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Hey all
I am loving ICS on my Xoom. However, I have noticed that "Android OS" is taking up tons of battery, with high awake times. I have had it unplugged for about 3 days, and the screen has only been on for like 2 hours. However, "Android OS" is the highest battery eater on the list and has kept the device awake for over 10 hours. Anyone else seeing this? I am having the same problem on my Galaxy Nexus. Thanks for any input.
Have you tried CPU Spy? Mine shows deep sleep when the screen is off. Also screen is the biggest battery user, by far.
Yeah. I used it and it said that it spent 2 hours at 1000mhz (amount of time the screen was on) and 12 hours at 216mhz and 76 hours in deep sleep. That 12 hours is taken by Android OS, and I don't know why. It is killing my battery. Does anyone know why Android OS is staying awake so much?
It is probably apps that are trying to sync. See what you have that might be trying to update/sync.
You also may want to try uninstalling some older applications. I think I read somewhere that some older non-ICS optimized apps can prevent the OS from sleeping.
HuckFinn said:
You also may want to try uninstalling some older applications. I think I read somewhere that some older non-ICS optimized apps can prevent the OS from sleeping.
Click to expand...
Click to collapse
Do you know of any that are especially problematic?
I have 120 apps. Isolating the problem is going to prove to be difficult. Any ideas which ones? This has been happening with my Nexus for 3 weeks now, nobody else is seeing Android OS taking up a lot of awake time?
tysdroid17 said:
Hey all
I am loving ICS on my Xoom. However, I have noticed that "Android OS" is taking up tons of battery, with high awake times. I have had it unplugged for about 3 days, and the screen has only been on for like 2 hours. However, "Android OS" is the highest battery eater on the list and has kept the device awake for over 10 hours. Anyone else seeing this? I am having the same problem on my Galaxy Nexus. Thanks for any input.
Click to expand...
Click to collapse
Just wipe your system clean and reinstall your apps. That will fix all your ICS upgrade issues.
Are you syncing email via activesync? If so, turn it off for a while and check if it makes a difference. This is what makes android os go through the roof for me on the tablet and the phone!
Sent from my GT-I9100 using Tapatalk
tysdroid17 said:
I have 120 apps. Isolating the problem is going to prove to be difficult. Any ideas which ones? This has been happening with my Nexus for 3 weeks now, nobody else is seeing Android OS taking up a lot of awake time?
Click to expand...
Click to collapse
Is that 120 downloaded apps or 120 altogether (including system apps)? Either way, disabling auto-sync and background data before putting your Xoom down could/should help curb the excess battery drain. The only issue with that is certain apps, like Market, won't function without background data enabled but that shouldn't be an issue if you won't be using your Xoom for a while. You could search the forums or Google on how to create scripts to disable/enable background data and auto-sync for you when you put the device to sleep and wake it back up, respectively. Or just search the Market for an app that does that for you.
Do you leave your wireless radios on (wifi, bluetooth, etc.) while not using your Xoom? Setting wifi to disconnect while sleep may also help.
Thank you all for your input, however I think many people do not understand what I am saying...
I understand how to reduce battery drain IN GENERAL, what I am asking is, are people seeing battery drain faster overall on ICS compared to HC? I am, and I think that Android OS is the culprit. Is anyone else experiencing this?
Thanks!
You know, I had the same exact problem when I installed the first fully functional EOS ICS rom for my Verizon Xoom. The Android OS kept draining the hell out of my battery. I went from having about 5 days of battery life to 1 or two tops.
I decided to try a different rom. Since I don't have Mobile Internet, I decided to experiment and installed the Wingray Version of the CM9 ICS Leak(Kang) and I haven't had this issue since.
So I'm not sure what fixed it, was it because I tried a different type of rom, or was it because I downloaded the Wingray version? Not sure, but either way the problem stopped.
Perhaps try a different rom if you're rooted?
