After three failed flashes of JellyBro 231 from 8/1 and Devil 1.0.4 test3, I thought I had it. Things were buttery. I had an entire morning of slick performance.
I then played with the Devil Kernel Config app to try and get some additional time out of my battery (drain is considerably higher than what I had on Team Whiskey's last Froyo build which, admittedly, sets the bar quite high for efficiency). Playing with deep idle and min/max freq settings invariably seem to reward me with sleeps of death.
I'll take this ROM as it is with Devil - it works, it's smooth, and I can charge my phone at work. If anyone has suggestions for squeezing out a few extra hours, though, I'd happily take them.
[Bump]
OK, at least part of the issue appears to be due to Exchange Services and excessive wakelocks due to said service. It appears to be a common issue on all 4.x devces. Rebooting my device appears to help for some time but then the issue returns within a day or two. Battery life is average when wakelocks aren't killing the battery entirly but when the device is held "awake" by the service, it drains 75% in about 6 hours.
FYI, my exchange account is set to poll once an hour, not "push". Such a schedule helped my battery life immensely on my Froyo install. Hope echange services get fixed eventually.
My question still remains if there are any other power-saving tips people might have.
What are your current settings in devil config?
I don't use exchange, in fact I removed it.
A couple of things that help me
1. Re calibrate battery!
I went from 6hrs on charge to 16+ after calibration with battery calibration app!
2. I keep sync off and manually sync when needed....
3. I have minimal widgets, and no live wallpapers (battery killers)
4. In settings>WiFi>press menu>advanced>WiFi when sleep (never).
All these things I read on a thread about extending battery life.
Currently running Hellybean 0806.
drool on my chin from a mouth full of jellybeans
samsgun357 said:
What are your current settings in devil config?
I don't use exchange, in fact I removed it.
A couple of things that help me
1. Re calibrate battery!
I went from 6hrs on charge to 16+ after calibration with battery calibration app!
2. I keep sync off and manually sync when needed....
3. I have minimal widgets, and no live wallpapers (battery killers)
4. In settings>WiFi>press menu>advanced>WiFi when sleep (never).
All these things I read on a thread about extending battery life.
Currently running Hellybean 0806.
drool on my chin from a mouth full of jellybeans
Click to expand...
Click to collapse
I reverted my settings in devil config to the defaults, so nothing remarkable there. As for your suggestions, please see below:
1. Perhaps, but consider this: after charging overnight, my battery drained 20% in less than 2 hours. The battery usage chart indicated that the Android System process kept it awake the majority of that time. Rebooting the phone causes it to have a much more modest drain, my "Awake" status bar isn't a continuous green bar but, rather, a broken bar as I would expect. It would seem it's not just Exchange at fault, nor is it simply a battery calibration issue, otherwise I wouldn't see the excessive drain in association with a "keep awake" process. The measure of charge drop can be directly correlated to the keep awake status - the less the phone is kept awake, the less my battery is drained.
2. I've been using Froyo for 1.5 years and have had the same sync settings that I have now in Skang - hourly for Exchange and default for Google. After 16 hours uptime in Team Whiskey's ROM, I was generally down to 50%-60% battery. Now I don't even last 6 hours with this issue.
3. No more widgets than what I had in Team Whiskey's ROM. My calendar and Google Voice inbox are the only two. No live wallpapers either.
4. WiFi is on but, again, this is exactly what I had set in Team Whiskey's ROM.
I'm not trying to trumpet Team Whiskey's Froyo ROM for the sake of promoting it. Simply trying to indicate that, from a settings standpoint, I got apples to apples here. I already was aware of your suggested means of getting extra time and, not trying to be dismissive, but I prefer my settings and I know it should be possible to get better battery life with them. Perhaps I should have been more explicit in my question - does anyone have a means of squeezing extra battery life using the Devil Kernel Config. Deep Idle and min clock do a great job of saving battery... and sending my device into a SoD. If there are specific clock speeds to avoid/try, that would be helpful, not to mention if there is anyone who actually got deep idle to work. In concept, it is great.
Perhaps, now that I've seen these two "keep awake" issues (Exchange and Android System) this thread is less relevant - I'm convinced that I will get similar battery life to Team Wiskey's ROM if I can just keep certain processes from keeping the phone awake. Admittedly, "Android System" is not the most helpful in diagnosing the issue as it appears to be a dumping ground for miscellaneous processes' statistics rather than a specific process. In any case, I appear to have an easy way of reproducing the issue - charge for an extended period of time and remove from the charger without a reboot. Rebooting seems to fix the issue until the next charging cycle. I can live with that for now.
