something midrange, like 1.2GHz. This way you're locking the phone to a single value (no scaling) and not the max frequency so you won't overload it. Then do what you usually do when it reboots and If the phone stays stable, you'll know the problem is likely an issue with CPU frequency scaling. If it still reboots, at least you've removed one possible reason from the list.

Namuna said:
This definitely makes me think you've got a CPU scaling problem. If you're doing something consistent, like playing a game or stress testing...The CPU will likely stay at a single frequency...But in your case, once you start doing some other activity (which very likely caused a CPU frequency change), the reboot occurs.
Definitely try installing SetCPU and set both the minimum and maximum frequency to something midrange, like 1.2GHz. This way you're locking the phone to a single value (no scaling) and not the max frequency so you won't overload it. Then do what you usually do when it reboots and If the phone stays stable, you'll know the problem is likely an issue with CPU frequency scaling. If it still reboots, at least you've removed one possible reason from the list.
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It was suggested in another thread that setting the governor to conservative 486 min 1404 max fixed the BSOD, so I tried it and haven't had a single reboot since I posted the last time. I was lucky if I got 30 min before trying it out.
I agree with you, definitely seems to be CPU scaling issue.
Conservative gradually increases the speed compared to the massive min to max spikes you'd get with ondemand.

I will try that with CM10.1 Rc2 with Wind Kernel. I got a few reboot when using my Calendar app for example, while low on battery.
Sent from my LG-P930 using xda app-developers app

radhames562 said:
Can anyone help me or recomend a ROM or something?
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Click to collapse
Try one thing: buy you a new microsd card and see if it helps

salimbaba said:
for me , i have noticed the same , and found it fixed once i upgraded my recovery
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Click to collapse
Tell me, plz, how can I do that? Now I have old 5.8.0.2 recovery. But since I dumped old 8Gb Sandisk and inserted 16Gb Sandisk I now had no reboots. But I want new recovery nonetheless

Battery improvement -

I just started using Dual SIM on my mobile and it seems battery consumption has doubled. I am on stock latest version.
Can people share their ways of saving battery apart from removing Samsung bloatware, rooting the phone !!

tharmor said:
I just started using Dual SIM on my mobile and it seems battery consumption has doubled. I am on stock latest version.
Can people share their ways of saving battery apart from removing Samsung bloatware, rooting the phone !!
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try under clocking!! download performance control and under clock whenever you fell you don't need heavy processor usgae till 1200....i know tha it changes by itself..but trust me its better when u do by urself!.....312MHz is enough when cell on stand by......call receiving and msgs work, though ui lags.....try battery saver apps....i never faced such issues as i did root on second day i bought my phone and third day i had pawitp 4.2.2 on my phone ..still ..give suggestion a try..hope it helps.

raghavsharmaxda said:
try under clocking!! download performance control and under clock whenever you fell you don't need heavy processor usgae till 1200....i know tha it changes by itself..but trust me its better when u do by urself!.....312MHz is enough when cell on stand by......call receiving and msgs work, though ui lags.....try battery saver apps....i never faced such issues as i did root on second day i bought my phone and third day i had pawitp 4.2.2 on my phone ..still ..give suggestion a try..hope it helps.
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Thanks but i am talking about dual SIM ROMs only ! So people who use dual SIM can you advise please ?

tharmor said:
Thanks but i am talking about dual SIM ROMs only ! So people who use dual SIM can you advise please ?
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if you are rooted
install setcpu or no frills cpu and simply set cpu governor to on demand or conservative and underclock upto some extent if you want
this trick will surely help you buddy

Poor battery life amnd heat with cyanogenmod and

When navigating Google maps my device gets fairly hot to the touch.
I am running cyanogenmod nightly with greenify to keep background apps down
In the past CM was always better battery life and lower temps. Has this changed? How do I get the best battery life out of my device? Flash another kernel? Go back to stock? Do I have a hardware problem?
Also my battery does not report 4900 mah in battery apps when fully charged. Any idea about this?
Thanks in advance!

