Battery life on custom Rom and kernel - Samsung Epic 4G Touch

I have a quick question on why my battery goes from 50+% to 5-10% right away Its skipping all the percentage in between right now im on starburst Rom and the lost kernel i was having the problem when i had the stock kernel as well if anyone could explain the issue to me it would be greatly appreciated or help me resolve it
Sent from my SPH-D710 using XDA App

Just a guess but it sounds like the battery is not calibrated correctly. I'd say drain it with the phone on to dead (let android shut itself down) keep it off and fully charge over night. See if that helps I did a few tricks with my Phone and have not seen the issue come up at all lately. I would also maybe suggest going to a different rom and kernel (we do have newer ones )

Related

50ma battery drain on stock and cm7

Hi wildfire users,
my girlfriend got her wildfire yesterday.
The first thing I've fine, was to root it and check the standby battery drain.
It was between 27 and 50ma in AIRPLANE mode, without sometimes at 120??
My device got 1-2 in airplane and 3-5 without.
Thought it would getting better after flashing cm7, took the rc1...not really.
Any suggestions? Iam an experienced android user, but my options are running out, what else I can do.
What I've done:
Checked drain with current widget,
checked partial wakelocks with spare parts-seems okay.
Uninstalled all custom user apps I had installed.
Read here, that reflashing the radio fixes some issues...didn't tried that yet.
Any other ideas?
What drainages do you've got?
Waiting for your answers.
Edit: perhaps it will help to let it charge it to 100% and check again...maybe let it also discharge one time ^^.¿?
....think i was perhaps a bit over motivated...
Jan
Sent from my HTC HD2 using XDA Premium App
Battety drain will be above normal just after flashing a ROM. You need to make a full charge and then go to recovery and wipe the battery status.
Then do few complete charge-discharge cycles. Then it will be definitely better than stock rom. And use CPU settings in smart way. Work on the minimum setting and governor. Also depends on other factors like live wallpapers etc..,
Sent from my HTC Wildfire using XDA App
bharatgaddameedi said:
Battety drain will be above normal just after flashing a ROM. You need to make a full charge and then go to recovery and wipe the battery status.
Then do few complete charge-discharge cycles. Then it will be definitely better than stock rom. And use CPU settings in smart way. Work on the minimum setting and governor. Also depends on other factors like live wallpapers etc..,
Sent from my HTC Wildfire using XDA App
Click to expand...
Click to collapse
wow, thanks for the fast reply!
Got a similar thought - edited my post some secs ago : D.
thanks for the tip, my HD2 dont behave like that, so this was new for me.
...why i didnt ask that ealier here, got only 4 hours sleep tonight because of this behavior
Sent from my HTC HD2 using XDA Premium App
How does calibration the battery prevent from it from draining faster ?.
Suggest some thing that makes sense.
bynge said:
How does calibration the battery prevent from it from draining faster ?.
Suggest some thing that makes sense.
Click to expand...
Click to collapse
http://autom8r.com/2011/05/batterystats-bin-android-battery-calibration-explained/
Check this:
http://forum.xda-developers.com/showthread.php?t=1197800
bynge said:
How does calibration the battery prevent from it from draining faster ?.
Suggest some thing that makes sense.
Click to expand...
Click to collapse
Battery calibration gives accurate reading only, it will not improve the weared out battery.
When shifting between roms, the battery will not give accurate reading because not all roms utilize the battery in the same manner (Rom saves the details in batterystats.bin file). So, what if it gives wrong reading. There might be a possibility that it shows 100% even when not fully charged. So we think battery drains faster, but the fact is we haven't charged it fully. (correct me for any errors).
Sent from my HTC Wildfire using XDA App
Yes showing 100% wrongly must be the only situation where battery calibration be blamed. But 8-10 hrs of charging from deep-down-zero should definitely make it full, right ?
Whats your general time taken for charging in standby mode (WiFi, Mobile Data, Bluetooth Off).
I am experiencing heavy battery drain with WiFi, since I installed Sunabh ROM. (He adds a switch off wifi notification to hide this fault. Cunning.)
Any solutions ? May be re-flash the radio or change the kernel ?
Dude, attack the CID bug.
I resolved my issue without even switching of my phone once, let alone flashing anything.
Running for more than 2 days now. \m/

[Q] More info on the Android OS bug. Suspend process , wakelocks and battery life.