I am experience this issue on my Nexus. Try using easy batter saver. It extends my battery life very well.
https://market.android.com/details?...GwsMSwxLDEsImNvbS5lYXN5LmJhdHRlcnkuc2F2ZXIiXQ..
I'm seeing some of the same issues on EoS nightly 49. I'm down to 88 percent with barely any use. 14 hours of up time. Android OS at 3hrs and 27 mins up time.
tysdroid17 said:
I understand how to reduce battery drain IN GENERAL, what I am asking is, are people seeing battery drain faster overall on ICS compared to HC? I am, and I think that Android OS is the culprit. Is anyone else experiencing this?
Click to expand...
Click to collapse
I'm not, if anything ICS is giving me better battery life than HC. Even considering I'm now overclocked and using my Xoom a lot more.
I think a lot of people misinterpret the battery % used though. Just because something is using a higher percent of battery does not mean its sucking your battery down, there will always be something at top of that % list, it doesn't mean there's a problem. It's a relative list. It's entirely possible (and reasonable IMO) to have Android OS at the top of your list if you've used your device for only 2 hours over 3 days! You barely used it, what would you expect to be at the top?
that's a known problem,
Android OS is also taking up a lot in the stats for e.g. the Galaxy S on its ICS port
a related question though:
I'm mainly using my Xoom for ebook reading (PDFs via ezPDF and/or repligo reader) - which ROM in your opinion offers the better battery runtime
Team Eos ICS ROM
or
the Team Tiamat Moray ROM
?
Many thanks in advance !
Android OS battery bug 4.0.3
If your android device has been off for a considerable amount of time, Android os should not be at the top of battery usage list; phone idle would be in that spot under normal situation. However, there is a battery bug in 4.0.3. After installing 4.0.4 on my Gnex it fixed the problem (from my understanding 4.0.4 was only for the Gnex as its a newer device and the Xoom wifi is slowly becoming obsolete). I'm guessing this will be fixed in 4.0.5 that will be released sooner or later... my guess is later with aging devices.
My Wifi only Xoom with Team EOS is getting 4+ days of battery life and my screen is whats taking most of the battery. I am using the latest nightly as well as the latest GAPPs. There is something running on your Tablet that is casing the problem you are having. I am having no probles with ICS at all and having great battery life. Have you tryed using maybe setcpu to setup a screen off profle. I would maybe think about doing a full wipe and starting over with the latest of everything.
My android OS was at the top of my battery usage (74%) even when in sleep mode. I used to get 5-6 days, now I get only 2 at best.
I disabled wireless and the drain goes away, android os goes back down to 2-3%.
Any ideas?
ICS 4.04 Xoom WiFi only.
Thanks
Bruce
tysdroid17 said:
Thank you all for your input, however I think many people do not understand what I am saying...
I understand how to reduce battery drain IN GENERAL, what I am asking is, are people seeing battery drain faster overall on ICS compared to HC? I am, and I think that Android OS is the culprit. Is anyone else experiencing this?
Thanks!
Click to expand...
Click to collapse
mine is draining somewhat fast when i use wireless, but as soon as thats disabled im good to go
Hi everybody,
I bought a 3G MZ601 zoom about 6 months ago and everything was fine with it. After a few months, i put Eos stingray and wingray on it to try ICS. They worked fine except for the battery life which drained at about 3% an hour even with everything (wifi etc) turned off.
When Eos everest came out, I put that rom on it and have since been updating it with the nightly updates, but the battery problem still exists.
I returned the xoom back to stock a few days ago, but the drain is still here, even with everything (wifi etc) turned off.
Has anyone had the same issues as me, or does anyone know how I stuffed up the battery life on my xoom?
thanks for your consideration
Experiencing similar issue here on MZ601 ics 4.0.3 battery drains realy quick!
What i noticed was that on android 3.2 system was taking about 6 % of battery now on ics it takes 22% its a lot...
so no one has any ideas?
could it be that its just a dodgy battery?
hi,
i don't think it's a dodgy battery as I'm experiencing the same issue on my currently rooted MZ601 - on EOS nightly 58 at the moment...
cheers.
