Develop Bugs

Android system - partial wake lock - one solution found

I have my phone running 99.6% of the time in spare parts and it shows android system as the culprit holding a partial wakelock.
so my question is, how do i fix this? i've tried a factory reset three times, am updated to 1.21 ota and have slowly started to reintegrate apps but it always starts again and always after a different app.
i'm getting pretty frustrated anyone got any ideas?
UPDATE In my case it was network time abusing wireless location service that was causing the problem and hence the reason a factory reset didnt solve it, i switched off network time and voila!

just to clarify, no live wallpapers, and phone is in airplane mode to avoid any data usage drainig the battery.
i have got beautiful widgets homescreen small clock and pure cal widget installed at the moment but even when i uninstall them it doesnt fix it, also im running launcher pro 0.4.2 but also had the problem when i reverted to sense.
and i have read every other thread here about battery life that i could find but no-one seems to have this problemo

anyone with any advice on why my phone wont sleep?

A long shot, but go in to Mobile Settings and untick Enable always-on mobile data.

Philosoma said:
A long shot, but go in to Mobile Settings and untick Enable always-on mobile data.
Click to expand...
Click to collapse
ok cool, giving that i try now but i had been leaving it in airplane mode to try and take the vagaries of data out of the equation.
this started about a week ago and i really noticed it when i was in a 6 hour long meeting and my battery basically draines 60% even though the phone was in airplane mode

ok tried that but with my phone just factory reset, airplane mode and no apps installed other than spare parts it's showing running 94.1 % of the time and all of it is android system.
that cant be right
i have restored data, maybe i shouldnt restore data either but that just seems plain crazy

Re: Android system - partial wake lock
What exact foreground and background processes/services do you have running when this is happening, any idea?
Apps like System Panel can show you them and some useful other details. That is certainly too high.
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- Sent via my HTC Desire -

th3 said:
What exact foreground and background processes/services do you have running when this is happening, any idea?
Apps like System Panel can show you them and some useful other details. That is certainly too high.
-------------------------------------
- Sent via my HTC Desire -
Click to expand...
Click to collapse
ok right now there is
com.android.syncml.service
sense
market
messages
people
rss reader
syncml provider
sys panel
touch input
updater
and then a load of inactive cached applications
do you see anything unusual there?

ok so i downloaded system app and killed all apps except excluded and sytem apps and my running usage has gone down, now thats no suprise in and of itself but now i need to see if it stays down.
i've just checked again and the percentage is still going down, so it's either an inactive app which i didnt list ( is that even possible if its inactive) or one of the items i listed above.
has anyone got any thoughts.

What do the logs say upon going to standby? (Use aLogcat to watch/save system log).

I had same problem I tried the turning off network always on to off, didn't change anything. the thing that worked for me was turning off my flickr account!? For some reason it kept my calendar awake so keeping system from sleeping, don't ask me why as I can't figure it out, though since doing this I'm now getting up to 2 days of average use from the battery. Also I've done the usual of reducing the different accounts sync timings etc.
Have you typed *#*#4636#*#* into the phone key pad to look at what is happening? This can give valuable info on what's draining the battery.

Jazd71 said:
I had same problem I tried the turning off network always on to off, didn't change anything. the thing that worked for me was turning off my flickr account!? For some reason it kept my calendar awake so keeping system from sleeping, don't ask me why as I can't figure it out, though since doing this I'm now getting up to 2 days of average use from the battery. Also I've done the usual of reducing the different accounts sync timings etc.
Have you typed *#*#4636#*#* into the phone key pad to look at what is happening? This can give valuable info on what's draining the battery.
Click to expand...
Click to collapse
I have the same problem as OP since the latest update. The *#*#4636#*#* code is not helping in this case. The partial wake lock is displayed as Android System - which doesn't tell me anything.
I read something about the Calendar issues but I am unable to stop the calendar in running processes.
How did you solve your problem?

ferus said:
I have the same problem as OP since the latest update. The *#*#4636#*#* code is not helping in this case. The partial wake lock is displayed as Android System - which doesn't tell me anything.
I read something about the Calendar issues but I am unable to stop the calendar in running processes.
How did you solve your problem?
Click to expand...
Click to collapse
Ok i seem to have had some luck since last night though i'm not sure of the exact reason.
i did as th3 said and downloaded system monitor and then killed all background active and inactive tasks and that seems to have solved the problem. I have no idea why that would be the case though and i am watching it carefully to see if it stays fixed.
i dont have a flickr account setup