Hello all,
I first posted this in Q&A on the home forum. There doesn't seem to be any interest so I thought I'd post it here again. Below is what I wrote on the original post.
"If you’ve been supremely annoyed with the AOS bug like I have , here’s some interesting information I’ve found (Did a search and it appears no one else has found this yet). It’s a paper written (in 2010)by Rafael J. Wysocki which touches deep into the subject. What I hope is that it will help some developers understand this bug and ultimately integrate a work around / fix as soon as possible. Hopefully this will help some users understand what is going on with their phones as well.
I have and Epic 4g Touch and all the ROMS I’ve tried have this bug but according to the article, looks like a kernel problem. My suspend / events/0 processes runs for a long time, eating up cpu and I don’t have it as bad as some people but thought it's worth mentioning.
Basically what I get from the paper is that…
1. The suspend (and by association the events/0 process) process is Google’s implementation of a power management system, an add on to the Linux Kernel
2. That the wakelock / suspend feature is , to make a long story short , not working the way it’s supposed to.
3. “Poorly” written apps, or apps that are written without the inner workings of how suspend /wakelocks work, will trigger this bug. This can be ANYTHING.
4. Supposedly, kernel version 2.6.37 will fix this. The Epic 4g Touch kernels are all .35 as far as I know which explains the fact that so many Epic 4g Touch owners complain about this.
Would love for the smarter than me people to give their take on this?
Since this is my first post, it won't let me post a link. Do a google search for Rafael Wysocki suspend_blockers.pdf and it should be the first link that shows up."
Hopefully there's more interest here!
http://systemsens.cens.ucla.edu/~cs219/lectures/Suspend-Blockers.pdf
sent from the near past
Danial, thanks for the reply. Not sure if it was intentional but that's not the document I was referring to. However it looks like useful info and simplifies some of the explanations and even uses the the document written by Wysocki as a reference so thanks for that.
Bump! for battery life lovers!!!
how do I check to see if this bug is causing battery drain on my phone. thanks!
Sent from my SPH-D710 using Tapatalk
pcmanager said:
how do I check to see if this bug is causing battery drain on my phone. thanks!
Sent from my SPH-D710 using Tapatalk
Click to expand...
Click to collapse
If you go to Settings, About Phone, Battery usage, you'll see "Android OS" take an unusal amount of battery time. Mine varies from 25-80%, some others I've read, consistently get 80%. You should be running on battery for a while before you check this since if you've only been on battery for a few hours, that stats may be misleading.
A more precise way is also to download the free Battery monitor Widget, and in the statistics section, you'll see the processes "suspend" and "events/0" take hours of usage when it shouldn't. You also may see *wakelock* take up hours of time.
Some dwho have it bad, download watchdog, and monitor on the fly, which processes go over a certain amount of % usage. If your batter drains quickly, suggest this route to confirm its suspend and events/0.
thanks for all those great infos. my android os is usually under 10 percent after several hours of use so I don't think that is buggin me. Could you explain exactly what a wakelock is? I know I could use the search button but the info you provide here in this thread might help a lot of other people trying to resolve battery drainage issues. Thanks!
Sent from my SPH-D710 using Tapatalk
saejin2000 said:
Hello all,
Since this is my first post, it won't let me post a link. Do a google search for Rafael Wysocki suspend_blockers.pdf and it should be the first link that shows up."
Click to expand...
Click to collapse
I'm assuming you were talking about this site, which was the second search result:
http://lwn.net/images/pdf/suspend_blockers.pdf
As a side note, my Android OS is at 7% of my battery usage right now.
faceyourfaces said:
I'm assuming you were talking about this site, which was the second search result:
http://lwn.net/images/pdf/suspend_blockers.pdf
As a side note, my Android OS is at 7% of my battery usage right now.
Click to expand...
Click to collapse
May I ask,
1. How long your phone is on battery for?
2. Kernel Version?
3. ROM?
Would love to be @ 7% for Android OS!
1. How long on battery 1:15
2. Kernel Version EL29
3. ROM StrongSteve blue, Odex
4. Android OS 3%
