Develop Bugs

[Q] Blazer ROM- Battery Issues

So I rooted my phone and flashed the Blazer ROM. Everything flashed well and I am loving the look of this ROM. My only issue is that now my battery is draining very fast. It seems to be going down faster than before the flash. I tried calibrating the battery with one of the marketplace apps, but it hasn't done much. One of the main reasons for flashing was to improve the battery life. I am looking for any suggestions on what I can do? Is there any point in trying to re-flash the rom? Any help will be appreciated.
Thank you in advance!

Give it a few charging cycles for everything to settle in....also download better battery stats and check for possible wakelocks
sent from the near past

I had the same problem with this version of Blazer Rom. After my 4th charging cycle I had to get off it. I couldn't get a whole day use. For some reason battery drained hella fast. I'm back on stock rooted now. No rom has given me better battery life than when I'm on the stock one so far. I usually give the rom about 4/5 days to see any improvements. If too many bugs or battery drain I'll get off it sooner than that.

OK thanks! I guess I will try and give it another couple of days and see if it improves. If not I'll consider switching ROMs. Sorry but what is a wakelock? I'm still pretty new with all of this.

had same issue i just flashed rom three times and since then ive been getting a good 16 to 20 hours on one charge.

had the same issue, i was at work and charged my phone, one our latter my battery was down 20 percent went back to stock root.
Im also curious, what's wakelock?

AdamRabb said:
OK thanks! I guess I will try and give it another couple of days and see if it improves. If not I'll consider switching ROMs. Sorry but what is a wakelock? I'm still pretty new with all of this.
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wakelock is a term meaning an app I going rogue keeping your kernel awake. if you use bettery battery stats and cpu spy you can see what keeps waking your phone up when its supposed to be in a deep sleep. btw when charging it doesn't go into deep sleep. so it may give you a weird result if you check after a charge. also do not spend any money on battery calibration apps. every app I have come across tries to calibrate by deleting battery stats. which has been proven to do nothing. just a heads up dude.

omargs7 said:
had the same issue, i was at work and charged my phone, one our latter my battery was down 20 percent went back to stock root.
Im also curious, what's wakelock?
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Click to collapse
A kernel mechanism for Android power management. When a thread holds a wakelock, the kernel will refrain from entering a low-power state.
Basically, an app or process is not letting your phone sleep. Free app betterbatterystats can help you identify any rogue apps
Sent from my Blazing ET4G

tkemack said:
A kernel mechanism for Android power management. When a thread holds a wakelock, the kernel will refrain from entering a low-power state.
Basically, an app or process is not letting your phone sleep. Free app betterbatterystats can help you identify any rogue apps
Sent from my Blazing ET4G
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Click to collapse
Thanks for that suggestion! I shall install betterbatterystats and cpu spy and see what happens to my phone as i let it set over night. I've seen it drop by almost 20% in battery life overnight for some reason (~8hours)...which I find to be unacceptable.

Which ROM for best battery?

I'm currently using MildWild 4.3 Final and find the battery level decreases on idle far too quick. I've checked using badassbattery app and nothing untoward is shown in there. Any advice would be greatly appreciated

elrasho said:
battery level decreases on idle far too quick
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firstly, need to know what your actual decrease over a period of time, and whether you have anything syncing. and also what you're expecting or wanting it to be. this can be very subjective. what you're already achieving could be quite good. age of your battery is also important.
- assuming you're using inbuilt kernel, set min cpu to 245 ondemand
- betterbattery stats is another useful app to check partial wakelocks (bad apps keeping phone awake)
- use something like currentwidget to monitor idle battery drain if you want to. with screen off, 3g on, the minimum standby drain you can normally achieve is around 3-5mA drain.
if the above checks out, it's probably not a rom issue, may just need a new battery. switching roms may make a difference, and you can try the above on others to actually measure if there are any, rather than placebo. oxygen is supposed to be of the more efficient variety anyway

I've done all those things and I'm also using a brand new genuine HTC Desire battery. I still find that when I leave my phone alone, no Wireless or data or any app running in the background, the battery goes down by 10% every hour or so.

woah then that's way too much, definitely doesn't look like rom/sofware issue to me, sounds like hardware.
what does idle battery drain report?.
i think there are other apps which will measure the actual battery capacity. if it's official should hopefully be close 90-90% of the stated 1400mAh capacity i believe.
not sure what else to suggest which will actually solve problem this however, other than repair