Thanks for your input, samsgun357. Sorry I wasn't more explicit in my original question as well as measures I've already considered - I could have saved you a little typing.
If anyone else has noticed this issue with "keep awake" processes that go away after reboot, I'd appreciate input. I'd like to see if there's any way I could help to uncover the root cause of this issue.
PlacidCat said:
I reverted my settings in devil config to the defaults, so nothing remarkable there. As for your suggestions, please see below:
1. Perhaps, but consider this: after charging overnight, my battery drained 20% in less than 2 hours. The battery usage chart indicated that the Android System process kept it awake the majority of that time. Rebooting the phone causes it to have a much more modest drain, my "Awake" status bar isn't a continuous green bar but, rather, a broken bar as I would expect. It would seem it's not just Exchange at fault, nor is it simply a battery calibration issue, otherwise I wouldn't see the excessive drain in association with a "keep awake" process. The measure of charge drop can be directly correlated to the keep awake status - the less the phone is kept awake, the less my battery is drained.
2. I've been using Froyo for 1.5 years and have had the same sync settings that I have now in Skang - hourly for Exchange and default for Google. After 16 hours uptime in Team Whiskey's ROM, I was generally down to 50%-60% battery. Now I don't even last 6 hours with this issue.
3. No more widgets than what I had in Team Whiskey's ROM. My calendar and Google Voice inbox are the only two. No live wallpapers either.
4. WiFi is on but, again, this is exactly what I had set in Team Whiskey's ROM.
I'm not trying to trumpet Team Whiskey's Froyo ROM for the sake of promoting it. Simply trying to indicate that, from a settings standpoint, I got apples to apples here. I already was aware of your suggested means of getting extra time and, not trying to be dismissive, but I prefer my settings and I know it should be possible to get better battery life with them. Perhaps I should have been more explicit in my question - does anyone have a means of squeezing extra battery life using the Devil Kernel Config. Deep Idle and min clock do a great job of saving battery... and sending my device into a SoD. If there are specific clock speeds to avoid/try, that would be helpful, not to mention if there is anyone who actually got deep idle to work. In concept, it is great.
Perhaps, now that I've seen these two "keep awake" issues (Exchange and Android System) this thread is less relevant - I'm convinced that I will get similar battery life to Team Wiskey's ROM if I can just keep certain processes from keeping the phone awake. Admittedly, "Android System" is not the most helpful in diagnosing the issue as it appears to be a dumping ground for miscellaneous processes' statistics rather than a specific process. In any case, I appear to have an easy way of reproducing the issue - charge for an extended period of time and remove from the charger without a reboot. Rebooting seems to fix the issue until the next charging cycle. I can live with that for now.
Thanks for your input, samsgun357. Sorry I wasn't more explicit in my original question as well as measures I've already considered - I could have saved you a little typing.
If anyone else has noticed this issue with "keep awake" processes that go away after reboot, I'd appreciate input. I'd like to see if there's any way I could help to uncover the root cause of this issue.
Click to expand...
Click to collapse
I have an Infuse SGH-i997.
I've seen quite a few reports of battery drain, simply because I'm looking for them.
Here is a thread for you to check out. There are quite a few links from there too.
http://forum.xda-developers.com/showthread.php?t=1408433
note times and dates
have fun
Related
Hello everyone! I would have posted this in the actual GSB thread but I don't seem to have the correct privileges yet so I am posting here instead.
First off, I just want to thank workshed for his awesome work. I really do love the ROM and everything about it. However, I have a few small issues with it that I can't seem to figure out.
First off, my battery life is terrible. Take yesterday for example. I used my phone probably twice to send some texts in the morning and to check the time. Charged it throughout the night and pulled it off the charger when I woke up and began my day. Within two hours, my phones battery was down to 75%. Five hours later, it was completely dead and I hadn't even used it.
My second issue is with settings. For some reason, when I reboot, some of my setting don't get saved. The one thing that really bothers me is the keyboard. I have Swype installed and every time the phone shuts off, I have to go into settings and re-enable Swype as my keyboard. It is just a hassle and is kind of frustrating, especially when I forget to do and then go to send a message.
Other than those two issues, I absolutely love the ROM and wouldn't change it for anything else. Anyone have any suggestions for what I can do about my few issues?
Xyercyn said:
First off, my battery life is terrible. Take yesterday for example. I used my phone probably twice to send some texts in the morning and to check the time. Charged it throughout the night and pulled it off the charger when I woke up and began my day. Within two hours, my phones battery was down to 75%. Five hours later, it was completely dead and I hadn't even used it.