djet said:
What do the logs say upon going to standby? (Use aLogcat to watch/save system log).
Click to expand...
Click to collapse
Djet, I installed alogcat and have found all references to wakelock, rather than post the entire log
D/PowerManagerService( 77): wakelock: PARTIAL_WAKE_LOCK 'NetworkLocation Check Location' activated (minState=0)
D/PowerManagerService( 77): wakelock: PARTIAL_WAKE_LOCK 'NetworkLocation Check Location' activated (minState=0)
D/PowerManagerService( 77): wakelock: PARTIAL_WAKE_LOCK 'keyguardWakeAndHandOff' activated (minState=0)
D/PowerManagerService( 77): wakelock: FULL_WAKE_LOCK 'keyguard'ACQUIRE_CAUSES_WAKEUP activated (minState=3)
there are also some entries in red like this one
E/vold ( 53): Unable to lookup media '/devices/platform/msm_sdcc.1/mmc_host/mmc0/mmc0:0001'
and a load of errors to do with global search etc but this is all pretty much gobbledegook to me, what am i looking for?
thanks

ok so based on that log i have switched of the use wireless networks to find my location (not gps i hardly ever use that anyway) and now the running % is dropping fast.
i will keep you posted as to whether it keeps coming down or not.
it is going to be an enormous bummer if i cant use wireless location, thats one of a smartphones greatest powers, why would this suddenly start happening now ( started about a week before the ota update) and continues even when i factory reset.

kinkade said:
ok so based on that log i have switched of the use wireless networks to find my location (not gps i hardly ever use that anyway) and now the running % is dropping fast.
i will keep you posted as to whether it keeps coming down or not.
it is going to be an enormous bummer if i cant use wireless location, thats one of a smartphones greatest powers, why would this suddenly start happening now ( started about a week before the ota update) and continues even when i factory reset.
Click to expand...
Click to collapse
I suppose it's not the feature itself guilty but the applications using it. I had the same issue with battery running out because of Location service wake locks. It turned out one of the Locale app plugins was abusing this service. Having it uninstalled battery run became normal.

djet said:
I suppose it's not the feature itself guilty but the applications using it. I had the same issue with battery running out because of Location service wake locks. It turned out one of the Locale app plugins was abusing this service. Having it uninstalled battery run became normal.
Click to expand...
Click to collapse
Yes i know what you mean, how did you go about diagnosing that? also i have done several factory resets and it still happens

Re: Android system - partial wake lock
There are a many app settings that drain battery and the stock setup is nothing I am fond of. Location/locale was one of them for me, calendar, network time and widget/app syncs being the others. A non-stock app causing such problems was NetCounter.
Calendar was fixed by killing it and restarting it. It's a known bug for many.
If many widgets are running sync very often, then you can imagine battery draining fast.
-------------------------------------
- Sent via my HTC Desire -

th3 said:
There are a many app settings that drain battery and the stock setup is nothing I am fond of. Location/locale was one of them for me, calendar, network time and widget/app syncs being the others. A non-stock app causing such problems was NetCounter.
Calendar was fixed by killing it and restarting it. It's a known bug for many.
If many widgets are running sync very often, then you can imagine battery draining fast.
-------------------------------------
- Sent via my HTC Desire -
Click to expand...
Click to collapse
th3 you are legend, it was network time, i switched that off and all is now well in the world. cheers dude

Good find. I had the thing off anyway, but it is good to know.

Event log service battery drain

I currently have a problem that "Google services -> event log service" is draining my battery a lot,
I was asking this in another thread about this problem but got told I should ask here in the specific forum for my phone.
I fully charged it during night and at 2:30am I rebooted the phone and unplugged the charger.
Now in the afternoon at 5pm I checked again (haven't used the phone since then) and battery was at 62 %
Wakelock detector is showing an activity of Google-services/Event log service with 1 hour 43 minutes.
Wlan off, 3G on, GPS off, bluetooth etc off.
I disabled all unessesary syncs including google backup/restore, not helping at all.
I checked developer settings for log recording etc.. but everything is off.
It's the international E975 model btw,

I have the same issue. I think i tweaked it too much lol.
Partial wakelocks in BBS indicates EventLogService has been on for 5h.. -_-
Have you done any tweaks to it? I.e: freeze anything from titanium, greenify, etc

This is a result of frozen apps.

jiexi said:
This is a result of frozen apps.
Click to expand...
Click to collapse
hi there
so if i check what apps are frozen and uninstall them, this will get rid of the problem basically, that simple??