Use the manu 2.1 axi cfs kernel. Only lose 2% an hour with wi fi set to turn off on screen off!
Sent from my HTC Desire using xda app-developers app

topgeardave said:
Use the manu 2.1 axi cfs kernel. Only lose 2% an hour with wi fi set to turn off on screen off!
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Click to collapse
ManU is not designed for oxygen, also loses camera drivers by doing this. 2% idle drain / hour is not that great either...50 hours standby with screen and wifi off...
@elrasho, you could try flashing a different rom or stock RUU to be absolutely sure. if you've done all the sensible things above like checking bad apps and still getting ~10% drain / hour, you can pretty safely assume it's hardware...

eddiehk6 said:
ManU is not designed for oxygen, also loses camera drivers by doing this. 2% idle drain / hour is not that great either...50 hours standby with screen and wifi off...
@elrasho, you could try flashing a different rom or stock RUU to be absolutely sure. if you've done all the sensible things above like checking bad apps and still getting ~10% drain / hour, you can pretty safely assume it's hardware...
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Click to collapse
2% an hour is so efficient! You find another ROM/Kernel which can give you the same battery drainage.
Oh and I thought he meant mw cm. For oxygen use thalmus mod 8 using smartass v2 governor
Sent from my HTC Desire using xda app-developers app

like i said:
eddiehk6 said:
firstly, need to know what your actual decrease over a period of time, and whether you have anything syncing. and also what you're expecting or wanting it to be. this can be very subjective
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Click to collapse
topgeardave said:
2% an hour is so efficient!
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Click to collapse
if that's what's good enough for you. personally, i think not. if idle (screen off, wifi/data off), i see anything above 1% / hour as bad, but that's my expectation
You find another ROM/Kernel which can give you the same battery drainage.
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Click to collapse
stock rom, before i even rooted, would last more than 50 hours standby...
For oxygen use thalmus mod 8 using smartass v2 governor
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Click to collapse
stock/inbuilt kernel with ondemand should work just fine. mod 8 is based on slightly older sources. whether smartassV2 is better depends, but i think it has to be actually measured, not 'seems to last longer'

The older kernels tend to be more power efficient ala manu kernels. I've never tried leaving my phone on standby and waiting for it to discharge. I get 14 hours out of my desire a day with mw cm 4.3 with manu 2.1 cfs kernel under moderate to heavy usage
Sent from my HTC Desire using xda app-developers app

eddiehk6 said:
ManU is not designed for oxygen, also loses camera drivers by doing this. 2% idle drain / hour is not that great either...50 hours standby with screen and wifi off...
@elrasho, you could try flashing a different rom or stock RUU to be absolutely sure. if you've done all the sensible things above like checking bad apps and still getting ~10% drain / hour, you can pretty safely assume it's hardware...
Click to expand...
Click to collapse
Which ROM do you recommend me to try eddiehk6?

CM7 + Tiamat Kernel + 100-800Mhz CPU.

Do you mean this one? http://forum.xda-developers.com/showthread.php?t=917570&highlight=cyanogenmod

elrasho said:
Do you mean this one? http://forum.xda-developers.com/showthread.php?t=917570&highlight=cyanogenmod
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Yes

topgeardave said:
I've never tried leaving my phone on standby and waiting for it to discharge
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no nor have i, all i'm saying is that if i do leave it idle doing nothing, i perceive 2% / hour drain as poor
elrasho said:
Which ROM do you recommend me to try eddiehk6?
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Click to collapse
not tried enough, though i trust bortak!
but no rom should give you 10% / hour idle drain...stock rom/RUU with nothing installed is an easy benchmark to test
i still think it's hardware by the sounds of things, but doesnt hurt to try other roms in the meantime. hope you work something out:fingers-crossed:

battery life

I recently bought a used nitro hd and unlocked it for use on t-mobile. I lose about 4% battery life per hour while in standby. bluetooth, gps, wifi are all off. cell radio is the only thing on. phonearena reports a 259 hour standby life, and at this rate I will get about 25 hours of standby time. and perish forbid I use the phone, when I can literally watch the battery percentage drop before my eyes. I lose about 1% every 2-3 minutes when using it. I have tried v20c and CM10 stable.
does this sound like a problem that can be dealt with somehow, or am I looking at a new battery? thanks.

