Is there any solution to the battery drain on ics - Eee Pad Transformer Q&A, Help & Troubleshooting

i lose around 40 precent overnight everyday
its really frustrating knowing that i have to work with it full day afterwards
so is there any fix for this?

No idea what youre talking about. Mine only drains 20% with wifi and wifi apps running overnight.
Maybe you should look over what you got running, and if you got a custom kernel, reduce the lowest frequency of the cpu. Im running mine at 450Mhz or something.
Ooooor maybe 'overnight' for you is like 26h ?

You could also............
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suspense!
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Leave it on the charger over nite! I know. Shocking.

Download "BetterBatteryStats" from here and check which app is causing it. If you need assistance, just head over to BBS thread. Remember to attach your log file so it's easier for them to help you.

Hearmeman said:
i lose around 40 precent overnight everyday
its really frustrating knowing that i have to work with it full day afterwards
so is there any fix for this?
Click to expand...
Click to collapse
First thing, you should get CPU Spy from the market. This will tell you if your TF is going into deep sleep or not.
If you were experiencing the same issue under HC then ICS most likely wouldn't fix the issue anyhow.
Prior to ICS I was loosing about 25% over night which just shouldn't happen. I was rooted but stock otherwise. I unrooted my TF & completely wiped before flashing ICS. One cool thing about ICS is there is an intergrated task manager widget. You can see what programs are running at any current time. There were three programs that were constantly running that I disabled. Those were PixWE, Netflicks, & My Uploads. Netflicks kept wanting me to update but I don't use it so why update it? I simply disabled it and there are a whole host of other programs that can be disabled too.
With all this being said I am only loosing 3-4 percent over night running ICS completely stock.

Try airplane mode
There's an app in the market that simulates airplane mode, but allows wifi still. After I installed it I stopped losing battery overnight. It's basically a wake-lock issue.

2easilyamused said:
There's an app in the market that simulates airplane mode, but allows wifi still. After I installed it I stopped losing battery overnight. It's basically a wake-lock issue.
Click to expand...
Click to collapse
+1 This worked for me too but for a different reason. My TF tends to leave wifi switched on, even when told to turn off when the screen does. It could also be a rogue app as described above. Once you sort it out, overnight drain should only be a few percent at the most.

2easilyamused said:
There's an app in the market that simulates airplane mode, but allows wifi still. After I installed it I stopped losing battery overnight. It's basically a wake-lock issue.
Click to expand...
Click to collapse
Could please tell me the name?

How to diagnose here
I lose ~20% overnight in flight mode.
If I go Settings > Battery I see it's a lot of Android OS. But widgets must be included in that. So then I go settings > apps > running and see a few apps running, but I can't tell which of these is killing the battery and I don't know which app would tell me ((can I run top on the the commandline?)). I will experiment more and report back. I suggest you do that same.
This should go in the first post of this thread:
To diagnose this charge before sleep, put into flight mode overnight and look in the morning to see if the Android OS has been the culprit.
Perhaps you don't need any 3rd party apps for diagnose but if you need to be available for early morning calls use a profile scheduler.

Get a new Kernel
The main problem is the kernel in ICS, a way to fix this is changing your kernel, I do recomend the Test kernel from Guevor, install from version 11 to up, test it and keep the one you like. My tf is lasting fully with keyboard, around 30hrs.

I use test 13
but on .17 and not .23

I'm on ICS 4.0.3 with 3.0.8-NEO though
werewolferx said:
The main problem is the kernel in ICS, a way to fix this is changing your kernel, I do recomend the Test kernel from Guevor, install from version 11 to up, test it and keep the one you like. My tf is lasting fully with keyboard, around 30hrs.
Click to expand...
Click to collapse
My Nook got stolen and I'm waiting for a DroidPro to arrive so this would be on my main phone. When I've tried to flash just the kernel on it's own I've had problems before. This time I'll give it a go but am I missing something in terms of flashing a new kernel on?
I'm on ICS 4.0.3 with 3.0.8-NEO-3.0-TeamICSSGS-257174-g197c9a1-dirty (build *07)
Other than the possible battery problem it's been good. I just want to check to see if yo uhave anything more concrete to backup your decision... that a different kernel really might make any difference because that Test kernel from Guevor is very much in flux... I'd no idea which one to choose.Up to test15 now.
(thread for reference here: http://forum.xda-developers.com/showthread.php?t=1565519 )
For convienience it would be nice to backup the current kernel first as other than battery it's working well...
update, edit instead of bump:
ok, I lost 1% an hour last night in flight mode (6% over 5 hours) with all background apps and services killed. Does that seem about right? The interesting thing was that not all processes/services/backgrounded showed the same on different task killers...
I bet there's lots of people updating kernels when actually it's an app, or the left over effects of an app or something like that.