I will let you know what the OS % is at the end of the day before the battery dies ......
Would love to be @ 7% for Android OS![/QUOTE]
Sent from my SPH-D710 using Tapatalk
pcmanager said:
thanks for all those great infos. my android os is usually under 10 percent after several hours of use so I don't think that is buggin me. Could you explain exactly what a wakelock is? I know I could use the search button but the info you provide here in this thread might help a lot of other people trying to resolve battery drainage issues. Thanks!
Sent from my SPH-D710 using Tapatalk
Click to expand...
Click to collapse
A wakelock is, as I understand it, a process in the Android kernel that temporarily tells the Android device to hold off sleeping (stop the suspend process).
This allows for a process , application or device (such as your wi fi antenna) to turn back on and do what it needs to do. The suspend process is suppose to tell the phone to go back to sleep but with this bug, either or can get stuck and therefore use up more cpu that it's supposed to.
pcmanager said:
1. How long on battery 1:15
2. Kernel Version EL29
3. ROM StrongSteve blue, Odex
4. Android OS 3%
I will let you know what the OS % is at the end of the day before the battery dies ......
Would love to be @ 7% for Android OS!
Click to expand...
Click to collapse
Sent from my SPH-D710 using Tapatalk[/QUOTE]
Interesting, I'm on EL29, have used Strong Steve's ROM but it still persists for me. Next thing I will try is to install Steve's ROM only, no additional apps.
I've gotten 2 days , 9 hours battery life (on light use, about 3 hours screen time, lowest setting) my last round but I've Juice Defender configured it to heck and undervolted as well. I think if I figure out what app may be contributing to this I just may get 3 days, may be 4 days battery life.
thanks for the info!
EOD report...
1. How long on battery 1:15
2. Kernel Version EL29
3. ROM StrongSteve blue, Odex
4. Android OS 3%
1. How long on battery 9:24
2. Kernel Version EL29
3. ROM StrongSteve blue, Odex
4. Android OS 21%
5. Display on 2:09
6. Percent battery left 29%
Not a great day for battery stats but i did change my modem from ek02 to el29 last night trying to solve a gmail keeps sending issue i am having. Last time i was on el29 it seemed to consume more juice so i switched back to eko2.
So i have system updates always running. When I go to try and update PRL and firmware etc, it gives me an error. I assume I need to re-flash a stock ROM, then update? I wonder if my problem is this: My used my phone for a few weeks, then ported over a new number. Under phone info, it still shows the original number. It uses the original number for a hotspot confirmation. But my phone clearly has a new number. Is this need for the phone to update causing the battery drain?
gk325 said:
So i have system updates always running. When I go to try and update PRL and firmware etc, it gives me an error. I assume I need to re-flash a stock ROM, then update? I wonder if my problem is this: My used my phone for a few weeks, then ported over a new number. Under phone info, it still shows the original number. It uses the original number for a hotspot confirmation. But my phone clearly has a new number. Is this need for the phone to update causing the battery drain?
Click to expand...
Click to collapse
PRL's (and profiles) should update despite having a custom ROM. Firmware won't however.
I think it's unlikely that the fact you can't update is causing a battery drain. To be sure, you need to find out which process the phone uses to do updates and see if they are taking up alot of CPU (OS monitor or battery monitor widget will help you with CPU usage.)
I think you simply have the OS bug like the rest of us.
pcmanager said:
EOD report...
1. How long on battery 1:15
2. Kernel Version EL29
3. ROM StrongSteve blue, Odex
4. Android OS 3%
1. How long on battery 9:24
2. Kernel Version EL29
3. ROM StrongSteve blue, Odex
4. Android OS 21%
5. Display on 2:09
6. Percent battery left 29%
Not a great day for battery stats but i did change my modem from ek02 to el29 last night trying to solve a gmail keeps sending issue i am having. Last time i was on el29 it seemed to consume more juice so i switched back to eko2.
Click to expand...
Click to collapse
Yeah your battery life is dismal but the Android OS percentage is not nearly what I would expect it to be if the bug was causing this.
I would at least try a free battery saving app if you haven't already. You could probably get a few extra hours out of it.
Might want to turn 4g off also and see how much more mattery life you get.