reebokhcfr said:
I recently bought a used nitro hd and unlocked it for use on t-mobile. I lose about 4% battery life per hour while in standby. bluetooth, gps, wifi are all off. cell radio is the only thing on. phonearena reports a 259 hour standby life, and at this rate I will get about 25 hours of standby time. and perish forbid I use the phone, when I can literally watch the battery percentage drop before my eyes. I lose about 1% every 2-3 minutes when using it. I have tried v20c and CM10 stable.
does this sound like a problem that can be dealt with somehow, or am I looking at a new battery? thanks.
Click to expand...
Click to collapse
Habe you tried disabling LTE? It may be because your phone is constantly searching for an LTE signal that it's wasting so much battery.
CM10 and V20c are not particularly great with battery life. You might try CM9 if you want to see if it makes a difference.

thank drumist. I forgot to mention I also downclocked the processor to 1ghz with cm10 with not much noticeable effect. in cm10, under preferred network mode, gsm/wwcdma preferred is checked. lte is not.I also lost a full 1% just checking that.

reebokhcfr said:
thank drumist. I forgot to mention I also downclocked the processor to 1ghz with cm10 with not much noticeable effect. in cm10, under preferred network mode, gsm/wwcdma preferred is checked. lte is not.I also lost a full 1% just checking that.
Click to expand...
Click to collapse
While in that same screen you selected gsm/wcdma, if you go to Access Point Names and switch it from ATT LTE to ATT you might see some improvement. Also, HO!NO!s Full Throttle seems to be quite good on battery life. It's CM9 based and it's pretty snappy. I've got it overclocked to 1728mhz and have been playing with mine almost constantly for about 5 hours so far today and I'm at 66% left.

lordcheeto03 said:
While in that same screen you selected gsm/wcdma, if you go to Access Point Names and switch it from ATT LTE to ATT you might see some improvement. Also, HO!NO!s Full Throttle seems to be quite good on battery life. It's CM9 based and it's pretty snappy. I've got it overclocked to 1728mhz and have been playing with mine almost constantly for about 5 hours so far today and I'm at 66% left.
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Click to collapse
You went back form pA 2.5x, eh? I'm currently running 1d 6hrs with 2hrs+ screen on time and at 14% bat life on FT.
Sent from my LG-P930 using xda app-developers app

X0dus said:
You went back form pA 2.5x, eh? I'm currently running 1d 6hrs with 2hrs+ screen on time and at 14% bat life on FT.
Sent from my LG-P930 using xda app-developers app
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Click to collapse
That's why I've been playing with it so long today lol. After reading what you said the other day I had to give it another try. I do miss phablet mode though! What all have you done to it to get such ridiculous stats?
Also, I do tend to ROM hop a pretty good bit. I've tried every ROM in the Dev section except Liquid Nitro; PA just seems to be my fallback.

lordcheeto03 said:
That's why I've been playing with it so long today lol. After reading what you said the other day I had to give it another try. I do miss phablet mode though! What all have you done to it to get such ridiculous stats?
Also, I do tend to ROM hop a pretty good bit. I've tried every ROM in the Dev section except Liquid Nitro; PA just seems to be my fallback.
Click to expand...
Click to collapse
Left the OC at 1728. Left the GPU OC as is. I under volted -75 from 192mhz to 1026, then -50 up to 1512 and -25 above that. I leave sync off. Only have wifi on constantly when plugged in. I freeze Google Maps until I need it (constantly runs). Diplay-automatic backlight enabled-sample intervel 5s. Performance-memory management-allow purging of assets checked. And follow this guide for calibration: http://forum.xda-developers.com/showthread.php?t=1616598 ... I think that's about it. Oh, I also let it settle in for a few days before judging life of the battery.
EDIT: I also ROM hop often. Liquid Nitro is the only one I haven't tried, too. I love pA JB but the battery life drives me nuts (have a backup though). I'm lucky to get 8hrs out of a charge. I can't wait for thomas.raines to finish is LZ JB kernel. That's gonna improve things quite a bit.