Hearmeman said:
Could please tell me the name?
Click to expand...
Click to collapse
Use Auto Airplane Mode by DON this fixed my problem with battery drain from the wifi staying on.After 4 days of use I still hade 35% battery left!

Related

[HELP] Battery drain too fast

i use SimplyII and Darkcore 2.2 on my cappy. But it drain from 100% to 60% in about 6h when i sleep i use darkcore2.2 and talon too, switch to Continuum but i still have the same issue.
In menu Battery use i see that android OS is 82%. please help.
Sr about my english
Did you disable the 100mz state? Do you have any apps/widgets running that would prevent the phone from sleeping?
no i don't disable it i have only a beautiful widget running
Download CPU spy from the market. That will help you see which state your phone is staying in the longest. You'll be able to see if it is going to sleep or not.
I would also download an app to monitor your running applications(watchdog is one).
It sounds like you have an app running ramopant, not allowing your phone to sleep. For me, Maps and Keep The Lights On were never allowing the system to sleep.
You can also go to Settings/About Phone/ Battery Usage. It should show you your top programs consuming the battery. Good Luck.
If i use phone only for messenging, calling nothing happen!!
But if I play a game which data >10MB, system will run at 1000MHz and continue to run though i completely close it If I reset phone, the problem will be solved. I have reinstall the ROM, switch to Continuum 5.4.1, dark core, talon... but i can't fix it.
Someone can help me how to install a Gingerbread
Thanks much much much for helping me and sr about my bad english
i guess its a gingerbread issue...even i suffer from such a problem...any solutions?
neo_31591 said:
i guess its a gingerbread issue...even i suffer from such a problem...any solutions?
Click to expand...
Click to collapse
Don't go to Gingerbread yet. It is known to have many issues.
Red_81 said:
Don't go to Gingerbread yet. It is known to have many issues.
Click to expand...
Click to collapse
but the crt animation is just too good!!
tquang620 said:
i use SimplyII and Darkcore 2.2 on my cappy. But it drain from 100% to 60% in about 6h when i sleep i use darkcore2.2 and talon too, switch to Continuum but i still have the same issue.
In menu Battery use i see that android OS is 82%. please help.
Sr about my english
Click to expand...
Click to collapse
Freeze Google Maps with Titanium Backup.
I have installed Continuum 5.5 + darkcore 2.4 (stock 2.1 with boot i9000 => master clear => up), remove Googlemap but it's still draining my battery. Sometime the Android OS goes above 30%, cappy warm => hot => I must reset huhuhuhu

