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Hi guys. I'm new to the Android modding scene and I just installed my first ROM yesterday. Now my Droid Incredible is currently running MIUI 1.9.9 with the latest Incredikernel, undervolted by about 100 units.
When the phone is in sleep, the battery is no problem. Over the course of 1.5 hours I lost 2% of battery. However, I sat down and opened up browser (on 3G Data) to read a couple of articles, and in the course of 3-4 minutes, my battery went from 77% to 72%.
I don't know if this is normal, this is the first time using a text-based battery readout instead of a graphical, so maybe I never noticed it before...but I can't help but find this to be unusual. Are there any ways to fix this? Should I undervolt more? Switch to a different kernal? Flash my radio (I'm at Stock Froyo)?
I've looked around and can't find much on the issue (1.9.9 is new, I figure that is part of it), but perhaps you guys have some ideas for fixes?
EDIT: Upon closer look, it's only happening when using 3G Data, using wifi for the same thing and my battery has stayed at 71 for 10 minutes of browsing now. Also Camera drained 3% really quickly...but that was trying to use burst mode for 20 seconds, so I'm sure that was why, but just adding it as a note.
Battery Drains like HELL!!!
amuench said:
Hi guys. I'm new to the Android modding scene and I just installed my first ROM yesterday. Now my Droid Incredible is currently running MIUI 1.9.9 with the latest Incredikernel, undervolted by about 100 units.
When the phone is in sleep, the battery is no problem. Over the course of 1.5 hours I lost 2% of battery. However, I sat down and opened up browser (on 3G Data) to read a couple of articles, and in the course of 3-4 minutes, my battery went from 77% to 72%.
I don't know if this is normal, this is the first time using a text-based battery readout instead of a graphical, so maybe I never noticed it before...but I can't help but find this to be unusual. Are there any ways to fix this? Should I undervolt more? Switch to a different kernal? Flash my radio (I'm at Stock Froyo)?
I've looked around and can't find much on the issue (1.9.9 is new, I figure that is part of it), but perhaps you guys have some ideas for fixes?
EDIT: Upon closer look, it's only happening when using 3G Data, using wifi for the same thing and my battery has stayed at 71 for 10 minutes of browsing now. Also Camera drained 3% really quickly...but that was trying to use burst mode for 20 seconds, so I'm sure that was why, but just adding it as a note.
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Click to collapse
You are doing much better. I recently flashed 1.9.9 and initially it was choppy and lagged a lot. Then someone recommended Fugumod kernel. Although, it appeared as if the lags were removed, the display became dull and yellowish. I installed Voodoo color app to fix this issue to some extent but it was of no use..
This is just the beginning... I caliberated the battery yesterday and used it until 89% before I went to sleep.. Today morning, the battery had come down to 59% for no apparent reason. I searched the 'Battery monitor' for some information about this and found none of the services/apps were used for more than 15 minutes and yet the battery had drained the hell out.. The 'display' was at 60% and its duration was the max(~4 hours) and around 4mA of current..
To make matters worse, I rebooted the phone and the charge fell from 59% to 8%... just for a REBOOT!!! and Fugumod kernel doesn't allow me to charge with the phone switched off... This is annoying too.
I am severely disappointed I've never encountered such a disaster before.. There is absolutely no evidence as to what caused this battery drain.
Is there a solution for this? .. I'm charging my phone so that I can flash back to 1.9.2 and the stock kernel..
Any sort of help would be appreciated.. Thanks
Im getting some weird battery stuff, as well as the Android OS drain. If I restart my phone, once in a while It drops like 20-30%. i'll go from 46% to like 18%. I see the threads about slow draining, but mine seems to happen instantly sometimes (3 different times so far in a week), anyone have solutions? Got it from someone on ebay, can I still/should I RMA?
Someone posted a kernel fix in the international GSII forum, so we're either waiting for that to get ported over here or wait for samsung to release a fix. I have that same bug too. What percent r u getting on the Android OS? Mine is usually in the 60's.
Yeah I saw that thread, and I saw the 2 things causing it. Waiting for that fix I guess, hopefully it solves the big battery drops as well as the small draining. Mines pretty high, 30-50% I believe, and then cell reception takes 10-20% with LOS
That's alot better than mine. Although, I don't have that LOS problem. I'm running stock atm. Are u on a custom rom?