Click to expand...
Click to collapse
Recharge it until you get a green light. Restart the phone in Recovery, go to the Wipe menu, and wipe the battery stats (I'd keep the phone on power for this.) Restart the phone, pull the power and use as you normally would. Ignore anybody who tells you that you must run the battery down until the phone shuts itself off - this is really not great for the battery (though once a month or so isn't bad), and really isn't necessary for the battery calculations to reset themselves with new usage stats. The longer you can go the better, but it's not necessary to change your phone usage habits so that you have a completely discharged phone.
They covered this very topic in Lifehacker today! http://lifehacker.com/#!5786717/get...ted-android-phone-by-wiping-its-battery-stats
doogald said:
Recharge it until you get a green light. Restart the phone in Recovery, go to the Wipe menu, and wipe the battery stats (I'd keep the phone on power for this.) Restart the phone, pull the power and use as you normally would. Ignore anybody who tells you that you must run the battery down until the phone shuts itself off - this is really not great for the battery (though once a month or so isn't bad), and really isn't necessary for the battery calculations to reset themselves with new usage stats. The longer you can go the better, but it's not necessary to change your phone usage habits so that you have a completely discharged phone.
They covered this very topic in Lifehacker today! http://lifehacker.com/#!5786717/get...ted-android-phone-by-wiping-its-battery-stats
Click to expand...
Click to collapse
Thank you for that information, I shall try it out and see if it helps!
I also forget to mention one more error. Whenever I boot up the phone, my Facebook account sets itself to not sync and I lose all my contact pictures. I then have to open the Facebook application and set it to sync again.
EDIT:
Sorry, didn't realize it was a double post!
My battery life is similar to the OP's. I can make it through the day, but since I am ususally down to about 60% by one or two pm (from 6 or 7 am) I prefer a mid-day charge just to make sure I can last through the evening.
I just flashed [ROM][3/22/2011] GSB v2.2 | GingerBread 2.3.3 [CM7.0.0 RC2 NIGHTLY] a few days ago and it has been running great, but I noticed that my green light (battery fully charged) now comes on @ 90%.
Before it would not turn from amber to green till 100%. Should I wipe battery stats?
Under battery use (sry no screenies) there is nothing unusual:
Display @57%, everything else under 10%.
But when I checked Spare Parts I noticed that my little Eris won't sleep!
It looks like Android system is the culprit, keeping a partial wake lock.
Battery History in Spare Parts:
Other Usage - Since last unplugged
Running 100%
Screen on 13.2%
Wifi on 100%
Wifi running 91.6%
Partial wake usage - Since last unplugged
Android System almost a full blue bar, all other apps minimal bars
The phone has more or less been sitting at my desk at work in wifi with light usage.
Anyone have any idea why Android System is trying to eat my battery?
i had battery problems on gsb its a great rom. i switch to ginger tazz. with tazz's rom i get more then 20hrs b4 it says to connect charger thats with the display on about 4 hours and wifi on and running facebook tapatalk calls texts and whatever i think of doing.
I'm running GSB 2.5 CM RC 4 and I now have been able to get 25 hours with 70% of battery left. I used to be able to get maybe 24 hours before it died. Now your mileage may vary but this is what I do. I removed Task Killer which was eating a bunch or the battery and after a visit to Amazon's app market their little app was running all the time along with Weather Bug so both of them are now gone. and finally I turned off auto sync ( I can check my email when ever I want and it takes a lot less battery). By turning off auto sync that was what really made the difference for me. Of course there are many things you can do but running WiFi will kill your battery faster than 3g (or at least it does on mine) and I have the screen brightness set at 18. Just a note I leave BT and GPS on all the time when they are not being used an are in standby their usage is quit small.
What works for you would depend on if you want your email pushed to you all the time and if you have to have your WiFi on instead of 3g.
Again it's just my observations for my phone.
Really you should just do the first suggestion and recalibrate your battery.
Also if you read closely in workshed's log, he specifically said to a full wipe not only formatting external memory but also doing a dalvik/cache wipe. You may as well also wipe the battery stats while you're at it.
Personally I'm running GSB 2.5 and it's simply amazing. 60% of the battery gets me from wake-up alarm to nighttime charge.
Hope you figure it out!
After I installed GSB 2.5, my battery also seems to be rapidly discharging. Takes less than an hour of no use, wifi-on to drop from 100% to ~80%. I did a full discharge calibration on my battery as soon as I flashed to this GSB 2.5
I will attempt the simple batt stat wipe at 100% and see if that helps at all. I'll let you guys know.