[Q] Battery Drain - 98% Wifi

The last few days my TF101 keeps draining over night, when I look at my battery stats it says 98% is Wifi. I'm not sure what is happening, should I think it is the Dock battery drain problem, or do you think I have a bad app that is keeping wifi going ? If so, how can I find it? I am on a custom rom Revolution 2.3.0 and was wondering if I may be better off trying to go back to the stock WW rom but with root? in preparation for ICS?
Also could this be sleep problem maybe?
Thanks all
Try auto airplane mode. Worked for me.
That is mostly a bad app. Try to get a task manager software to see what's on and kill it. It is most certainly a programe that connects to the Internet most of the time like torrent based software that is always uploading...
I had this problem once or twice when flashing new ROMs.
Just try to reflash the ROM of your choice and wipe cache also.
Let me know if this helped!
What apps are you running?
Check your apps. To test this, just before you put the TF to sleep. go into wifi settings and set wifi to go off when screen does. put it to sleep. I found this works, but something is resetting wifi off to never once you wake it up. Permissions on most apps are way more than needed.
Just noticed it is set up in device settings to never disconnect from wifi. What should the default setting be for the device? I have set back to disconnect on screen going off. What do you guys have set for yours?
I have a B50 dock and a B60 Transformer. My Transformer began draining no matter which options I set with wifi and screen etc., previously I had a very low battery drain. I started looking around and discovered some apps that I had installed had automatically initiated auto synch settings. I disabled all auto Synch options and now it is going into deep sleep and battery drain has stopped.
asus transformer 101g - all widgets and programm show me 8-9-7 Mv and do not show normal voltage ? WTF ?
wilx said:
Just noticed it is set up in device settings to never disconnect from wifi. What should the default setting be for the device? I have set back to disconnect on screen going off. What do you guys have set for yours?
Click to expand...
Click to collapse
You need to check that setting each time before you put TF to sleep as some apps will change it on you. Apps seem to demand way mote permissions than they need to do their job
change the wifi settings "disconnect policy" to " never when plugged in". I did that running prime 211 and it saved tons of battery. Its more absolute control. I check my tf all the time so i dont miss any updates n stuff. I have my phone too.
Matterhorn said:
I have a B50 dock and a B60 Transformer. My Transformer began draining no matter which options I set with wifi and screen etc., previously I had a very low battery drain. I started looking around and discovered some apps that I had installed had automatically initiated auto synch settings. I disabled all auto Synch options and now it is going into deep sleep and battery drain has stopped.
Click to expand...
Click to collapse
Thanks, are all these autosync settings in one place or in the individual apps
wilx said:
The last few days my TF101 keeps draining over night, when I look at my battery stats it says 98% is Wifi. I'm not sure what is happening, should I think it is the Dock battery drain problem, or do you think I have a bad app that is keeping wifi going ? If so, how can I find it? I am on a custom rom Revolution 2.3.0 and was wondering if I may be better off trying to go back to the stock WW rom but with root? in preparation for ICS?
Also could this be sleep problem maybe?
Thanks all
Click to expand...
Click to collapse
I chased this up recently in http://forum.xda-developers.com/showthread.php?t=1276670
I've found the same issue, something is resetting my wifi policy - probably some app or service I've downloaded.
I'm running Revolver 3.11.1 with default rom and even after flashing and trying the old dock firmwire I'm not having any luck. I've been investigating writing a service to identify and log changes so I can track the culprit, in the meantime I'm using auto airplane off as someone else suggested, its a perfectly working alternative but I'd rather minimise the bits and pieces trying to regulate what should be normal system controls...(given thats likely what got us here in the first place )

Why is my battery life so bad?