Running Starburst 1.5, stock was better for no LOS. But I like the customization on Starburst. Hopefully by the end of this week the kernel we be ported over.
Most likely a problem with the battery level algo and not an actual battery charge drop. It's probably showing the correct value after the reboot.
Using battery spy I was using like 12%-15% per hour, not even doing anything. Saw online that formating the SD card might help, just did, and now im using .8% per hour. The hell, something was scanning the SD card or something. Much better now, hopefully itll last 10-20 hours instead of 6 hours.
edit: so it went back up again. At .8% it will last 2 days+, but since the events keep taking the CPU, its draining it. I got it down to 4-8% by taking the SD card out. At least it will last a little longer. Cant wait for the fix, this baby will last days after.
Damn that sucks. I just formatted my card too cuz I was running out of options. Keep us updated tho.
so I think media scanner is draining, I downloaded rescan media root from android market and before I was draining at 12% per hour, but when I disable it with the app, it goes down to 5-6%. Anyone else try? Maybe thats something thats draining.
Oh btw have u tried turning off wifi? It only drained 6% after being off the charger for 9 hours. I havent touched the phone during that time span tho. Android os still in the 50s btw.
Sent from my SPH-D710 using XDA App
These are my overnight stats when I was sleeping. It's usually worse when wifi is on.
manekineko said:
Most likely a problem with the battery level algo and not an actual battery charge drop. It's probably showing the correct value after the reboot.
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Click to collapse
this is almost definitely correct. battery doesn't drop 15-20% because of reboot...the reading is wrong. Battery drivers have been bad on a few of the latest android phones. Just look at when your phone stays at 99% for the first 3 hrs of use each day...what, does it just get really inefficient in the afternoon because of food coma from lunch?
toprock23 said:
Oh btw have u tried turning off wifi? It only drained 6% after being off the charger for 9 hours. I havent touched the phone during that time span tho. Android os still in the 50s btw.
Sent from my SPH-D710 using XDA App
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Click to collapse
Trying now, seems to be charging faster too. I was mainly on wifi because cell standby was really high, keep getting LOS. But maybe I wont with wifi off now, and i'll see how battery does. ill keep you updated.
Still bad. Can only wait for the patches/fixes. 8 hours doing nothing almost. Sigh.
edit: sent to the galaxy support on twitter, see how that goes.
http://twitter.com/#!/GalaxySsupport/status/124174089085652992
Hey man, I got one more tweak for u to try. I just rooted my phone w/ the latest zenomax kernel and Starburst 1.5. Download setcpu and create a profile for "screen off". Set it to 200-500mhz on demand. In theory, this should prevent 100% cpu utilization while the screen is off. I'm testing this myself atm, so I can't give u my battery stats yet.
toprock23 said:
Hey man, I got one more tweak for u to try. I just rooted my phone w/ the latest zenomax kernel and Starburst 1.5. Download setcpu and create a profile for "screen off". Set it to 200-500mhz on demand. In theory, this should prevent 100% cpu utilization while the screen is off. I'm testing this myself atm, so I can't give u my battery stats yet.
Click to expand...
Click to collapse
Think I have the v3 version and 1.5 as well. I have setcpu set to 200-400 powersave. ive tried others and same. Suspend and events/0 keeping eating at the CPU. Thanks for the suggestions though.
figured i'd chime in here. i've had days where the battery was fine and days where the battery was absolute trash. it's happened on stock, and it's happened on root. but it almost always seems to coincide with LOS. the first picture is one of several instances where i've had pretty fast drain followed up by an instant dump in charge under normal use. it's strange how after the drop, it slowly works back up then levels off and drains normally. the 2nd pic is from today. i left my phone at home on accident when i went off to work, and when i returned, i had LOS and this battery stat. you can tell where i lost signal . the last pic is from yesterday while i had the phone at work all day and light use; a nice consistent drain.