Battery drain even when arc is turned off

Hi
since a few time my arc s is draining battery in airplane mode at night (20-30%). I am using Arconium 3c.
- So I tried to come back to Arconium 2.4 (it was ok before) : the same (20-30%)
- So I tried to turn off the phone and the same : the battery lost about 20% during the night.
The battery drain used to be great in airplane mode (2-3% per night) few months ago when I started using arconium. So I don't think it is because of this rom.
Maybe my battery is bad? Or something else?
How old is the phone
In wich interval you recharg it
Check out the battery usage under settings and look if you have installed any program that uses much energy from ur battery
I think the easiest way is to try the other ROM first. If this problem still occur, maybe you have to check your battery
I also had that problem but with this stay good:
Use this kernel
http://forum.xda-developers.com/showthread.php?t=1680793
Use this Baseband
http://puu.sh/pAgX
Use this app https://play.google.com/store/apps/details?id=it.sineo.android.noFrillsCPU
For me is the best option
Well, thank for your answers. So the phone is 6 months old and I don't understand why if I change my ROM or my kernel it would do anything? Because the battery drain occurs even if my phone is off. Is there a way to check is my battery is damaged?
Tonight I will try to remove the battery for the night.
PS: I checked that I have no weird application that is draining battery...
jap check what happens if you put the battery out for a night
but you should even check the other kernel
jiffer1991 said:
jap check what happens if you put the battery out for a night
but you should even check the other kernel
Click to expand...
Click to collapse
Well, I am back to Arconium 2.4 (with .562 firmware) so the other kernel would not work correctly as it is for 4.1.B.0.431, would it?
I guess I should try .431 based kernel if I come back to Arconium 3c.
I have tried battery mix to check if there were an app draining my battery when phone is truned on but nothing (appart from system android) seem to consumes much battery.
Ok
well but if you really want to know what i think i would say (not assure) that it depends on the rom cus some time ago i had a2 different phones (galaxy spica and galaxy gio) wich i flashed to spicagenmod and the gio to cm7 and i recognized that the battery usage increased in a huge amount
u say that even if you turn of the phone it seems to be that you get a loss of power in your battery
the spica often crashed and i had to restart it (used many experimental features)and after the restart i had a huge los of batery power....
some roms have problems updating you the current battery status and if you restart it it seems that it had taken much battery
if you really want to safe power you may search for a undervolted kernel
Hope that really finished ur problem =)
Ok I think I understand what you mean about the voltage. ie at 100% the voltage is about 4178mv and now at 41% the voltage is 3775mv (with battery calibration app). So it seems to be not linear.
So I am going to flash kernel as recommended previously. And Do I have to reflash rom and baseband after flashing new kernel?
depends on wheather the kernel works with ur rom
what do you mean? I flash new kernel, reboot phone and if it does not work, I Reflash the rom? Maybe it risks to brick?
soad0 said:
what do you mean? I flash new kernel, reboot phone and if it does not work, I Reflash the rom? Maybe it risks to brick?
Click to expand...
Click to collapse
I dont think that there is any risk and thats what i meant flash kernel check if it works if not reflash rom =)
Download betterybatterystats and see what is causing the drain, think iridika did a thread a while ago, lemme find it for you
Edit: http://forum.xda-developers.com/showthread.php?t=1433309
Check what is causing the drain using that
I dont't think it would work when phoen is turned off..
And I am trying to flash kernel with flash tool and it does not seem to work, it is like I still got the previous kernel... any idea?
did u enter fastboot mode? did u get any error while flashing?
Yes, everything seems to work fine. Maybe I don't know where to check my kernel version.
go to settings..about phone...check about kernel.
soad0 said:
Ok I think I understand what you mean about the voltage. ie at 100% the voltage is about 4178mv and now at 41% the voltage is 3775mv (with battery calibration app). So it seems to be not linear.
So I am going to flash kernel as recommended previously. And Do I have to reflash rom and baseband after flashing new kernel?
Click to expand...
Click to collapse
Just an FYI
0% on the lithium battery is not 0v it is more like 3v or so... depends on the battery.
if a lithium battery measures 0v it is DEAD.
Pvy.
dinesh690 said:
Download betterybatterystats and see what is causing the drain, think iridika did a thread a while ago, lemme find it for you
Edit: http://forum.xda-developers.com/showthread.php?t=1433309
Check what is causing the drain using that
Click to expand...
Click to collapse
So I try this app and it appears that com.sonyericsson.android.server.dormant is guilty... about 2500 alarm wake up in 1h. so I used titanium backup to freeze fast dormancy...
But it does not solve my problem about battery drain when phone is turned off
soad0 said:
So I try this app and it appears that com.sonyericsson.android.server.dormant is guilty... about 2500 alarm wake up in 1h. so I used titanium backup to freeze fast dormancy...
But it does not solve my problem about battery drain when phone is turned off
Click to expand...
Click to collapse
As said earlier full charge the phone remove the battery and leave it out when you would normaly have it off to see if it is the battery or phone.
Pvy
Sent from my LT18i using xda premium