Hi all,
I love the Sony Tablet except its battery life. for something that is so huge compared to the others similar products out there, I am sure that they could have squeezed a bigger battery into the unit.
The power capacity is pretty weak. Let's hope that Sony offers a higher capacity battery size. I would gladly pay to upgrade it.
That's weird, my battery life is fantastic. If I play games on it all day it'll last 8-12 hours, but if I just use it intermittently and moderately it'll easily last me a couple of days. On standby it only uses a couple percent a day if that!
I'm the same as unclespoon. Even during heavy use, I get about 9 hours, which is way better than my old Galaxy Tab could ever muster. Standby usage is crazy low, its fantastic!
Not sure what you mean either about being larger than most other devices. The Tablet's 9.4" screen is smaller than almost any other full-size Tab out there (including the iPad) and since the back curves, theres not actually a lot of usable rear space (look at how thin its getting at the thin end, now imagine trying to fit a battery in there!)
I'm not sure you'll find a Tab out there currently with a better combo of size/battery life. The chunkier Toshiba Thrive will last longer, the thinner Galaxy Tab's will last even less, and my Tablet S always outlasts my iPad, so it might just be your device. Try checking Settings -> About -> Battery Use
I'm of the same opinion as the op. My tablet s has dreadful battery life and especially when it isn't doing anything. (50% usage is system standby) my old galaxy 7 was far far better (charged about once a week)
I believe this may just be because it is new (only have 1 full charge) as my galaxy s2 was initially unimpressive and then lasted 3 days of moderate use without charge. Hoping the same will happen to my s1.
Time will tell
My only guess was that you did a shoddy job of conditioning the battery. My old Galaxy Tab (the first 7" one) was hopeless, but when I replaced it, I conditioned the battery better and it was a bit better.
My Tablet S lasts for days and days and the standby usage is tiny. Check whats using your battery in the Battery Use screen and get back to us, we might be able to help..
I noticed advanced wifi lock was causing massive amounts of wakelocks (8 hours out of 10 according to the stats in settings/about).
betterbatterystats is not available via market but I am trying out the XDA APK now
wintermute000 said:
I noticed advanced wifi lock was causing massive amounts of wakelocks (8 hours out of 10 according to the stats in settings/about).
betterbatterystats is not available via market but I am trying out the XDA APK now
Click to expand...
Click to collapse
I noticed that as well. If you have Advanced WiFi lock activated the tablet won't go into deep sleep mode, there of massive battery usage. I still have Advanced WiFi lock on my tablet, but only activate it when I need to download/update something that takes time. Otherwise I turn it off. It's not worth the battry drain.
Wow. Your battery life are fantastic. 9 hours? That's huge. I have not used my Sony Tablet till flat but given the rate of battery loss think maybe the most is about 5 hours which is similar to what many reviewers are saying.
Just can't imagine that those reviewers are so far out of the ball park compared to you guys. I am using juice defender Beta. Not to sure if its helping or not. But at least if I not using WiFi it shuts it off automatically.
My battery used to drain badly during standby. I found that the Friend Stream service was preventing the tab from sleeping. Killed the service a while ago and battery has been fantastic since. Pushed it to 3 days with light use. About 3 hrs of browsing and facebook. My battery level is at 68%, been off power for 20h40 mins, and used for about 4hrs today - facebooking, Internet browsing. Note that no specific conditioning was performed.
What are the settings that you have on your Tablet? Auto brightness, background sync turned off ?
how did you stop friendstream, and what the heck is it, did you just kill the process and it stayed dead? (sometimes as u know u kill process but it will come back).
Good question. What is the Android software revision now. My is Android 3.2.1 (revision 2)
I acutally just uninstalled the crap-app. nothing I use anyway. It is an app for facebook, twitter and other social networks. So just get rid of it. Uninstall and be happy
my bad. I confused the HTC name and Sony name.
Social Feed Reader was misbehaving. Once started it kept running... rather than dropping off to sleep (and into Cached Apps).
Something wasn't right so I force stopped it and it stayed dead.
An additional note - the Setup, Applications, Running Applications feature isn't 100%. Some background apps aren't displaying as running or Cached. Go figure.
So any special method to stop the social feed reader?
I'm getting those kinds of numbers on mostly auto brightness (and sometimes lower, at night), with background sync turned on, WiFi sleep policy set to default, and no battery monitoring or saving apps running. The only thing I did was single initial conditioning cycle and since then its been great.