FU battery drops and FML
Ok so i read all the posts in this thread and i understand theres a issue that effects the phone from even knowing what the battery % is. i had to post these though. i was at 47% then rebooted my phone. phone boots up and yehhh! woop woop 8% now mind you if you look at the graph it shows a nice constant cerve downward but steady because i was using my phone the entire time. now after the restart/batery drop of 40% i kept using the phone constantly but its funny how it took me over a hour of screen on to go from 8% to 5% !!!!! i bet to get from 5% to 1% it will take 2 more hours for sure. you can see the graph start to flatten out like its a super battery after the 40% drop because it didnt really drop to 8% !!! normally i wouldnt care since my phone battery last just as long, it just goes down really slow from 8%-1% but at 5% it auto dims screen and wont let me use my camera for the next 2-3 hours while i knock off the remaining "4%" of battery left. fml
Get Starburst v1.6. He removed DRM processes which should lower Android OS usage and thus battery draining. Plus with the LoStKernel, I haven't had any issues with losing signal since.
Also, use Titanium backup to remove running services that you don't need. I got rid of the stock email client, digital clock, media/social hub if you don't use those. They don't take up a lot of ram, but every little bit helps.
My battery life has improved after battery calibration. I suggest you calibrate if you didn't already so your battery usage graph may be more accurate. Hope this helps.
Thanks for the tips! I was wondering how you would calibrate the battery. Is it the same as wiping battery stats from CWM?
Yeah, that's another thread about battery drain overnight. With some screenshots.
ROM is AOKP b23, kernel s Trinity (tuna).
Sometimes it's about 20%, sometimes only 10. And rebooting phone (maybe with wiping battery stats) just before the night is helpful - then I get about 4-6% drain in 8 hours sleep time. And the phone isn't awake at that time (as you may see on graph), it's deep sleeping.
As BetterBatteryStats and SystemPanel tell me, it's system processes that use much of the battery at that time - few 'kworker' ones. I've searched the forums for some time, but still can't find a good explanation why they drain so much, nor why rebooting helps.
1) change kernel - yeah, I know, I can try that, but with stock kernel I've had the same problem - so I try to find the root of it, not just slap a few different kernels and see which one works better.
2) reboot every time before sleep - well... that's just isn't very convenient and weak way to deal with the problem.
See attached screenshots for further info.
So, any clues about what I can do to improve the situation?
Link
Link
Other than that, I couldn't find any relevant answers... perhaps a runaway system process... I'd recommend switching kernels, as this issue is known and yet unresolved. Seriously though, battery stats reports it using 56s, so is it really a major problem that is causing battery drain?
anton2009 said:
Link
Link
Other than that, I couldn't find any relevant answers... perhaps a runaway system process... I'd recommend switching kernels, as this issue is known and yet unresolved. Seriously though, battery stats reports it using 56s, so is it really a major problem that is causing battery drain?
Click to expand...
Click to collapse
I'd check that out, thanks! Yeah I know that it's a known problem, but still can't find any good solution for it...
Well it's the process that uses MOST of the system time during that period, so I guess it's enough to cause a drain. And also, there're multiple kworker processes - each may use a bit, but together they get enough for 10% overnight drain.
Which kernel would you recommend to try next? Franco? Seems pretty popular.
Edit: Seen both of these posts, no good solutions anyway. Will try another kernel, then!
I've had great results with Faux123 and I'm just now experimenting with LeanKernel, which is working well so far (wakelocks nonexistent).
I get the kworkers appearing in system panel too, but it doesnt actually effect my battery life. I lose 4% overnight but they show up in system panel.
Also their percentages never add up correctly. For example system panel shows maybe 1.3% cpu usage in total. But when i click thru to the system processes list, the sum of all kworkers exceed 1.3% by a good amount. So i always just ignore them.
Hmm... So maybe they aren't the root of the problem.
Anything else? Maybe battery need to be calibrated, like charging to 100, wiping stats, then discharging to 0 and again charge to 100?
What's really weird is that excessive drain occurs only with extended no-reboot period. Ie, If I reboot just before night drain will be 4-5%...
Check this out. Normally I get about 10% drain overnight, look at what happened last night..
Completely annihilated the battery, everything turned off.
Anyone have an explanation?