It may just cause more problems. The reason the wakelock is even appearing as event log service is because the app is frozen, but causing wakelocks. But wait, didn't we freeze it?.. how can it still be causing wakelocks? Some other system level app is still capable of waking it, so it may or may not be something important.

jiexi said:
It may just cause more problems. The reason the wakelock is even appearing as event log service is because the app is frozen, but causing wakelocks. But wait, didn't we freeze it?.. how can it still be causing wakelocks? Some other system level app is still capable of waking it, so it may or may not be something important.
Click to expand...
Click to collapse
cheers, actually i have LOTS of wakelock time taken from these 2:
1) Alarm Manager - Android System. this one grows by 5 units every time i unlock the phone and check, NORMAL??
2) Event Log Service - Google Services, this one is a bit more quiet but still growing silently.
Things i have on:
usually sync, but those 2 above grow regardless of sync being on or off, then i have 2 alarms in the calendar, one active and one not and some calendar notifications.
are those responsible? right now my phone is doing around 2% battery use but i notice that it grows very easily, just now i lost 1% in only 25 minutes.
the "awake" graph under battery looks strange.. sometimes it matches screen off (so good), sometimes, it seems to be on, with screen OFF for no reason whatsoever.
any idea?
thanks

Battery optimization

What exactly does that feature do on an individual app? Security apps like cerberus recommend not using it.
Sent from my Nexus 5X using Tapatalk

Hi
km8j said:
What exactly does that feature do on an individual app? Security apps like cerberus recommend not using it.
Sent from my Nexus 5X using Tapatalk
Click to expand...
Click to collapse
During Doze mode (this kicks in when you've not moved or used the phone for a period of time, such as overnight when it's left alone) stops apps from waking the phone or running background tasks, the idea being if the phone isn't being used, it's a waste of power for apps to keep going off on line chattering or receiving notifications and displaying them to the user. Notifications that you might have got immediately, don't ping through until you press the power button the next morning.
I suspect security apps like Cerberus don't want to partake in Doze mode as they want to wake your phone up every few hours regardless and scan it, or be able to download new signatures any time.
Despite setting an app to not be optimised, it still gets stop from waking the phone using alarms during Doze (alarms are something an app can set to say wake the phone up and run the app every 10 minutes or on the hour etc). However the developer of the app can work around this by setting a new type of alarm, for Google this work around is easily detected and it wouldn't surprise me if they start alerting on the Play store about apps that are potential battery drains because they by-pass Doze. Of course some apps have to, for example an alarm clock to wake you in the morning, or something like Tasker that you set to run things at specific times, so it will be up to the developer to explain why and the person downloading to make a decision about it.
Regards
Phil

Hi
PhilipL said:
However the developer of the app can work around this by setting a new type of alarm, for Google this work around is easily detected and it wouldn't surprise me if they start alerting on the Play store about apps that are potential battery drains because they by-pass Doze. Of course some apps have to, for example an alarm clock to wake you in the morning, or something like Tasker that you set to run things at specific times, so it will be up to the developer to explain why and the person downloading to make a decision about it.
Click to expand...
Click to collapse
That was my post in October, this happened to Tasker: http://www.androidpolice.com/2015/1...y-reasons-this-time-its-the-notorious-tasker/
It seems Google has perhaps pulled the plug on Tasker a bit too quickly due to a BETA version, but I think overall this approach is good for Android if it gets rid of battery draining apps, which usually are up to no good downloading ads or sending back data for marketing reasons. Obviously some apps are the exception to this like Tasker, which will need this exception to continue working correctly, as otherwise it will be restricted to one wake-up every 15 minutes only when the phone goes into doze mode.
Regards
Phil

PhilipL said:
Hi
That was my post in October, this happened to Tasker: http://www.androidpolice.com/2015/1...y-reasons-this-time-its-the-notorious-tasker/
It seems Google has perhaps pulled the plug on Tasker a bit too quickly due to a BETA version, but I think overall this approach is good for Android if it gets rid of battery draining apps, which usually are up to no good downloading ads or sending back data for marketing reasons. Obviously some apps are the exception to this like Tasker, which will need this exception to continue working correctly, as otherwise it will be restricted to one wake-up every 15 minutes only when the phone goes into doze mode.
Regards
Phil
Click to expand...
Click to collapse
Interesting reading. The question is why they even allow apps to use permission for ignoring doze, whe it most liley means ban in Play Store. Should be available to system apps only.
Note: Google Play policies prohibit apps from requesting
direct exemption from Power Management features in Android 6.0+ (Doze and App
Standby) unless the core function of the app is adversely affected.
Click to expand...
Click to collapse
Now the question is what authority can JUDGE whether certain app needs it or not.