Cyanogenmod cant take exynos octa and gets hot i had that issue couldnt fix had to go back to stock

rookie12 said:
Cyanogenmod cant take exynos octa and gets hot i had that issue couldnt fix had to go back to stock
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Click to collapse
So I may have solved my problem. I think you're right Cyanogenmod might not have a good setting for this CPU. Idownloaded kernel auiditor and switched to power save mode and underclocked the CPU and now I am getting ridiculously good battery life!
Loving this little tablet again.

berardi said:
So I may have solved my problem. I think you're right Cyanogenmod might not have a good setting for this CPU. Idownloaded kernel auiditor and switched to power save mode and underclocked the CPU and now I am getting ridiculously good battery life!
Loving this little tablet again.
Click to expand...
Click to collapse
can you share the steps and your settings?

berardi said:
So I may have solved my problem. I think you're right Cyanogenmod might not have a good setting for this CPU. Idownloaded kernel auiditor and switched to power save mode and underclocked the CPU and now I am getting ridiculously good battery life!
Loving this little tablet again.
Click to expand...
Click to collapse
Yea mate can you share

SayWhat10 said:
can you share the steps and your settings?
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rookie12 said:
Yea mate can you share
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Click to collapse
Sorry guys been busy.
So I am still on CM 12.1 nightly and getting good battery life now. Below is what I found helps:
1. Underclock and change CPU governor. This tablet haa 4 codes I believe 1900 mhz each. This is really overkill for most tasks. Your preference may vary for responsiveness, but I have settled on around 300-500mhz per CPU for my purposes. If you play games you can set profiles and turn up the CPU for those games if you like.
2. Install xposed framework - this is kind of a prerequisite for amplify and greenify
3. Install and configure greenify - this makes your apps chill and not use too much battery
4. Install and configure amplify - manages your wake locks and alarms so as not to drain battery
5. Install , tweak gravity box how you like it.
I think the biggest difference for me is the underclocking .. My tablet doesn't get hot when navigating anymore. I really couldn't deal with that because I'm thinking about the battery inside getting fried with heat. The other programs just add bonus battery and memory

This is interesting. I had also been on CM 12.1 and it was working pretty smoothly except the tablet at times got too hot to hold in your hand. It was also completely useless as a daily driver s it gave me max 2hrs screen on time (instead of 6.5 hrs) and for some reason it would take half a day to recharge the battery. Overall, not really very usable. I am now back on stock and took forever to unload all the samsung junk, optimize wakelocks etc, covert to F2FS etc. It is working OK now, but still nowhere near as smooth as CM12.1 was running on it before. Too bad because I love this tablet especially the fact I can just put my second sim card in and make phone calls etc (T705)
Can you maybe share what sort of general battery life you are really getting with the setup your described?
Clocking the CPU down to a 1/4 of the normal maximum speed seems very drastic, is it at all usable after?
Thanks!

What is the truth about the Android OS battery drain?

First, sorry for my bad English.
Everyone using ZF2 knows about what I'm talking about here: if you look at the battery graph in the settings, Android OS is probably responsible for most of the battery usage. :silly:
At first I was horrified about that, but then I realized something was off, something that I notice everyone is ignoring: Android OS drain is too high. I mean for me it's always 5 to 8 times higher than the second that is the Screen. The reality is that I can still have 4 to 4.30 hours of screen-on time, 3% drain for 7 hours of stand-by at night. So just think about it logically, what if we can make the Android OS work "normally", which is that Screen will be on top of the list and Android OS somewhere below, then how long my screen on time will be? You know what I mean? We are getting rid of a drain that is 5 times higher than Screen on the list! Does it mean our Screen on time will now be 20 hours???
So, I came to a conclusion that this issue may be in fact an error in the data. Maybe nothing was wrong but the Zenfone 2 team messed up the calculation for the battery usage and ended up showing a ridiculous result. what do you think about this?

3% overnight ? my phone get 1% ^^
srr my bad english

VinzNguyen said:
3% overnight ? my phone get 1% ^^
srr my bad english
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wow that's crazy, how is that possible for you do you think? :angel:
I'm using stock, disable most of the bloatwares but I'm keeping all Asus important ones such as power saver (I always set it normal however), start manager (disable all except OTTs and sms ... you know why).
Does that mean I'm partly right? If Android OS truely eats up so much battery power, how can we achieve such low drain during stand-by time? It's not logical :silly:

dongnguyen2301 said:
wow that's crazy, how is that possible for you do you think? :angel:
I'm using stock, disable most of the bloatwares but I'm keeping all Asus important ones such as power saver (I always set it normal however), start manager (disable all except OTTs and sms ... you know why).
Does that mean I'm partly right? If Android OS truely eats up so much battery power, how can we achieve such low drain during stand-by time? It's not logical :silly:
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Click to collapse
http://forum.xda-developers.com/zenfone2/development/script-zenui-debloater-v1-t3174541
i use Extreme v2 script.
i disable all app in auto-start manager
power-saver is normal mode.
i go to sleep 9pm ---> 6am. my phone just get 1% ^^
u can try this.
p/s: my phone ZE550ml. maybe your ZE551ml with 4GB ram , cpu 2.3GHz could eat battery life more than mine ^^
i really srr about my bad english