Sent from my Galaxy Nexus using Tapatalk
---------- Post added at 04:05 PM ---------- Previous post was at 04:03 PM ----------
The only thing I can think is that something I was doing when I used the phone before bed, kept some sort of process alive all night.
tixed said:
Yeah, that's another thread about battery drain overnight. With some screenshots.
ROM is AOKP b23, kernel s Trinity (tuna).
Sometimes it's about 20%, sometimes only 10. And rebooting phone (maybe with wiping battery stats) just before the night is helpful - then I get about 4-6% drain in 8 hours sleep time. And the phone isn't awake at that time (as you may see on graph), it's deep sleeping.
As BetterBatteryStats and SystemPanel tell me, it's system processes that use much of the battery at that time - few 'kworker' ones. I've searched the forums for some time, but still can't find a good explanation why they drain so much, nor why rebooting helps.
1) change kernel - yeah, I know, I can try that, but with stock kernel I've had the same problem - so I try to find the root of it, not just slap a few different kernels and see which one works better.
2) reboot every time before sleep - well... that's just isn't very convenient and weak way to deal with the problem.
See attached screenshots for further info.
So, any clues about what I can do to improve the situation?
Click to expand...
Click to collapse
Try using the kernel in my signature. this is a proof of what it gave me.
slimldj said:
Try using the kernel in my signature. this is a proof of what it gave me.
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Click to collapse
Great one! Less than 10% drain overnight, 30% per day with moderate-light usage
tixed said:
Great one! Less than 10% drain overnight, 30% per day with moderate-light usage
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Click to collapse
Awesome. Glad it worked.
Sent from my Galaxy Nexus using xda premium
tixed said:
Yeah, that's another thread about battery drain overnight. With some screenshots.
ROM is AOKP b23, kernel s Trinity (tuna).
Sometimes it's about 20%, sometimes only 10. And rebooting phone (maybe with wiping battery stats) just before the night is helpful - then I get about 4-6% drain in 8 hours sleep time. And the phone isn't awake at that time (as you may see on graph), it's deep sleeping.
As BetterBatteryStats and SystemPanel tell me, it's system processes that use much of the battery at that time - few 'kworker' ones. I've searched the forums for some time, but still can't find a good explanation why they drain so much, nor why rebooting helps.
1) change kernel - yeah, I know, I can try that, but with stock kernel I've had the same problem - so I try to find the root of it, not just slap a few different kernels and see which one works better.
2) reboot every time before sleep - well... that's just isn't very convenient and weak way to deal with the problem.
See attached screenshots for further info.
So, any clues about what I can do to improve the situation?
Click to expand...
Click to collapse
Sounds like you may be worrying about battery life too much. If this is worrying alot you may want to get an iphone. The 1750 mah battery is only rated at 10 hours. Lower your expectations about drainage per hour. The phone is constantly pinging cell phone towers to find the best signal possible even in deep sleep. That is the bulk of your drainage.
das7982 said:
Sounds like you may be worrying about battery life too much. If this is worrying alot you may want to get an iphone. The 1750 mah battery is only rated at 10 hours. Lower your expectations about drainage per hour. The phone is constantly pinging cell phone towers to find the best signal possible even in deep sleep. That is the bulk of your drainage.
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Click to collapse
No thanks, iOS is too restricted for me, and I like Google hardware better (I mean revised by Google, not manufactured ofc)
Yeah, I know, but that's 10 hours of USAGE. And I was getting much differentiated results in the same conditions (like <10% one night, >30% other) - that's what was worrying me.
I don't expect it to last whole week or anything, but 30% of power lost in one night when it's just on the shelf doing nothing (not even connected to wifi) - that's absurd. About 5-10% is ok, I guess. That's what I was getting with my Transformer, anyway - less than 1% per hour in sleep mode with wifi off.
Exact same problem. I'm on imoseyon's kernel. If I reboot I lose about5% over night. If not, about 30+. Some app is waking some system process up that is chugging away with the CPU. If I lay it on my bed our some other insulating surface, it is warm. Yes, my phone is entering sleep mode, no app doing wake locks, just kworker going nuts.
I am using samsung galaxy s2 and i am getting the kworker battery bug too. about 15% overnight which sucks.
derycklong said:
I am using samsung galaxy s2 and i am getting the kworker battery bug too. about 15% overnight which sucks.