The dreaded Samsung "Android System" Battery Drain

Hi all,
I seem to get this issue with pretty much every single Android Device I've owned in the last 8 years, particularly Samsung ones, and that's the good old "Android System" battery drain.
I have tried everything over the years, except rooting the device, but nothing has ever worked as a permanent fix.
I have tried:
- resetting device
- clearing cache
- restarting phone
- Shutting down background tasks
- Low battery usage location settings
- Deleting apps
- a million other things
But one way or another, Android System will eventually make its way back to the top of my battery usage stats.
I've come to the conclusion that it's the OS itself that's badly coded which causes this.
Has anyone, anyone, ever figured out a way to get on top of Android System battery drain?

lbreak said:
Hi all,
I seem to get this issue with pretty much every single Android Device I've owned in the last 8 years, particularly Samsung ones, and that's the good old "Android System" battery drain.
I have tried everything over the years, except rooting the device, but nothing has ever worked as a permanent fix.
I have tried:
- resetting device
- clearing cache
- restarting phone
- Shutting down background tasks
- Low battery usage location settings
- Deleting apps
- a million other things
But one way or another, Android System will eventually make its way back to the top of my battery usage stats.
I've come to the conclusion that it's the OS itself that's badly coded which causes this.
Has anyone, anyone, ever figured out a way to get on top of Android System battery drain?
Click to expand...
Click to collapse
I'm not sure this effects that, but while setting up phone from a factory reset etc, do you Uncheck the fields that pop up such as analytics, wifi scanning (even while off) and all the other ones ?
I uncheck all the crap i can. It's possible if you leave those checked that could be the culprit a bunch of services running in bckgrd....
Just a guess....but if you say this has happened on all your androids....maybe this is why.
Sent from my [device_name] using XDA-Developers Legacy app

louforgiveno said:
I'm not sure this effects that, but while setting up phone from a factory reset etc, do you Uncheck the fields that pop up such as analytics, wifi scanning (even while off) and all the other ones ?
I uncheck all the crap i can. It's possible if you leave those checked that could be the culprit a bunch of services running in bckgrd....
Just a guess....but if you say this has happened on all your androids....maybe this is why.
Sent from my [device_name] using XDA-Developers Legacy app
Click to expand...
Click to collapse
Yep I un-ckeck all of those fields. Makes zero difference overall (I have tried both ways).

lbreak said:
Yep I un-ckeck all of those fields. Makes zero difference overall (I have tried both ways).
Click to expand...
Click to collapse
That sucks, could it be due to social media apps syncing constantly? Sorry I'm out of ideas....
Sent from my [device_name] using XDA-Developers Legacy app

Ibreak, maybe the problem is caused by apps sending reports and analytics via google services, samsung related stuff always sends analytics, even if you do not facebook, the damned thing is always lurking and consuming resources, google app and chrome also are resources-hoarders, I use ccswe to disable all useless firebase, crash, analytics, ad listeners, campaign trackers, components and some boot listeners within many apps

lbreak said:
Hi all,
I seem to get this issue with pretty much every single Android Device I've owned in the last 8 years, particularly Samsung ones, and that's the good old "Android System" battery drain.
I have tried everything over the years, except rooting the device, but nothing has ever worked as a permanent fix.
I have tried:
- resetting device
- clearing cache
- restarting phone
- Shutting down background tasks
- Low battery usage location settings
- Deleting apps
- a million other things
But one way or another, Android System will eventually make its way back to the top of my battery usage stats.
I've come to the conclusion that it's the OS itself that's badly coded which causes this.
Has anyone, anyone, ever figured out a way to get on top of Android System battery drain?
Click to expand...
Click to collapse
Enable Developer option
then go Settings» Developer options» running services
Here you should see a bunch of services running. A number of them should fall under Android System, close all related to Android System (it is ok to do so)
Then under Google Play services close all (well two of those services are persistent so they will auto start back in a couple seconds, lockscreeen service and Google location service), nothing you can do about this other than to disable Google play services which would then cause a lot of apps to cry like pandora, samsung internet browser, play store, YouTube etc.
Then go settings» apps» 3 dots at upper-right hand corner» show system apps» android system» battery» disable background activity
On each restart Android system background activity will be automatically enabled so just disable it on each restart.
The thing is it could be a number of apps or services that is causing the issue through Android system but a good indicator of which app might be causing your issue is to check Android system memory which is right below background activity, there it should show which app is accessing the memory through it the most. Disable that app or clean its cache/data.

lennie said:
The thing is it could be a number of apps or services that is causing the issue through Android system but a good indicator of which app might be causing your issue is to check Android system memory which is right below background activity, a.
Click to expand...
Click to collapse
Thanks lennie,
How do I check this?