X0dus said:
Left the OC at 1728. Left the GPU OC as is. I under volted -75 from 192mhz to 1026, then -50 up to 1512 and -25 above that. I leave sync off. Only have wifi on constantly when plugged in. I freeze Google Maps until I need it (constantly runs). Diplay-automatic backlight enabled-sample intervel 5s. Performance-memory management-allow purging of assets checked. And follow this guide for calibration: http://forum.xda-developers.com/showthread.php?t=1616598 ... I think that's about it. Oh, I also let it settle in for a few days before judging life of the battery.
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Where do you set the uv settings? I swear I've read the entire FT thread but I must have missed it.

lordcheeto03 said:
Where do you set the uv settings? I swear I've read the entire FT thread but I must have missed it.
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Click to collapse
/ect/init.d/99ocvoltcontrol
/ect/init.d/99GPUoverclock if you wanna oc the GPU more which I've done but caused overheating.

thanks for the responses. I am trying FT and it seems better, but I lost 50% of battery with the phone off between yesterday and today. 50% with it off! what the heck?

reebokhcfr said:
thanks for the responses. I am trying FT and it seems better, but I lost 50% of battery with the phone off between yesterday and today. 50% with it off! what the heck?
Click to expand...
Click to collapse
Try this: http://forum.xda-developers.com/showthread.php?t=1616598

[Q] Cyanogenmod 10 battery life on normal usage.

Hi guys,
I recently switched to CM 10 (Android 4.1.2) and the battery life is significantly lower than what I had on the stock ROM and the new Sense UI... I guess.
My phone won't run longer than 10-15 hours a day with normal usage, which means Wi-fi and 3G always on, screen on automatic brightness being used for about 1 hour in total (for one charge). However Android OS, Cell Standby and Phone Idle still account for the most battery usage, which I find weird. I have no wakelocks and my device goes to deep sleep when not used.
Is this normal behavior with the new Cyanogenmod and Jellybean or are my expectations too high? I already read most threads concerning battery life, but most of them discuss problems such as wakelocks or similar issues. My question relates to the normal behavior of CM 10.
I am grateful for all replies on the matter or personal experiences.

It's known that CM10 battery life is worse than stock JB. You can try different kernels and different governors, but it's a trade-off between life and performance.

BenPope said:
It's known that CM10 battery life is worse than stock JB. You can try different kernels and different governors, but it's a trade-off between life and performance.
Click to expand...
Click to collapse
I don't understand, I thought that CM is stripped out of unnecessary background processes and apps. As long as I'm not using any CPU or GPU intensive apps like games it should consume less battery than the stock ROM. Is there something I'm missing?

Maybe the updated kernel and drivers give better power effeciency. When the JB kernel source is released, hopefully CM10 and other AOSP ROMs will also improve.

You were saying about on screen time?
Sent from my faster than SGS3 HOX.

CM 10 really uses a lot of battery but of you could switch off wifi and 3g when not using, and clearing all the apps frequently in the recent menu may help... My battery then lasts from about the start of the day till night though the batterys now quite old.
Sent from my NexusHD2 using xda premium

i got a weird battery life yesterday, i was walking from work to home, i started watching videos on youtube, looked at the battery, 31%, after few videos looked again, still 31%, i walked 41 mins with a total of 9% of battery drain, i also played a game for about 25 mins, it was a really battery life.

BenPope said:
Maybe the updated kernel and drivers give better power effeciency. When the JB kernel source is released, hopefully CM10 and other AOSP ROMs will also improve.
Click to expand...
Click to collapse
Allright... just gonna have to play the waiting game.
XxVcVxX said:
You were saying about on screen time?
Sent from my faster than SGS3 HOX.
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Click to collapse
That... is not possible! How the hell did you achieve that?
Mansehej said:
CM 10 really uses a lot of battery but of you could switch off wifi and 3g when not using, and clearing all the apps frequently in the recent menu may help... My battery then lasts from about the start of the day till night though the batterys now quite old.
Sent from my NexusHD2 using xda premium
Click to expand...
Click to collapse
That's pretty much my battery life as well. Regarding age, I'm really concerned, as I'm not able to open the phone and just replace it. But I guess that much better smartphones will come along before I consider getting a new battery and it won't be worth it any more.
hopeless12 said:
i got a weird battery life yesterday, i was walking from work to home, i started watching videos on youtube, looked at the battery, 31%, after few videos looked again, still 31%, i walked 41 mins with a total of 9% of battery drain, i also played a game for about 25 mins, it was a really battery life.
Click to expand...
Click to collapse
I get that sometimes as well. I pick up the phone a couple of times and the battery is always at, say, 50%. Then, a couple of hours later I read a message and it suddenly jumps to 41 or lower. But from what I've read that's normal and no cause of concern.