ROM: CM9 latest nightly
Kernel: CM9's own
Radio: T-Mobile's UVLC8 (yes, I'm on T-Mobile)
Brightness: Auto (shown in screenshot)
Synced Gmail accounts: 3
Accounts in Email app: 0
My battery drops 20% in 42 minutes, which means it will be depleted in 3.5 hours. And this is mostly due to the screen. Why? I use the phone moderately and ALWAYS press the Power button to turn the screen off whenever I'm done replying to a text or doing anything with it.
Any suggestions?
Well judging from your notification bar you have bluetooth, WiFi, fb sync all on and you aren't even connected to a WiFi network or Bluetooth device. Try turning those off when they are not needed. Also go into the Facebook app and go to settings and change you sync time to a little longer than an hour (if you can stand it). Try that for now and see what happens
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Some info on screen on time would help, 3.5hrs screen on time is barely below average. I would expect that if FB is always syncing and blue tooth.
Also I would verify you don't have a wake lock going from charging. You can check with CPU Spy, better battery stats, as well as some others. Cpu spy is likely the easiest way.
Sent from my SGH-I727 using Tapatalk 2
Every once in a while I'll get a flash that does this, the battery just seems to be losing its will to live. I don't understand it myself but I restore my last nandroid backup, and then flash again. After that all goes back to normal.
ckck543 said:
Well judging from your notification bar you have bluetooth, WiFi, fb sync all on and you aren't even connected to a WiFi network or Bluetooth device. Try turning those off when they are not needed. Also go into the Facebook app and go to settings and change you sync time to a little longer than an hour (if you can stand it). Try that for now and see what happens
Click to expand...
Click to collapse
I always keep WiFi and Bluetooth on. I thought neither one of those really used a lot of power unless actually connected. I use BT only in my car and WiFi only at home (evenings). My FB refresh interval is set to 1h. I hardly think this is draining my battery.
lnfound said:
Some info on screen on time would help, 3.5hrs screen on time is barely below average. I would expect that if FB is always syncing and blue tooth.
Also I would verify you don't have a wake lock going from charging. You can check with CPU Spy, better battery stats, as well as some others. Cpu spy is likely the easiest way.
Click to expand...
Click to collapse
Better Battery Stats wasn't free, so I installed CPU Spy and Battery Spy, I am letting the phone charge to 100% and then, I'm going to unplug it and report after about 30 minutes.
meet2x4 said:
Every once in a while I'll get a flash that does this, the battery just seems to be losing its will to live. I don't understand it myself but I restore my last nandroid backup, and then flash again. After that all goes back to normal.
Click to expand...
Click to collapse
I will flash last night's CM9 nightly and see if I notice a difference.
Thank you all!
Razor1973 said:
I always keep WiFi and Bluetooth on. I thought neither one of those really used a lot of power unless actually connected. I use BT only in my car and WiFi only at home (evenings). My FB refresh interval is set to 1h. I hardly think this is draining my battery.
Click to expand...
Click to collapse
Might want to think of picking up some NFC tags and setting profiles so stuff like Bluetooth will automatically turn on when in your car, and off when you leave. And BT and Wifi do drain power when not connected because they are searching for connections.
Better Battery Stats wasn't free, so I installed CPU Spy and Battery Spy, I am letting the phone charge to 100% and then, I'm going to unplug it and report after about 30 minutes.
Click to expand...
Click to collapse
It's free to XDA members: http://forum.xda-developers.com/showthread.php?t=1179809
dakpluto said:
Might want to think of picking up some NFC tags and setting profiles so stuff like Bluetooth will automatically turn on when in your car, and off when you leave. And BT and Wifi do drain power when not connected because they are searching for connections.
It's free to XDA members: http://forum.xda-developers.com/showthread.php?t=1179809
Click to expand...
Click to collapse
But wouldn't WiFi and Bluetooth show in the battery usage screen with a high percentage? They would show by themselves or under radio and those aren't high at all. It's all on the screen. That's the problem, it seems. And what I explained earlier is that I don't use it much. I will get a text message, I'll reply and automatically turn the screen off before I set the phone down. I never forget this. I'm actually anal about it. LOL
I just installed Better Battery Stats (thanks for the tip!!!) and will test with all 3 apps as soon as I unplug my phone to go to lunch. I haven't been able to do this yet. Crazy day here at work.
Thanks again.
Razor1973 said:
But wouldn't WiFi and Bluetooth show in the battery usage screen with a high percentage? They would show by themselves or under radio and those aren't high at all. It's all on the screen. That's the problem, it seems. And what I explained earlier is that I don't use it much. I will get a text message, I'll reply and automatically turn the screen off before I set the phone down. I never forget this. I'm actually anal about it. LOL
I just installed Better Battery Stats (thanks for the tip!!!) and will test with all 3 apps as soon as I unplug my phone to go to lunch. I haven't been able to do this yet. Crazy day here at work.
Thanks again.
Click to expand...
Click to collapse
that's covered under android system I believe. Most important, it causes wake locks that keeps your phone from deep sleeping.
Flash Instigators Kernel with Smartass/Badass scripts (not a joke....)
It will help you tremendously. You must reflash with every nightly update you do.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
OK, so 4.5 hours and battery discharged 38%. I guess that's not terrible, but my screen was only on for 26 minutes of that time and the phone is reporting 55% of the battery drain came from screen use. I feel battery life could be a lot better just because of this.
What else do these screenshots tell you guys?
I noticed KIK Messenger and MailDroid there. They both sync a lot. I do have a couple of IMAP accounts on MailDroid that I forgot to mention in my OP. But, still, I go back to the fact that most of the drain comes from the screen. These aren't related.
onealvideo said:
Flash Instigators Kernel with Smartass/Badass scripts (not a joke....)
It will help you tremendously. You must reflash with every nightly update you do.
Click to expand...
Click to collapse
Oh, true!!! I flashed InstigatorX's kernel when I first started flashing the nightlies, but, since I flash them every 2-3 days, I completely forgot to reflash the kernel. OK, it's more like I didn't know it was getting overwritten and I had to reflash it. Thanks for the reminder!!! By the way, do you go with stable (4.0b) or the latest experimental (5.3.2)? Also, do you just flash the kernel? What are those scripts and what do you do with them? I did not understand his instructions. Maybe I should be asking there, but since I already have you here... LOL
Razor1973 said:
OK, so 4.5 hours and battery discharged 38%. I guess that's not terrible, but my screen was only on for 26 minutes of that time and the phone is reporting 55% of the battery drain came from screen use. I feel battery life could be a lot better just because of this.