I've been running TeamEOS on my Xoom for quite some time, and it's been great. However, recently the device's battery life has become incredibly poor. For example, today my Xoom has been unplugged for 8 hours 47 minutes, without being used at all, and the battery is at 61%.
Previously, the Battery usage settings view was showing the Wi-Fi in use all day, but today I turned Wi-Fi off and it is still the same. The 'GPS on' line shows one small section of blue (about 10 minutes) and the 'Awake' line shows a few times it has been awake, maybe half an hour in total.
I installed BetterBatteryStats and the longest Kernel Wakelock is PowerManagerService, for 2m 2s, the longest Partial Wakelock is ConnectivityService at 57s.
Under 'Other' it shows that the device was in Deep Sleep for 8h 39m.
Another odd thing is that when I first unplug the device, I get a kernel wakelock on cpcap_otg. If I don't do anything the battery drains even faster than it did today (it never goes into Deep Sleep), but if I plug in my USB card reader (without a card), and then unplug it again, that wakelock doesn't happen again, extending the battery life slightly.
I have a Wingray Xoom (MZ604), and I currently have TeamEOS nightly 114 installed. I have tried various nightlies, back as far as 90, and have also done a factory reset, to no avail. I haven't yet tried going back to Honeycomb, although maybe I should just to check, as it certainly used to work fine under TeamEOS 1.0.
Does anyone know anything else I can try to do to fix this?
James
jamesots said:
I've been running TeamEOS on my Xoom for quite some time, and it's been great. However, recently the device's battery life has become incredibly poor. For example, today my Xoom has been unplugged for 8 hours 47 minutes, without being used at all, and the battery is at 61%.
Previously, the Battery usage settings view was showing the Wi-Fi in use all day, but today I turned Wi-Fi off and it is still the same. The 'GPS on' line shows one small section of blue (about 10 minutes) and the 'Awake' line shows a few times it has been awake, maybe half an hour in total.
I installed BetterBatteryStats and the longest Kernel Wakelock is PowerManagerService, for 2m 2s, the longest Partial Wakelock is ConnectivityService at 57s.
Under 'Other' it shows that the device was in Deep Sleep for 8h 39m.
Another odd thing is that when I first unplug the device, I get a kernel wakelock on cpcap_otg. If I don't do anything the battery drains even faster than it did today (it never goes into Deep Sleep), but if I plug in my USB card reader (without a card), and then unplug it again, that wakelock doesn't happen again, extending the battery life slightly.
I have a Wingray Xoom (MZ604), and I currently have TeamEOS nightly 114 installed. I have tried various nightlies, back as far as 90, and have also done a factory reset, to no avail. I haven't yet tried going back to Honeycomb, although maybe I should just to check, as it certainly used to work fine under TeamEOS 1.0.
Does anyone know anything else I can try to do to fix this?
James
Click to expand...
Click to collapse
Battery life seems to be so device specific that it's really difficult to diagnose, tho you seem to be looking in the right places. I'm on 114 as well and my battery life is fine...normal for my device, depending on use. It is said that you need to let a new rom install settle a bit, and I've been told to flash a new rom with a full charge...other than that, I don't know.
It could be some app you recently installed that wakes up your device wifi and consume battery. To diagnose more, get betterbatterystat app.
Sent from my MZ601 using Tapatalk 2
wesamothman said:
It could be some app you recently installed that wakes up your device wifi and consume battery. To diagnose more, get betterbatterystat app.
Sent from my MZ601 using Tapatalk 2
Click to expand...
Click to collapse
He said that is the app he is using. I'm sure, as you said, it is an app causing either wakelock or something syncing in background.
Are you syncing Facebook? I uninstalled the app a long time ago and battery life went up.