VinzNguyen said:
http://forum.xda-developers.com/zenfone2/development/script-zenui-debloater-v1-t3174541
i use Extreme v2 script.
i disable all app in auto-start manager
power-saver is normal mode.
i go to sleep 9pm ---> 6am. my phone just get 1% ^^
u can try this.
p/s: my phone ZE550ml. maybe your ZE551ml with 4GB ram , cpu 2.3GHz could eat battery life more than mine ^^
i really srr about my bad english
Click to expand...
Click to collapse
thanks for the link. However I don't want to root my phone, I just bought it a few weeks ago and I will keep it intact until I get Marshmallow, I used to be addicted to Rom Flashing and it nearly killed me haha. I can use the lists for reference, anyway.
Yes my phone is 551ML 4GB ram, probably that's why I have higher drain when stand-by. Because I have lots of experience with Rom modding I believe I'm not missing anything with my current settings.
Ps: your English is fine, don't worry :fingers-crossed: judging at your username I bet one penny that you're from the same country as me

how many times its been said..zenfone 2 stand by time is superb ...its when its use the drainage is fast..why fast because of incompatibility of zenfone 2 screen( cheap screen ?) and intels hardward... ...so no matter how you adjust it will never be a 2 days single charged phone. anyway ive had a nice experience with my zenfone 2 ..gave it to my brother and bought nexus 6...wanted to have 6 inch phone anyway....

dongnguyen2301 said:
thanks for the link. However I don't want to root my phone, I just bought it a few weeks ago and I will keep it intact until I get Marshmallow, I used to be addicted to Rom Flashing and it nearly killed me haha. I can use the lists for reference, anyway.
Yes my phone is 551ML 4GB ram, probably that's why I have higher drain when stand-by. Because I have lots of experience with Rom modding I believe I'm not missing anything with my current settings.
Ps: your English is fine, don't worry :fingers-crossed: judging at your username I bet one penny that you're from the same country as me
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i think so. bạn ở đâu ?? mình hcm kakaka

The main responsable in battery drains is usually not Android OS, but Google Play Services that screws everything

This issue has already been discussed to death all over the place in different forums. There are many reasons why the battery life is not good on ZF2 some of which are what you pointed out. The main problem is with 5.0 itself, this was and is a known problem, no amount of "tweaking" is going to fix a problem with the OS itself. This is why many people wanted the 5.1 update to no avail from Asus. Did it fix all the problems? No, it did not but it did stop a lot of the battery drain.

VinzNguyen said:
i think so. bạn ở đâu ?? mình hcm kakaka
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Click to collapse
same here, HCM, haha we can have a cafe some day haha

floridaman said:
This issue has already been discussed to death all over the place in different forums. There are many reasons why the battery life is not good on ZF2 some of which are what you pointed out. The main problem is with 5.0 itself, this was and is a known problem, no amount of "tweaking" is going to fix a problem with the OS itself. This is why many people wanted the 5.1 update to no avail from Asus. Did it fix all the problems? No, it did not but it did stop a lot of the battery drain.
Click to expand...
Click to collapse
I agree that 5.0 is not optimized and it's not the best, but people are talking like Android OS is a crimminal, I think that Android OS is just taking a bit of battery, but definitely not 5 times higer than the screen as explained above like instead of 5% of battery it is consuming 10%, it's not good, but not a disaster either :silly:

gipikay said:
The main responsable in battery drains is usually not Android OS, but Google Play Services that screws everything
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Click to collapse
it might be, I used to greenify Google Play Services, but on some phone it will lead to a lot of force closes. Supposed it's the cause, it also can't be 5 times higher then the screen, or else our phone won't be able to maintain >4 hours of SOT, isn't it? :silly:

No, 5.0 is and was a disaster. It had so many bugs it should have never been released

That is for sure...

GNEX over clocking questions

I've made a account for this post and sorry if I posted this in a wrong section,
I have a gnex running 6.0.1 android, and its only able to get to 1.65ghz.. But thing is my goal for this phone is to make it feel more faster and more "up to date" with the other phones out there.
I am wanting to use another kernel for over clocking, but I don't know if I have to switch ROMs as this kernel that supports 2.0ghz.. But it was released back in 2013.. GlaDOS kernel is the name of it supposedly.
Can I still use that kernel? And what other stuff can I do to the phone aswell? The phone works fine except it keeps crashing on my or freezing then reboots it self, then I have to take the battery out and back in to have it start up again. Also when ever I turn WiFi on on there it lags my phone like crazy, and drains my battery under 20-30mins I have no charge left.
Anyone have any suggestions or tips? Thanks!
And when it does work fine the temperature CPU, reach well over 70c.. great hand warmer in Canadian winters
I just want the 2.0ghz or anything higher than 1.6 as I need the performance. I can't stand having the phone lagg every day I use it.