What else do these screenshots tell you guys?
I noticed KIK Messenger and MailDroid there. They both sync a lot. I do have a couple of IMAP accounts on MailDroid that I forgot to mention in my OP. But, still, I go back to the fact that most of the drain comes from the screen. These aren't related.
Click to expand...
Click to collapse
For one, turn your screen brightness down. I use auto-brightness and never have a problem seeing it, and my battery drain is ok that way.
Two, you've got the AudioOut_1 wakelock. Turn off system sounds in the settings menu (keytones, touch sound, screen lock sound, vibrate on screen tap) and that will take care of that.
Any type of instant messenger service (Skype is well-known for doing this) will wakelock your phone while it searches for IMs. No way around it other than an uninstall. You can't control IMAP pushing, but you can control folder polling, which eats up a lot of battery. I'd set your MailDroid accounts to not poll folders automatically more than once a day.
And definitely turn Bluetooth off when you're not actively connected to something. You might as well be using your phone as a flashlight with how much power BT burns through.
I am currently on RC2. I went to the 21/22 nightly but was not liking how it was behaving so I went with the RC for now.
In INSTIGATORS forum you will see in the links to the kernel one that says <-------- works with RC2.
I used that one and I am happy. Sure you could do the newer ones but I am happy where I am at currently.
Just boot into recovery and install from zip.
(Assume u download the zip on your phone....)
Its easy as pie!
You can play with the settings if you want but the default settings work pretty freaking good!
I would for sure recommend going to that forum as Instigator himself can answer ALL your questions in depth.... I am merely a messenger and user of his kernel.... wish they would just merge it into the cm9....
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
T.J. Bender said:
For one, turn your screen brightness down. I use auto-brightness and never have a problem seeing it, and my battery drain is ok that way.
Two, you've got the AudioOut_1 wakelock. Turn off system sounds in the settings menu (keytones, touch sound, screen lock sound, vibrate on screen tap) and that will take care of that.
Any type of instant messenger service (Skype is well-known for doing this) will wakelock your phone while it searches for IMs. No way around it other than an uninstall. You can't control IMAP pushing, but you can control folder polling, which eats up a lot of battery. I'd set your MailDroid accounts to not poll folders automatically more than once a day.
And definitely turn Bluetooth off when you're not actively connected to something. You might as well be using your phone as a flashlight with how much power BT burns through.
Click to expand...
Click to collapse
Screen brightness: I use auto as well. It's in one of my first screenshots in this thread.
AudioOut_1 wakelock: Done. Thanks. I'm going to miss the touch and screen lock sounds. LOL I left dial pad touch tones and volume rocker music controls in that same secton checked, by the way.
MailDroid: I went through all the settings, both general and for the e-mail accounts and couldn't find a place to specify folder polling interval. Do you have it installed? If so, could you tell me exactly where to find this please?
Bluetooth: I'll try my best to turn it on only when I needed. I could also follow dakpluto's suggestion with the NFC tags. But then, I'd have to leave NFC on. Doesn't that drain battery too?
And you see, although all of these will help, don't you agree based on my screenshots that the biggest offender here is the screen and this is the area I should really be looking at?
onealvideo said:
I am currently on RC2. I went to the 21/22 nightly but was not liking how it was behaving so I went with the RC for now.
In INSTIGATORS forum you will see in the links to the kernel one that says <-------- works with RC2.
I used that one and I am happy. Sure you could do the newer ones but I am happy where I am at currently.
Just boot into recovery and install from zip.
(Assume u download the zip on your phone....)
Its easy as pie!
You can play with the settings if you want but the default settings work pretty freaking good!
I would for sure recommend going to that forum as Instigator himself can answer ALL your questions in depth.... I am merely a messenger and user of his kernel.... wish they would just merge it into the cm9....
Click to expand...
Click to collapse
Here's what I just did:
1) Installed latest (7/23) CM9 nightly.
2) Installed InstigatorX's 5.3.2 experimental kernel using CWM.
3) Installed InstigatorX's BadAss script using CWM on top of the kernel (I guess that's how you do it).
I will see how my battery behaves. It'll be difficult to know which of the many things I did is the one that yielded the biggest improvement, however. Oh well.
Thank you all!
I'm testing aokp w/ stock kernel ondemand 192/1512 and it actually is working decently for me so far. Streamed like 1 1/2 hr of video last night and 2hr of Pandora today at the gym. :good:
Sent from my SGH-I727 using Tapatalk 2
You see? Why can't I get HALF of that?
InstigatorX CM9/AOKP Kernel - Which One?
Razor1973 said:
... do you go with stable (4.0b) or the latest experimental (5.3.2)? Also, do you just flash the kernel? What are those scripts and what do you do with them? I did not understand his instructions. Maybe I should be asking there, but since I already have you here... LOL
Click to expand...
Click to collapse
That's what I'm trying to figure out:
Which version (e.g. 4.0b or latest)?
Which script(s)?
Anything else?
(There's tons of information in these forums, but finding it buried deep in threads is like looking for a needle in a haystack.)
From the looks of that screen shot. The phone is barely being used, see how the blue isn't solid for most of the running time?
Sent from my SAMSUNG-SGH-I727
kr3w1337 said:
From the looks of that screen shot. The phone is barely being used, see how the blue isn't solid for most of the running time?
Sent from my SAMSUNG-SGH-I727
Click to expand...
Click to collapse
Yep I have power saving stuff such as turn off wifi when idle, I dont have GPS on 24/7 and I dont have wakelocks, I also set mine to use 3G/4G rather than LTE. If it was a solid blue that means something will be constantly on draining the battery.
I'm testing aokp w/ stock kernel ondemand 192/1512 and it actually is working decently for me so far. Streamed like 1 1/2 hr of video last night and 2hr of Pandora today at the gym.
Click to expand...
Click to collapse
Those are the two lines from the front and the end. The blanks are deep sleep over night. Remember I said "testing aokp" "stock kernel"
If you want my "light" use then here it is lol.
Trinition said:
That's what I'm trying to figure out:
Which version (e.g. 4.0b or latest)?
Which script(s)?
Anything else?
(There's tons of information in these forums, but finding it buried deep in threads is like looking for a needle in a haystack.)
Click to expand...
Click to collapse
For performance I prefer smartassv2 for power saving I would go for badass governor. With badass it doesn't jump clocks to max but goes by phases thus not aggressive and doesn't eat a lot. Test them out read the change log to see if changes pertain to you :good:
Sent from my SGH-I727 using Tapatalk 2