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Same happening here, but only after flashing the latest CM radio. I guess it might have something to do with that.
link i know it will help you,and let system go into sleep
hi guys, i visit the links posted but i'm still problems with that. Using watchdog app i notice that al least once a day it show me warning message about high use of cpu. In my case the process is kworker/u8: (here there's a number from 0 to 6)
My question is: what specific process causing that? There's a way to know it? I ask it because i don't think is battery releted, cause battery is very good, excluding for the monitor usage which is what consumes more...
I know that this is a really old topic but seeing that there's still at least one fresh enquiriy i thought i'd chime in...what in effect may indeed help you is wiping the cache (it did help me on several kworker/u occassions in the past). To do so you have to access the respective menu by booting your tablet while pressing the up volume rocker and the power button simultaneously. Hope this helps
I installed CM9 FXP 127 yesterday on my Arc and the battery lasted about 8h only after being fully charged.
All this being in lock screen, no extra apps on except what is running after flashing the ROM, no toggles on to drain battery.
Anyone else got this problem? Got any fixes for it?
EDIT: 1 day before flashing CM9 rom, running the latest official ICS update I listened to music 7h straight on the phone with headset on while fishing and battery did not drain completely...still had enough battery to last me overnight when I got home and the second day (all this in idle). That's why I believe it's a CM9 issue
It may be initial syncing and stuffs. I tend to find my battery doesn't last the usual amount after flashing a new rom, but it's fine after a few days.
Thanks for answering. I will give it a few days to see how it holds up. At the moment I don't get more than 8-9h while in idle mode out of the battery.
Besides this issue there's no performance or any other kind of problems with the rom, at least for me (disregarding the posted known bugs ofc)
CraiulLup said:
Thanks for answering. I will give it a few days to see how it holds up. At the moment I don't get more than 8-9h while in idle mode out of the battery.
Besides this issue there's no performance or any other kind of problems with the rom, at least for me (disregarding the posted known bugs ofc)
Click to expand...
Click to collapse
try jj'hybrid rom ithas the feel of cm9 however, it is highly battery efficient. in idle mode, it just discharges about 0.5% per hour (measured using batterydrain from market)
When flashing a new ROM have the battery level to atleast 70 - 100% battery status
Sent from my LT18i using xda app-developers app
Hi! I'm using a gt-I9195 with stock 4.2.2 and arco's kernel. I've got this problem: after I get the battery popup warning, this wakelock pops up and keeps clock frequency at 810 mhz the whole time while idle. The battery drops so fast that after a few minutes the phone already shuts down itself. Sometimes I get the first popup warning (at 15%) and no wakelock, but usually after the second popup (5%) the wakelock appears.
I'd like to use even the last 5-15% of charge. This way, I absolutely have to charge the phone before 15% to be sure that battery won't start to drop like crazy.
I found nothing about this wakelock. What the hell is that??
After some days, I can say that it doesn't pop up always at the same time. Sometimes at 15%, sometimes at 7%, sometimes at 3% etc. And sometimes not at all.
However, EVERY TIME it appears, battery starts to drain like CRAZY. It is not a "regular" wakelock. In 2-5 minutes, battery is died. I keep reaching this low battery levels just for testing purposes... I really don't understand this wakelock.
marchrius said:
After some days, I can say that it doesn't pop up always at the same time. Sometimes at 15%, sometimes at 7%, sometimes at 3% etc. And sometimes not at all.
However, EVERY TIME it appears, battery starts to drain like CRAZY. It is not a "regular" wakelock. In 2-5 minutes, battery is died. I keep reaching this low battery levels just for testing purposes... I really don't understand this wakelock.
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Click to collapse
Not that this will help you any, but seeing as no-one else has responded, just thought I'd let you know you're not alone, and also it's not a problem specific to Arco's kernel - I seem to get the same thing on a completely unmodified S4 Mini.
It suffers from the 'battery drain while idle' bug anyway, for which I'm planning to install Arco's kernel soon, but somewhere between 15% and 5% remaining each time the drain really goes nuts. I can't see the CPU speed, but I've an app installed to monitor and log battery drain in % per hour, and it's usually around 3-4%. After the low battery warning, it jumps to 70-80% an hour, and like yours my phone can go from low battery warning to dead within a few minutes, just sitting idle.