XxVcVxX said:
You were saying about on screen time?
Sent from my faster than SGS3 HOX.
Click to expand...
Click to collapse
I heard what causes the CM10 to have such an awful battery life is something that was supposed to save power when you lock your phone [Which is normally quiet often] and actually causes it to depelt, so it obvoiusly doesn't affect screen time
CM10 is a horrible ROM, get something else... I used LiquidSmooth for a while, it's a great ROM
Now running ParanoidAndroid 2.53
Btw, Stock ROM had a wonderful battery life, I only realize that now ... lots of ROMs can't reach that much

SrebX said:
I heard what causes the CM10 to have such an awful battery life is something that was supposed to save power when you lock your phone [Which is normally quiet often] and actually causes it to depelt, so it obvoiusly doesn't affect screen time
CM10 is a horrible ROM, get something else... I used LiquidSmooth for a while, it's a great ROM
Now running ParanoidAndroid 2.53
Btw, Stock ROM had a wonderful battery life, I only realize that now ... lots of ROMs can't reach that much
Click to expand...
Click to collapse
That's exactly what I did, flashed the old RUU and installed all updates. I don't know how the guys from HTC managed to do it, but the battery life on Android 4.1.1 and Sense 4+ is AMAZING. I easily get 24 hours with normal usage, over 2 days if I'm really careful.

This is what I got during a night sleep with cm 10.
I installed it yesterday so its kinda new tot me. What causes this?
Sent from my HTC One X using xda app-developers app

Probably some nasty wakelocks. Install with wipe/factory reset if you didn't so already. Then try betterbatterystats (search xda) to find out what is causing wakelocks.

[Q] Draining 7.5% Battery per Hour on Airplane Mode

I'm reading in the forums here about people achieving 1% battery drain on their Galaxy Nexus. This seems so out of reach for me, I have no idea what's going on.
Basic Stats:
Carrier: Sprint
Android 4.1.2
ROM: AOKP
My phone has always drained at least 7% battery per hour (even before I rooted). My mother has the same phone and hers drains 2%/hour. I took my battery in to get tested and they said it was in excellent health.
Last night, I put it on airplane mode at 100% charge and woke up with it around 33%. Android's battery stats attributed 70% of the drain to "phone idle".
I've used BatteryCalibration (no effect) and disabled almost everything. Better Battery Statistics isn't showing any significant wakelocks (log attached). So, long story short, I'm baffled. Is this defective hardware? The phone is hardly usable as much more than a tethered doorstop.
Any thoughts? I really appreciate it.
Thanks,
Jeff

reflash your rom.
or better idea, change the kernel, i suggest AK

I agree battery life is improved significantly on the latest ask kernel but my self I would reflash the ROM too
Sent from my Galaxy Nexus using xda premium

kevtrysmoddin said:
I agree battery life is improved significantly on the latest ask kernel but my self I would reflash the ROM too
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
I've tried out four different ROMs (including stock) and have had the exact same drain on all of them. Is there a reason why re-flashing AOKP would fix this?

jemtman said:
I've tried out four different ROMs (including stock) and have had the exact same drain on all of them. Is there a reason why re-flashing AOKP would fix this?
Click to expand...
Click to collapse
Did you flash an AK kernel yet? A good kernel will have the greatest effect on battery
Toro | Carbon | AK SKL

jemtman said:
I'm reading in the forums here about people achieving 1% battery drain on their Galaxy Nexus. This seems so out of reach for me, I have no idea what's going on.
Basic Stats:
Carrier: Sprint
Android 4.1.2
ROM: AOKP
My phone has always drained at least 7% battery per hour (even before I rooted). My mother has the same phone and hers drains 2%/hour. I took my battery in to get tested and they said it was in excellent health.
Last night, I put it on airplane mode at 100% charge and woke up with it around 33%. Android's battery stats attributed 70% of the drain to "phone idle".
I've used BatteryCalibration (no effect) and disabled almost everything. Better Battery Statistics isn't showing any significant wakelocks (log attached). So, long story short, I'm baffled. Is this defective hardware? The phone is hardly usable as much more than a tethered doorstop.
Any thoughts? I really appreciate it.
Thanks,
Jeff
Click to expand...
Click to collapse
Try updating your radios
Sent from my Galaxy Nexus using xda app-developers app

Thanks for the suggestions all.
I wound up unrooting, re-stocking and re-locking the phone last night. Same issues. Took it in to a sprint store today and they definitely agree that I've got a hardware issue, not software/kernel.
I'm going to start getting in touch with Samsung's warranty department.