[Q] Which Kernel should I use to reduce battery drain? [CM 10.1]

Hey everyone!
I flashed CM 10.1 yesterday (cm_p500-userdebug-cm-10.1 from jenkins. androidarmv6.org/job/android/ and I'm amazed how smooth and perfect it is working (A huge 'Thank you!!' to the developer )
The problem is that my battery drain is awful. It took less than 8 hours today to completely discharge, though I hardly touched it.
I used Battery Calibration and also installed "WakeLock Detektor" to see where the problem is, and it stated that my phone isn't asleep 99% of the time though the display is turned off most of the time :crying:
The main reason is a kernel-related thing named "suspend_backoff" that keeps it awake.
I wanted to install a different kernel, but I got no clue which one... I actually planned on installing the recent DorimanX-Kernel, but then recognized that this is only available for the Galaxy SII
Can anyone recommend a Kernel that keeps my system running smooth but the battery drain at a minimum? I basically need my phone for Messaging (SMS, WhatsApp, E-Mail), Calendar and once in a while as navigation system. So no need for spectacular game performances or so.
Are there other Ways to improve my battery life on that phone (I've read all the general tips for improving battery life)? Maybe some OC things I can change manually?
I'm grateful for any help. Thanks!
Helbelinc said:
Hey everyone!
I flashed CM 10.1 yesterday (cm_p500-userdebug-cm-10.1 from jenkins. androidarmv6.org/job/android/ and I'm amazed how smooth and perfect it is working (A huge 'Thank you!!' to the developer )
The problem is that my battery drain is awful. It took less than 8 hours today to completely discharge, though I hardly touched it.
I used Battery Calibration and also installed "WakeLock Detektor" to see where the problem is, and it stated that my phone isn't asleep 99% of the time though the display is turned off most of the time :crying:
The main reason is a kernel-related thing named "suspend_backoff" that keeps it awake.
I wanted to install a different kernel, but I got no clue which one... I actually planned on installing the recent DorimanX-Kernel, but then recognized that this is only available for the Galaxy SII
Can anyone recommend a Kernel that keeps my system running smooth but the battery drain at a minimum? I basically need my phone for Messaging (SMS, WhatsApp, E-Mail), Calendar and once in a while as navigation system. So no need for spectacular game performances or so.
Are there other Ways to improve my battery life on that phone (I've read all the general tips for improving battery life)? Maybe some OC things I can change manually?
I'm grateful for any help. Thanks!
Click to expand...
Click to collapse
I found SweetnSour's version 11 kernel quite good with cm10.1.
However, the ROM needs some help to get good battery life:
Install 2xBatterysaver. It will turn off data and WIFI when the screen is off (turn them on periodically to allow syncing). There are various apps like this one.
Control WIFI. Use Y5 battery saver or Whiz WIFI manager. Y5 is tiny and effective but crashes on cm10.2. Both check for favorite hotspots, leave WIFI on and turn it off when leaving the hotspot.
Thanks for your quick response!
Just tried to flash Sweetnsour's Kernel, but it won't work. I flashed this one --> versionFINAL-CFS.zip
Is that the correct one or rather one of those? -->" version11-CFS-TWRP.zip" or "version11-CFS.zip"
Edit: What actually are CFS respectively TWRP? Searched the forums but couldn't find an answer
[solved] or rather [solvished]
After days of trial and error, cutting and re-enabling all connections from WiFi to 3G and hibernating, un- and re-installing basically all of my apps and trying loads of other roms I didn't love as much as this in the least, I found the source for my phone being awake basically 100% of the time.
The changelog of the mod stated that there's still this WiFi-issue that keeps the phone awake.
Well, though I've tried before, It now works: switching off the WiFi connection finally gets my phone to sleep.
I think I'll just be running on my mobile data for the followin days or weeks until this bug has been fixed.
Btw: A little hint for the developer (I'm posting here, since I'm a noob and can't post in the developers forum): When switching the WiFi options to turn out WiFi whenever screen goes dark, it won't connect afterwards. I always needed to reboot my phone when I wanted WiFi to work again. (This bug also caused my mobile data not to work. It apparently thought WiFi was running, though it couldn't connect.)