[Q] My Battery Life - Screenshots

Hi guys, I know there's a lot of battery related threads lately, but I've not been able to find a solution or explanation for my problems.
So last night I put my phone on charge around 10pm and went to sleep, I got up to go for a whizz during the night and saw that the light was green, approx 2.30am, so I disconnected the charger and left the phone on my desk and went back to sleep.
When I got up this morning I was quite surprised to see that my battery was down to 38%. This is the problem I've been having lately, rogue battery loss. I leave my "wi-fi on during sleep" set to never, and I believe the network was on 2g only (o2 UK), I'm running the Viper rom, with Nova Launcher and the Faux Kernel, not o/c or anything.
This is not the first time it's happened, so my question is, from looking at the screenshots, can anybody see an obvious culprit for the drain?
Thanks in advance.
Yeahp it's quite obvious that it's the android OS ... Some app is causing it to be awake ...
chaun1308 said:
Yeahp it's quite obvious that it's the android OS ... Some app is causing it to be awake ...
Click to expand...
Click to collapse
Yea I gathered that much, but what's the best way of narrowing it down? I've noticed in some other threads the guys have been asking for screenshots from better battery stats to help identify the problem. Did you see anything in what I posted?
try full a wipe of your system and then see the result.
If its working fine then install app one by one and see which app is causing the problem?
faiz02 said:
try full a wipe of your system and then see the result.
If its working fine then install app one by one and see which app is causing the problem?
Click to expand...
Click to collapse
Thats the best way to go. Did it twice. Helps everytime
Sent from my HTC One X