Also note that software-decoded video files will take a lot more of your battery than the equivalent properly encoded file. I havent had any trouble with Social Feed Reader, but I never even set it up and judging by the many stories around here, I would uninstall it if you're worried about battery..
asayanna said:
My battery used to drain badly during standby. I found that the Friend Stream service was preventing the tab from sleeping. Killed the service a while ago and battery has been fantastic since. Pushed it to 3 days with light use. About 3 hrs of browsing and facebook. My battery level is at 68%, been off power for 20h40 mins, and used for about 4hrs today - facebooking, Internet browsing. Note that no specific conditioning was performed.
Click to expand...
Click to collapse
good to know, thanks for sharing.
agc93 said:
I'm getting those kinds of numbers on mostly auto brightness (and sometimes lower, at night), with background sync turned on, WiFi sleep policy set to default, and no battery monitoring or saving apps running. The only thing I did was single initial conditioning cycle and since then its been great.
Also note that software-decoded video files will take a lot more of your battery than the equivalent properly encoded file. I havent had any trouble with Social Feed Reader, but I never even set it up and judging by the many stories around here, I would uninstall it if you're worried about battery..
Click to expand...
Click to collapse
Hi, that's good to know. Thanks for sharing. Unfortunately think I screwed up the initial conditioning. so I guess I will have to live with the 5 hour battery of my Tablet.
Btw how do you do battery conditioning?
cow138 said:
So any special method to stop the social feed reader?
Click to expand...
Click to collapse
In Setup, Applications, Running Services have a look at the awake time (listed on the right side) of the running processes. You'll note that system processes (the ones with the Android icon) have been awake since last boot.... but you might finds others that are as well. I noted Social Feed Reader showing high awake time and decided to nuke it. Simply click the offending app. You'll be given the option to stop the app... which is what I did. It's an app so doesn't restart once killed. Hope that helps...
Final thought: at the top right of the screen there's a 'Show cached processes' option.
The could be an offending app in there. Kill any installed app you suspect might be a problem and see if that helps.
my battery life is excellent.
Sent from my GT-I9100 using xda premium
Hi everyone
So I recently got a S2, upgraded it from stock Gingerbread to stock ICS via Kies, then flashed CM9. CM9 was great, but I quickly noticed worse battery drain than that of GB. I sorted out all wakelocks, now facebook is the top one in better battery stats list and it's only 10mins in a day so I don't think that's a problem. When charging, vbus_present shows up and keeps the phone from sleeping, but that's a normal thing when the phone is plugged, right? CPUspy shows the phone is in deep sleep the majority of time I don't use it, so I assume I have no wakelock problem.
But even then, the battery still seems a bit bad. When in deep sleep with wifi and mobile data off, it would lose around 1.5% per hour; and with moderate/high use (internet with wifi or gaming), I'd be lucky to have it last 3 hours. Charging to 100% from zero takes about 3 hours.
I also tried recalibrating the battery through BC, but haven't noticed too much of a difference.
Recently I found a guide on disabling fast dormancy via the build.prop file. Still waiting for results though.
So, my questions
1, My battery usage seems normal, doesn't it? 1.5% per deep sleep hour is acceptable I guess, but 3 hours of usage seems a bit short. Too short.
2, What effects does fast dormancy have?
1) Totally unacceptable. Mine lasts at least 7-8 hours with high use..
Does your phone heat up while the heavy use ???
What brightness level do you use for the display ???
How many apps do you have that can gain internet access ???
2) By default, the Samsung Galaxy S II has Fast Dormancy support enabled. One of the goals of Fast Dormancy is to increase the battery life of a device, by limiting the amount of signaling between the phone and the cell network. But, when Fast Dormancy it is not enabled in the network and is enabled on the phone it ironically works the other way around, and actually drains more battery than before.
Luckily, Fast Dormancy can be disabled on the phone. For the Galaxy S II, do the following:
Dial *#9900#
Press “Disable Fast Dormancy“
Press “Exit“.
Easy as that!
Thanks for the suggestion I have brightness manual and at around 20%. Wifi is disabled when not used, and mobile data is always turned off unless I need it, so basically apps only get internet access when I want them to. I have also disabled sync for both google and facebook, but fb still pushes notifications to me while it's connected. Is that a major battery drain, and if yes, how to disable it?
Anyways, facebook, instagram, youtube are the only apps than can access the internet. No messengers or anything that may keep a wakelock.
My phone doesn't heat up during normal use, maybe a bit when I do some gaming (Max Payne?)
Also, *#9900# doesn't do anything on my phone. It doesn't bring up a menu or anything like that.
Bump. Guys?