Need help on battery life and CPU usage

I have a Samsung Galaxy S7 and the battery was doing fine. A few weeks ago the phone started getting quite slow and the battery life went way down. I had installed a few apps around then, so I removed them and still battery life was bad. I tried restarting the phone and that didn't help. At the time I was running Marshmellow and I was using OSMonitor to watch the system. I was finding that Android OS was taking most of my battery and 30% of the CPU all of the time. Not long after that Nougat became available and I upgraded thinking that might help. It didn't help and OSMonitor no longer worked. I switched to GSam Battery Monitor and used adb to give it the permissions to see all app information. I'm still finding that the Kernel is taking 28% of my battery and Android System is taking 37% of my battery and I can't figure out why. I would rather not need to do a full reset and install all of my apps and settings again, so I'm asking if anyone out there has ideas on things to try and fix this. This is a non-rooted phone running the stock image from Samsung/Verizon.
Thanks for any help.
try activate the Battery Saving option and use it for a day and see if helps
I've had this happen to me before. The phone was getting seriously hot while it was happening too. I decided to do all I can without doing a factory reset (I was on vacation at the time, so no access to something to backup my data).
I cleared the cache of all apps. Then I disabled all of the stock apps I didn't need (like Gear VR). I also shuttered apps running in the background to about a max of 3 apps open at any given time. That stopped the insane heat issue, but Android System was still sucking 30% of the battery. I turned off Always On Display, that got me down to about 25%. A factory reset got the phone down to around 10%, and I never saw the issue again.
Before you do that I would recommend checking out this thread below as there does appear to be a bunch of other possible solutions provided by others.
https://forum.xda-developers.com/s7-edge/help/how-experiencing-android-battery-drain-t3327730/page51
Djuganight said:
try activate the Battery Saving option and use it for a day and see if helps
Click to expand...
Click to collapse
But then my background syncing is turned off too...
I didn't need this before, so wondering why I should need it now.
I had same issues and was able to fix it. See the following thread for details.
https://forum.xda-developers.com/showthread.php?p=71558514
Try this , it helped me a lot .
Download from the XDA forums the Kernel named : "Apollo Kernel" v7
Just flash it , and when you install it , if you dont use your phone for high end games or hard work,that requires high end specs , then you can underclock the cpu/gpu .
It s a battery life saver, plus , your components will be much better in terms of thermals/life

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