Bad Battery Life since KitKat

Hi Guys,
i have a bit of a problem with the battery in my GNex maguro.
I'm an avid Rom flasher, but when i have something that works well i usually settle with it for a while. So i flashed Cataclysm (http://forum.xda-developers.com/showthread.php?t=1995801) sometime in the last months and it was running great. Best bettery life i had so far.
Then with the release of Android 4.4 i looked for a rom to test it. I flashed XP (http://forum.xda-developers.com/showthread.php?t=2539201) and i really like the 4.4 changes.
But since then my battery won't even last a day in standby mode. I thought maybe it's an issue with 4.4. still, but even after flashing back to Cataclysm (newest release) i still had the same issues. I thought it may well be, that the final version isn't what it used to be, so i flashed another rom again. This time Purity (http://forum.xda-developers.com/showthread.php?t=2012706) aaaand... still the same problem. So now i'm pretty much lost. I also tried different kernels (lean kernel specifically) but to no avail.
My battery used to last 2+ days in idle mode. Now i can see my battery drop every minute. It barely holds over 10 hours. I already did a full phone wipe and flashed back to stock before installing cataclysm again but still no improvement.
I hope someone can help me here or point in the right direction.
Sorry if this topic already exists, but the search funtion doesn't seem to work right now and google didn't show something helpfull.
Thank you all in advance.
I don't know why you would still have bad battery life moving back to the original rom you used but.. on 4.4 it is most likely the new Google Now features that constantly listen for voice commands. Disable it by long pressing on an empty part of the home screen and go to settings. Slide Google Now Off and go to voice and turn off hotword detection as well.
I get great standby battery life on 4.4. I'm running the 11/29 ART build of cmetal(toro), 150ish hours of uptime without any issues so far.
Re: Bad Battery Life since KK
What kernel are you running? Are you just using whatever kernels come with each ROM?
I'll try turning off google now and the voice stuff and report back.
It still seems really weird to me, that the problem still persists after flashing back to 4.3. My guess would be, that 4.4 flashes something hidden that messes with the battery. But i don't know where or what.
Especially since it persists after a complete wipe (/data, /system and /cache).
Well, i'll see how it behaves without google now.
What kernel are you running? Are you just using whatever kernels come with each ROM?
Click to expand...
Click to collapse
Well i used mostly lean Kernel with 4.3 roms but i can't find any 4.4 kerneles besides CM. I have XP installed right know which uses CM Kernel.
Re:Bad Battery
Make sure your governor is set to interactive or ondemand...it could be seeing power drain from being set to one of the performance settings.
It's also possible that your battery is just going bad...do you have a backup battery you can try?
Well i used mostly lean Kernel with 4.3 roms but i can't find any 4.4 kerneles besides CM. I have XP installed right know which uses CM Kernel.[/QUOTE]
It could just be that you need to replace your battery. They are only good for so many charges and do degrade.
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Reporting back. After deactivating google now yesterday my battery is still ****. It's at 50% after 2h idle and 30 minutes screentime. Before the 4.4 flash it would be at around ~85-90% now. I suspect that 4.4 flashes something in some hidden partition that i don't have access to, that messes with the battery. Users on other boards report the same issues as i have.
dwoods1983 said:
Make sure your governor is set to interactive or ondemand...it could be seeing power drain from being set to one of the performance settings.
It's also possible that your battery is just going bad...do you have a backup battery you can try?
Click to expand...
Click to collapse
Just checked. Governor is set to interactive. It's also the default setting.
I sadly don't have a backup battery.
It could just be that you need to replace your battery. They are only good for so many charges and do degrade.
Click to expand...
Click to collapse
Could be, of course. But it's kinda weird that the decline is so dramatic and it has to be a pretty big coincidence that it just happend after a 4.4 flash. Seems unlikely to me.
edit: I'll order a new battery just to eliminate the battery as the source of error.
Mine is pretty bad but it's running google play to death so maybe gapps flash was bad? dunno
merid14 said:
Mine is pretty bad but it's running google play to death so maybe gapps flash was bad? dunno
Click to expand...
Click to collapse
this maybe issue of ram management.. try some good apps to control those background & foreground app from running without control. dont use any task killer.. please
i recommend using greenify.apk. donate version much better.
sorry for my bad english
galaxy nexus i9250