Delivered using Nyan Cat's rainbow powers.
Install BetterBatteryStats (search for it on here/Google Play), might help you nail what's causing the drain.
Yes I did, as said in my original post. After a night the highest wakelock are just around 10 minutes, and that one was facebook. Uninstalling it however had no effect.
Delivered using Nyan Cat's rainbow powers.
Thinking logically, there's got to be something else in those stats (partial wakelocks in particular) that's causing that drain. There's no way having fast dormancy enabled/disabled is either going to cause/fix the drain you've mentioned getting '3 hours of usage'; (I can get 5 & a bit hours screen on with CM9 & variable usage/mostly 'moderate' use) given everything else you say you've tried.
Post BBS logs here if you want someone to have a look.
Edit to add - Also post a screenshot of the 2nd screen in settings/battery, the one that has history 'details' at the top, with the 'mobile network signal' bar underneath the main battery graph.
Here you go: pastebin.com/1UwicChJ
I just registered half a day ago and don't have enough posts yet to paste links, so sorry the phone was only on battery for nearly 2 hours with some light browsing and facebook, but I hope it works.
Anyway, I looked through my running processes, and dsp manager is the only non-OS process running, besides facebook. I got CM9 so it came by default. Could dspmanager be the culprit?
Delivered using Nyan Cat's rainbow powers.
It's a new phone he's got there and I doubt it could be anything battery related itself.
I'm using CM9 nightlies and I get around 9 hours moderate use. It has been said though that a lot of these CM9 builds have battery drain and heat issues.
I use Juicedefender to help with the battery life which seems to work.
Sent from my GT-I9100 using Tapatalk 2
MistahBungle said:
Edit to add - Also post a screenshot of the 2nd screen in settings/battery, the one that has history 'details' at the top, with the 'mobile network signal' bar underneath the main battery graph.
Click to expand...
Click to collapse
About 1/3 of this time was on wifi browsing. The drop is much more drastic if I play games.
Delivered using Nyan Cat's rainbow powers.
A couple of observations. There's nothing that stands right out in the BBS log. The other one is, looking at that graph you've lost ~15% over a bit under 2 hrs. The screen has been on most of the time the phone has been awake (confirmed by the BBS log) if you look at the respective bars. You've also been using WiFi for most of the time the screen has been on/phone has been awake.
Roughly speaking, going by the screenshot, you'd get ~5hrs+/- screen on time if you kept using the phone in the same way you had during that just under 2 hrs, and this is pretty much normal. I haven't had drain issues for ages, so I double checked my details on the 2nd screen of settings/battery to make sure CM9 is reporting these details accurately (screenshot attached). Certainly in my case, this screenshot reflects what my phone had been doing for the just under 5 hrs it had been off charge/since last reboot; that is, >90% of the time in idle/deep sleep. So it probably isn't CM9 reporting these details inaccurately in your case either.
The BBS log & screenshot don't illustrate the problem you talked about in your OP. Now, if I had to take a stab in the dark at what's causing problems when you do have them (and FWIW, I do believe you're having the problems you mentioned in your OP at times), in the absence of any other info, maybe your WiFi router is constantly sending the phone packets (what's been referred to as a 'dirty router' on here before) when you're connected to WiFi & not actually using it. This scenario has been known to cause relatively high levels of drain.
So to be honest with you, based on that screenshot & the BBS log, I'm not really seeing a problem.
Now, if you want to post the same again when you actually have a problem with drain similar to what you described in your OP, happy to have a look at them. But for that ~2hrs covered by the BBS log & screenshot you posted, that's pretty much normal.
MistahBungle said:
A couple of observations. There's nothing that stands right out in the BBS log. The other one is, looking at that graph you've lost ~15% over a bit under 2 hrs. The screen has been on most of the time the phone has been awake (confirmed by the BBS log) if you look at the respective bars. You've also been using WiFi for most of the time the screen has been on/phone has been awake.
Roughly speaking, going by the screenshot, you'd get ~5hrs+/- screen on time if you kept using the phone in the same way you had during that just under 2 hrs, and this is pretty much normal. I haven't had drain issues for ages, so I double checked my details on the 2nd screen of settings/battery to make sure CM9 is reporting these details accurately (screenshot attached). Certainly in my case, this screenshot reflects what my phone had been doing for the just under 5 hrs it had been off charge/since last reboot; that is, >90% of the time in idle/deep sleep. So it probably isn't CM9 reporting these details inaccurately in your case either.