Tried wipe battery data in recovery? That may fix your battery issues.
kinda old thread, but if you are still facing battery problems, try this.
go to settings/wifi/advanced and choose never for "keep wifi on during sleep"
I had the exact same problem and it turned out that the device gets a wakeup call from the wifi router every now and then, which keeps it from entering deep sleep mode, resulting in horrible battery stats, running dry after about 1,5 days of just laying around.
Since I did the setting change, my xoom lasts for almost 1,5 weeks at light to medium use (mainly browsing and email) now
Bux1982 said:
kinda old thread, but if you are still facing battery problems, try this.
go to settings/wifi/advanced and choose never for "keep wifi on during sleep"
I had the exact same problem and it turned out that the device gets a wakeup call from the wifi router every now and then, which keeps it from entering deep sleep mode, resulting in horrible battery stats, running dry after about 1,5 days of just laying around.
Since I did the setting change, my xoom lasts for almost 1,5 weeks at light to medium use (mainly browsing and email) now
Click to expand...
Click to collapse
true, but don't forget that will also kill your apps from keeping their state up to date. email push won't work anymore. it's a matter of what you want, i personally rely on the phone for incoming mail and use the xoom for reading with disabled wifi during standby. it's the best of both worlds, instang notification and long battery.
oh, of course you´re right.
I didn´t thought that this could be an issue for other people.
Like you, I get my mails on phone and work on them on tablet.
Like you said,best of both worlds and feels so natural
But I still say, if you can sacrifice the "always-up-to-date" satus on your tab, just do it cause the battery uptime afterwards will be totaly awesome.
hello ppl,
I have this issue with my battery:
This afternoon my battery indicated 82%. the phone shut down and after a reboot it indicated around 27% battery left.
Later in the afternoon, after a reboot, I charged it for like 2 mins. it indicated 12%
I unplugged it and rebooted into recovery (4EXT) and it indicated 60% battery lvl.
I rebooted the ROM again and this indicated 34%
this event (reading 3 different battery lvls) took place in 1 minute, and the phone was not charger connected. It went from 12, to 60 and to 34%.
This really looks like a battery stats issue but what I can't help to wonder about is the following; do recovery and the ROM use different battery stats? this particular story sure gives that impression.
I plan to wipe battery stats after a full USB charge. U guys got any pointers I could consider? I have a stock batter for about 2 years now.
ROM: CM10.1 by Albinoman
Kernel: 3.0.67 ChronicBruce Linaro
Governor: ondemand
clockspeed: MIN 384 MAX 1728
I/O schedular: SIO
note: I did not experience any battery issue with this setup for at least 4 months prior to this problem, while using this setup.
attached a SS of the battery levels after reboot and shutdowns.
Seems like you're experiencing the same issues. The battery percentage was also way higher in recovery mode than Android showed me. Never noticed that before, so I'm not sure if that's normal, or both our phones / batteries are malfunctioning.
Wiping battery stats does nothing. 2 years is quite long for a battery, get an Anker?
onemanshow85 said:
hello ppl,
ROM: CM10.1 by Albinoman
Kernel: 3.0.67 ChronicBruce Linaro
Governor: ondemand
clockspeed: MIN 384 MAX 1728
I/O schedular: SIO
note: I did not experience any battery issue with this setup for at least 4 months prior to this problem, while using this setup.
attached a SS of the battery levels after reboot and shutdowns.
Click to expand...
Click to collapse
Before buying a new battery, did you attempt to flash a new ROM? becuase you seem to run a (very) old version of CM10.1 (I believe since March?), and although it's weird this popped up after four months, it is possible to be a problem in the ROM, especially with all the bugs fixed along the way. I believe updating the ROM should be the thing to do, before trying to change hardware parts (even battery), and if it won't work, you can always buy a battery (don't ofrget to back up your current ROM first).
astar26 said:
Before buying a new battery, did you attempt to flash a new ROM? becuase you seem to run a (very) old version of CM10.1 (I believe since March?), and although it's weird this popped up after four months, it is possible to be a problem in the ROM, especially with all the bugs fixed along the way. I believe updating the ROM should be the thing to do, before trying to change hardware parts (even battery), and if it won't work, you can always buy a battery (don't ofrget to back up your current ROM first).