Same problem here. Since I flashed Kitkat on my phone, battery life isn't enough to last a day on standby. I tried installing another kernel (ASKP) but to no avail. Please keep in mind that I'm not very experienced with custom roms and rooting my phone. Does anyone have some good tips to improve battery life?
Update: After fiddling around a bit with better battery stats, greenify and a bunch of other stuff... i still don't have a solution. I made some screenshots of my stats, but can't post them here because i don't have permission to do that...
So i reflashed swordrune's cm11 rom and it seems to be working better with 1080p kernel w/o art enabled. i'm 11 hrs in with 80% battery on the extended battery (toro btw)
Un4s said:
Update: After fiddling around a bit with better battery stats, greenify and a bunch of other stuff... i still don't have a solution. I made some screenshots of my stats, but can't post them here because i don't have permission to do that...
Click to expand...
Click to collapse
are u sure greenify didnt helping??? already got rooted & exposed installer running??
can u state your screen on time??
usually gnex can handle 3-4 hour screen on depend on battery condition n phone performance... not include idle n stanby time.
galaxy nexus i9250
memaro_maro said:
are u sure greenify didnt helping??? already got rooted & exposed installer running??
can u state your screen on time??
Click to expand...
Click to collapse
Yes, i am rooted, but i didn't have the donate version of greenify. Bought it now and will test again.
Screen on time ~1:30h
Un4s said:
Yes, i am rooted, but i didn't have the donate version of greenify. Bought it now and will test again.
Screen on time ~1:30h
Click to expand...
Click to collapse
that will help.
if u lightweight user, i suggest u to optimized performance. use apps such trickster mod, rom toolbox, or in addition of any light battery saving apps ( for optimization)
should be improve on screen time.
galaxy nexus i9250
Not to hijack your thread, but I'm also experiencing battery issues after flashing the XP 4.4 rom. I did enjoy it but the battery drain was terrible. Not only that, for some reason my charger drains on a 1A charger but charges slowly on a .7A somehow. I only have 1 micro usb cable so I can't test if it's the cable and I can't find any apps to check the current speed. I tried downgrading and flashing to Slimbean but so far it's been no dice.
memaro_maro said:
that will help.
if u lightweight user, i suggest u to optimized performance. use apps such trickster mod, rom toolbox, or in addition of any light battery saving apps ( for optimization)
should be improve on screen time.
Click to expand...
Click to collapse
Ok, back again. hibernated every app and system-app that was running in background. Still wasn't getting better. I then saw the only services still running are google location services. I deactivated them now to see if these are causing it.
The biggest wakelocks i have are "wlan_rx_wake" which seem to be a known problem with KK:
http://forum.xda-developers.com/showthread.php?t=2519294
I then researched again and found several threads in google groups which describe the same problems that i have. Across several devices (though mostly Nexus 4, 5 and 7).
Google seems to be aware of that issue and is working on it.
Not to hijack your thread, but I'm also experiencing battery issues after flashing the XP 4.4 rom. I did enjoy it but the battery drain was terrible. Not only that, for some reason my charger drains on a 1A charger but charges slowly on a .7A somehow. I only have 1 micro usb cable so I can't test if it's the cable and I can't find any apps to check the current speed. I tried downgrading and flashing to Slimbean but so far it's been no dice.
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Yes, same for me. Charging is really slow since 4.4 as is the bootprocess of my phone. From the first vibrate when switching the phone on it takes ~10 seconds until the google logo pops up.
i dont know any about gapps issues bcoz not running any gapps in my phone since last year.
1. try searching for updated radio.img (baseband/ radio) if got any network issue.
2. try install trickster mod app. this app can help you for tweaking into deep sleep, also help for optimizing.
galaxy nexus i9250
crayjin said:
Not to hijack your thread, but I'm also experiencing battery issues after flashing the XP 4.4 rom. I did enjoy it but the battery drain was terrible. Not only that, for some reason my charger drains on a 1A charger but charges slowly on a .7A somehow. I only have 1 micro usb cable so I can't test if it's the cable and I can't find any apps to check the current speed. I tried downgrading and flashing to Slimbean but so far it's been no dice.
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try this for helping you go into deep sleep
galaxy nexus i9250
memaro_maro said:
try this for helping you go into deep sleep
galaxy nexus i9250
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Hmm I don't know if this is going to resolve the charging problem but i will try it and also try and use a battery calibrater and come back.

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