The BBS log & screenshot don't illustrate the problem you talked about in your OP. Now, if I had to take a stab in the dark at what's causing problems when you do have them (and FWIW, I do believe you're having the problems you mentioned in your OP at times), in the absence of any other info, maybe your WiFi router is constantly sending the phone packets (what's been referred to as a 'dirty router' on here before) when you're connected to WiFi & not actually using it. This scenario has been known to cause relatively high levels of drain.
So to be honest with you, based on that screenshot & the BBS log, I'm not really seeing a problem.
Now, if you want to post the same again when you actually have a problem with drain similar to what you described in your OP, happy to have a look at them. But for that ~2hrs covered by the BBS log & screenshot you posted, that's pretty much normal.
Click to expand...
Click to collapse
Okay, much appreciated so I guess I'll take it from your reply that 5 hours with wifi browsing isn't too bad. Seems okay, but I still find it a bit strange that (in my case) wifi browsing uses just as much battery as games do. I always thought it was a light activity!
Or maybe it wasn't the battery that had a problem, but that I set my expectations a bit too high. I came to this S2 from a BlackBerry 9700, whose battery would last half a week with very frequent use. But anyway, I just got this phone for a week, so I consider myself a pretty heavy user. Probably when I get familiar with it, I won't feel the need to play with it every five minutes and battery will last a bit longer then! xD
Nah. Anything with screen on is far from 'light activity'. Screen consumes far & away the most juice. In saying that, I've seen some people on here say they can get 8-9 hrs screen on with 2000mAh battery. How they do it I have absolutely no idea.
But if yeah, 5 hrs with the screen on most of the time whether browsing or playing games (games in particular are very CPU/GPU intensive & thus use a lot of zzzzs; unless they're really basic games like chess or similar), or anything else isn't too bad. Can you do better ? Obviously, if people say they can get 8-9 hrs. But it's not a matter of doing A, B & C and you'll magically end up with massive screen on times. Every phone is setup & used differently, and getting the absolute max out of every charge takes a lot of trial & error and experimenting with settings/setup.
There are tons of threads about the subject on here if you feel like going down that path. For me, I'm happy with the battery life I get these days because you can really obsess over it & spend a lot of time stressing over it/trying to maximise it for often very little gain. I'd rather simply use my phone a lot during the day & charge it at night.
Yeah Crackberries are like Japanese cars, they can run on fumes pretty much ;-) Having a dual core processor, a decent GPU & a huge screen kinda changes things.
There is one thing you can do fairly easily tho. And that's to make sure the phone spends as much time as possible in deep sleep when you're not using it. That will ensure that you have enough juice to get you by when you do want to use it. Simple ways to help achieve that is to turn off data/WiFi completely when you're not using it (tho many people don't like to do this for different reasons; which is perfectly OK if you're happy to live with the resultant drain), and make sure you've got no apps that are doing things they shouldn't be doing (like syncing, for example) while the phone should be sleeping. Again, there are lots of threads about same if you ever feel like a bit of light reading ;-)
So yeah, if you do find you experience drain that's not normal/outside the usual pattern you have, definitely post details & people can have a look for you. And as you said, you'll get to know what really is normal with regard to drain & so on is as you use the phone more (I tended to use it constantly for that first couple of weeks as well).
nyancatland said:
Okay, much appreciated so I guess I'll take it from your reply that 5 hours with wifi browsing isn't too bad. Seems okay, but I still find it a bit strange that (in my case) wifi browsing uses just as much battery as games do. I always thought it was a light activity!
Or maybe it wasn't the battery that had a problem, but that I set my expectations a bit too high. I came to this S2 from a BlackBerry 9700, whose battery would last half a week with very frequent use. But anyway, I just got this phone for a week, so I consider myself a pretty heavy user. Probably when I get familiar with it, I won't feel the need to play with it every five minutes and battery will last a bit longer then! xD
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Already took such measures. Wakelocks killed my battery over my first night with the phone, and I woke up after 7 hours to find a ~50% battery completely empty. Now things are alright, I clear CPUSpy stats before I sleep and wake up to around 95% of deep sleep time. Overnight drain varies between 5 and 10%.
And yes, yes you are right. Maybe I should stop going nuts. I'm checking BBS and CPUSpy every hour, reading every XDA thread on battery, and calculating my battery drainage every morning I wake up :laugh::laugh::laugh:
Re: dirty/'noisy' WiFi networks, have a look at this post as an example of what I was talking about above.
MistahBungle said:
Re: dirty/'noisy' WiFi networks, have a look at this post as an example of what I was talking about above.