lbreak said:
Thanks lennie,
How do I check this?
Click to expand...
Click to collapse
It's in the same place you'd find background activity, but instead of going to battery, go to memory.
settings» apps» 3 dots at upper-right hand corner» show system apps» android system» memory
At the top above average memory usage you should see the app.
I would recommend using a package disabler (ccswe from the play store or package disabler pro from their website)
You can disable a lot of things but DO NOT disable
boot agent (could lock your phone in bootloop)
Android system (could hand your phone on boot up)
One UI (unless you have a different launcher installed and enabled)
IMS is important too
There's one more I can't remember right now, but you get the idea.
If you're not too sure if something can get disabled with no harsh side effects then just post the question
settings» apps» 3 dots at upper-right hand corner» show system apps» android system» mobile data
Shows a list of all the apps that have access to the network through Android system, disable the the ones you're sure you're not using or will use. That should shorten the list of potential battery drainer.

Thanks again.
It just shows an app called "face" under Android System memory. I assume that's for face unlock.

Be careful with disabling OneUI, because it will also disable the task manager and you'll got a really ugly one instead.

lbreak said:
Thanks again.
It just shows an app called "face" under Android System memory. I assume that's for face unlock.
Click to expand...
Click to collapse
Yeah that's for face unlock. I used to use it but since the fingerprint scanner update it has been working really well with my screen protector so I don't really need it anymore so I have it disabled.
If you don't use face.
How i use my phone to maximize my battery is simple. Things I don't use or need I keep them disabled, some I simply disable until I need them like the play store or galaxy store etc. Every other day or so I would check those apps to see if there is an update I might want to install.

lennie said:
Yeah that's for face unlock. I used to use it but since the fingerprint scanner update it has been working really well with my screen protector so I don't really need it anymore so I have it disabled.
If you don't use face.
How i use my phone to maximize my battery is simple. Things I don't use or need I keep them disabled, some I simply disable until I need them like the play store or galaxy store etc. Every other day or so I would check those apps to see if there is an update I might want to install.
Click to expand...
Click to collapse
I only use the fingerprint sensor, but it's still shows (only) Face there. Any idea?

There's really no fix to Android System drain, it's especially worse when you're on mobile data.

Question Device restarting after a while of using GPS tracking software

Hello all,
I'm using the latest C.47 version of Oxygen OS 12 on my EU OnePlus 9 Pro, and when using GPS tracking software, after a while it always causes the device to reboot in some way. This means that when I bring the device back from standby that the device gives the message that after a reboot the PIN needs to be entered. However, it only asks for the device PIN and not the SIM pin. So it cannot be a complete reboot. Of course, the tracking software was also terminated.
The problem occurs with the following apps:
- Ski Tracks https://play.google.com/store/apps/details?id=com.corecoders.skitracks
- Adidas Running https://play.google.com/store/apps/details?id=com.runtastic.android
- GPS Logger https://play.google.com/store/apps/details?id=eu.basicairdata.graziano.gpslogger
I assume that (almost) all GPS trackers are affected, but I only tested the three above. Under C.44 I did not have this problem yet.
Battery optimization was of course turned off for the apps. Additionally, the apps were locked and background tasks were allowed. But after all, it is the whole device that crashes and not just the app that quits in the background.
Does anyone know the problem?
Best Regards,
Stefan

FredericDelany said:
Hello all,
I'm using the latest C.47 version of Oxygen OS 12 on my EU OnePlus 9 Pro, and when using GPS tracking software, after a while it always causes the device to reboot in some way. This means that when I bring the device back from standby that the device gives the message that after a reboot the PIN needs to be entered. However, it only asks for the device PIN and not the SIM pin. So it cannot be a complete reboot. Of course, the tracking software was also terminated.
The problem occurs with the following apps:
- Ski Tracks https://play.google.com/store/apps/details?id=com.corecoders.skitracks
- Adidas Running https://play.google.com/store/apps/details?id=com.runtastic.android
- GPS Logger https://play.google.com/store/apps/details?id=eu.basicairdata.graziano.gpslogger
I assume that (almost) all GPS trackers are affected, but I only tested the three above. Under C.44 I did not have this problem yet.
Battery optimization was of course turned off for the apps. Additionally, the apps were locked and background tasks were allowed. But after all, it is the whole device that crashes and not just the app that quits in the background.
Does anyone know the problem?
Best Regards,
Stefan
Click to expand...
Click to collapse
I had a similar behaviour with Waze on crDroid 8.2, after it happened a few times, I quickly noticed the phone was unusually hot. Have you noticed any high temperature when it happened to you?

No, it does not get hot und does not consume much battery :-/