Victoria75001 said:
Not that this will help you any, but seeing as no-one else has responded, just thought I'd let you know you're not alone, and also it's not a problem specific to Arco's kernel - I seem to get the same thing on a completely unmodified S4 Mini.
It suffers from the 'battery drain while idle' bug anyway, for which I'm planning to install Arco's kernel soon, but somewhere between 15% and 5% remaining each time the drain really goes nuts. I can't see the CPU speed, but I've an app installed to monitor and log battery drain in % per hour, and it's usually around 3-4%. After the low battery warning, it jumps to 70-80% an hour, and like yours my phone can go from low battery warning to dead within a few minutes, just sitting idle.
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Click to collapse
Glad I'm not alone. I assume you're on Jelly bean as well since you're talking about Arco's kernel whch is for JB firmwares as far as I know.
Maybe on KK this weird drain has been patched, some reports from KK stock firmware users would be interesting.
marchrius said:
Glad I'm not alone. I assume you're on Jelly bean as well since you're talking about Arco's kernel whch is for JB firmwares as far as I know.
Maybe on KK this weird drain has been patched, some reports from KK stock firmware users would be interesting.
Click to expand...
Click to collapse
Yes, on JB - I thought it might be a battery calibration issue until I saw your post about the CPU (and until trying to calibrate the battery didn't do any good).
Would be nice if KK fixed it, although it'd probably be by chance - since I can't find any mention of the bug online except in your original post, it doesn't look like it's affecting many people, so doubt if Samsung are even aware of it. Still, fingers crossed!
Yeah, searching pm8921_bms_low gives very little results. For what I understand, usually this is a wakelock of 1 second or less that pops up when there's the battery low warning.
marchrius said:
Yeah, searching pm8921_bms_low gives very little results. For what I understand, usually this is a wakelock of 1 second or less that pops up when there's the battery low warning.
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Click to collapse
Hi again! Just wondering if you have any battery saving apps installed? I had one called Battery Doctor installed, and removed it after installing Arco's kernel as I no longer needed it - since then I've let the battery run down to 2-3% on several occasions without seeing any sudden drain. Previously it always seemed to happen me at 5%, and often before that. It might be worth removing any battery related apps just as a test.
Victoria75001 said:
Hi again! Just wondering if you have any battery saving apps installed? I had one called Battery Doctor installed, and removed it after installing Arco's kernel as I no longer needed it - since then I've let the battery run down to 2-3% on several occasions without seeing any sudden drain. Previously it always seemed to happen me at 5%, and often before that. It might be worth removing any battery related apps just as a test.
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Click to collapse
It might be just luck... otherwise I don't know what to think It happened to me as well to reach 2 or 3% with no battery drain at all, but never regularly.
I don't have battery saving apps (last one I've used was green power two years ago), only greenify but shouldn't make a difference. I read from another forum that plenty of people have this issue, a guy sent his phone to samsung for this specific problem and wrote that he will inform us if they'll solve the problem (honestly, I hope it can be solved by swapping the battery or updating the firmware ).
marchrius said:
It might be just luck... otherwise I don't know what to think It happened to me as well to reach 2 or 3% with no battery drain at all, but never regularly.
I don't have battery saving apps (last one I've used was green power two years ago), only greenify but shouldn't make a difference. I read from another forum that plenty of people have this issue, a guy sent his phone to samsung for this specific problem and wrote that he will inform us if they'll solve the problem (honestly, I hope it can be solved by swapping the battery or updating the firmware ).
Click to expand...
Click to collapse
That is strange - I was getting it literally every time at 5% if not before, and I still haven't had the issue once since I last posted, I've kept letting the battery get down to 2-3% each time just to test. Oh well, I'll enjoy it while it lasts! Will let you know if the problem reappears, and will be interesting to hear if this other guy gets a solution from Samsung.
I tried to let discharge it again and the drain appeared somewhere between 7 and 6%. I definitely have the issue but I've learned simply to plug it at 20% or more, it is better for the battery too.