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Umm...so I just woke up, and noticed a wakelock in the kernel category. It was PowerManagerService, and it occupied around half an hour. Overnight, aftet I've slept 10 hours (got a day off ), my battery came from 24% down to 13%. That's a rate of roughly 1% per hour. Is that normal? And also, what is that PowetManagerService wakelock?
Delivered using Nyan Cat's rainbow powers.
Fantastic. Looks like you got your 10 posts That tip is about as useful as "don't plant cauliflowers in concrete".
trojans63 said:
Turn off wifi and dont play games and your batter will last longer
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finally found a thread on this issue after posting
http://forum.xda-developers.com/showthread.php?t=1748301
sorry mods, pls delete
Me too ... it's driving me nuts.
I am experiencing this. My battery life is horrendous. Even when I barely touch the phone the battery drains extremely quickly. I have already rooted the phone with a few different roms with the battery setting "fix" to no avail. I'm on at&t. I have disabled wifi and gps. I have tried to use both the stock app killers and 3rd party ones recommended by these forums. My battery monitoring apps (both stock and 3rd party) consistently attribute the battery loss (always more than 90% of battery use) to an android system app. The android system app or file changes from day to day seemingly randomly. Files have included: UltaCfg, com.samsung.app.playreadyui and security storage.
Any help will be extremely* appreciated. I love the phone but it is nearly useless in this state.
zeesubalpha said:
I have been experiencing some serious battery drain issues. Looking at my battery stats, "Android System" is responsible for over half of the drainage. These are the only apps that run constantly besides those which the phone requires to operate:
- SetCPU
- HDWidges
- The Weather Channel
- LBE Privacy Guard
- avast! Mobile Security
other phone info is in sig. Any insight/advice??
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I am draining my battery as quickly as I can (streaming Netflix through 4G LTE with max screen brightness, max overlclock w/ performance gov) and then i'm going to power off and do a full recharge. this seemed to have fixed similar issues in this thread:
http://forum.xda-developers.com/showthread.php?t=1756776
let you know the results.
edit: suppose i should say that i was not experiencing this issue until i updated KT747 this morning.
this is what i did:
1) drain the battery completely. let the phone die.
2) charge to 100%. do not power the phone on until it is completely charged to 100%.
3) when i powered the phone on I was at 99%. i plugged it in and it went to 100% in about 2 minutes.
this seems to have completely solved my problem. the android system has gone from using 57% of the battery to 6%. it seems like the kernel i was using vastly overestimates the percentage of the battery to allocate to the android system until it "learns" the capacity of the battery
zeesubalpha said:
this is what i did:
1) drain the battery completely. let the phone die.
2) charge to 100%. do not power the phone on until it is completely charged to 100%.
3) when i powered the phone on I was at 99%. i plugged it in and it went to 100% in about 2 minutes.
this seems to have completely solved my problem. the android system has gone from using 57% of the battery to 6%. it seems like the kernel i was using vastly overestimates the percentage of the battery to allocate to the android system until it "learns" the capacity of the battery
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Click to collapse
So this worked for you? I am having excessive battery drain with my Telus S3?
colemac said:
So this worked for you? I am having excessive battery drain with my Telus S3?
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I am also a Telus user. I had big time battery drain issues even with trying everything: enabling power savings mode, running Juice Defender, using wifi more, using darker wallpaper, keeping a closer eye on syncing operations, screen brightness and some other stuff.
After about 10 days I went back to the vendor (Futureshop) and convinced them to give me an exchange on the battery. They have a 14 day return/exchange policy for cell phones if you are not completely satisfied. I took some screenshots to argue my case. Thankfully the rep said ok and further explained how much power an AMOLED screen uses. I really didn't want to convince him that I am quite informed on battery drain issus and took the new battery and ran!
Conclusion is the new battery is so much better it's like night and day. I have the capacity now that others have been raving about.
If you can exchange the battery, do it. Then get the new battery and charge it up fully first thing.
hello people, first of all know how to understand me I'm kind of new to this
My main problem is that when I leave the pocof1 to sleep when I go to sleep, I wake up every day with 30-35% less battery (I make sure there are no applications in 2 plane or open)
I think that the battery problem is not because when checking the use during the night, there is no type of jump, nor excessive consumption of any app
I had the problem with official Miui and crdroid
Any ideas? Should I try another kernel? Never change it and I know little or nothing about it
You can use Better Battery Stats (free on XDA) take logs properly and post it in it's XDA thread for analysis. Could be poorly coded apps keeping the CPU awake causing battery drain. I have experienced zero issues in crDroid over the 3+ years I have used it almost exclusively.