Click to expand...
Click to collapse
I'm a mediocre XDA visitor and phone tweaker, so I didn't realize ROM's would get obsolete that quick (in my opinion). I will try to flash a updated CM, see if that works.
ok I updated my ROM. But there's no change in my batterie's behavior: shutdowns at high battery lvls and drops from enar full to near empty after the reboot.
I'm plannign to buy an Anker. but if anyone has some pointers that would be mint.
I already did the paper between battery trick.
Another update, today i noticed that the battery is a little bit swollen. The battery casing doesn't close properly anymore. When looking closely i notice the battery being slightly thicker. I don't trust it and don't use it anymore untill i got the anker
I just rooted and installed a custom ROM on my Evita One X earlier in the week. I had used wizzrah's excellent EZToolkit to get S-off, install a custom recovery and then a custom ROM. I had originally had a CM11 nightly installed, where I noticed high battery drain when having mobile data enabled. I went back to a CM10.2 stable build and have experienced the same. It's a really fast drain while mobile data is enabled, maybe a percent every few minutes. I have an AT&T LTE SIM installed and am in an HSPA+ area with LTE nearby. I keep noticing that the status bar icon keeps cycling between H, H+, and 3G. I had noticed the same with CM11 nightlies, but it's also happening on CM10.2. Is this normal? Do I need to flash a new radio? Something seems a bit unusual.
Baseband: 0.24p.32.09.06_10.130.32.34L
Recovery: TWRP 2.6.3.0
ROM: CM 10.2.0-evita
Kernel: 3.4.11-g69442cc
Build number: cm_evita-userdebug 4.3.1 JLS361
Thanks.
If you've just flashed the ROM, have you done an initial charge cycle? This means flashing the ROM, letting the phone discharge to ~10%, charging it fully, allowing it to discharge to ~10% again, and charging it fully. After doing this you should also let the ROM "settle in" for a few days, the battery life should improve. Once you've done that and you feel that the battery life still isn't good enough come back here with some battery statistics and we can try to analyse what's going on.
Sent from my Evita
Let the battery fully drain last night and then gave the phone a full charge overnight. The phone is at 57% right now after being unplugged for 17 hours. I used very little mobile data (maybe for a few minutes); I was connected to WiFi most of the evening. I'll let it drain overnight and see what it's at in the morning. The weekends aren't a very good use-case for me because I'm not at work and am around WiFi most of the time. I'll see how it goes on Monday when I'm at work and using mobile data a decent part of the day.
If you're at 57% after 17 hours off charge, I'd say that's pretty normal drain. What kind of screen on time?
Sent from my Evita
Screen on is at 32%.
I meant the actual time the screen has been on for. If you go into Settings/Battery and then click Screen it'll show you.
Sent from my Evita
Ah, okay. Time on is 1 hour 6 minutes. I have the screen set to auto-brightness and timeout is 30 seconds.
I think that's about on par, it could be a little better but it's within the realm of being normal. Auto-brightness is a bit of a battery killer, it tends to make the screen brighter than it needs to be.
Sent from my Evita
Just an update after about a week. I've tried a few different radio images ([ATT 1.85 /1.82 (0.17.32.09.12_10.86.32.08L)]; [ATT 2.20 (0.19as.32.09.11_2_10.105.32.25)]; [HTC ATT 3.18 (0.24p.32.09.06_10.130.32.34)]) and the battery results seems to be about the same regardless of what radio I have installed on CM 10.2 and CM 11 builds. The battery life drops about 1% an hour until I'm connected to mobile data and it drops a significant amount more after that, probably about a percent every few minutes. I will try some other ROMs and give my report here.