Develop Bugs

[Q] Seriously? Cyanogen ROM kills battery like this?

I have done a bunch of reading since my first flash to Cyanogen's 6.1 but not finding really satisfactory answers.
With the old rooted stock deodexed...I was getting about 14-15hrs of moderate-high use. So basically I pulled the cord at around 7am and plugged back in around 6pm with about 40%.
Was fine.
Flashed 6.1 last night and now I am two hours off charge and sitting at 58%!! I have all syncs turned off and I have no wifi/gps/4g running. The ONLY widget at the moment is weather and it only updates when I hit refresh.
My search has shown something called battery calibration...but that doesn't make sense to me. I have done the long charge, power off charge, power on charge etc... But since I have a wall battery charger I have just moved away from that and occasionally swap out my batteries for a full charge in that thing.
Does that 6.1 REALLY need another voodoo approach to battery life? Also the threads I have found seem to be for the nexus one or the HTC Magic(?).
Anyone else suffering HORRIBLE battery life after flashing 6.1?
Anyone got a link to a fix for the EVO and maybe something that I can get through the day with (do not have my charger at work)?

When I flashed CM7 to my wife's phone the battery was horrible (Less than 2 hours). I recalibrated the battery and the next charge lasted 2 days. Give this a try:
Battery recalibration
If you're experiencing higher than normal battery drain, try the following:
Charge the device to full battery; let it keep charging until the battery says it is fully charged. Do not just wait until the light is green, it isn't always fully charged, causing a lot of inaccuracies. (You can check by going to: Settings -> About device -> Status -> Battery Level = Full.)
Boot to recovery mode and delete the battery stats
NOTE: To have the most accurate of battery stats, reboot the device immediately after wiping the battery stats and wait for CyanogenMod to boot completely to the desktop. Once your entire boot is done and you have full access to the device, go ahead and pull the charger and continue with this troubleshooter.
Do not charge the device until after draining the battery completely, resulting in it automatically shutting off.
Recharge the device completely and then use as you normally would.
Also, CM6.1 or CM7 should get decent battery life. If it still doesn't try flashing a different kernal. I found that savaged zen bfs sbc kernal extended my life considerably.

sablesurfer said:
I have done a bunch of reading since my first flash to Cyanogen's 6.1 but not finding really satisfactory answers.
With the old rooted stock deodexed...I was getting about 14-15hrs of moderate-high use. So basically I pulled the cord at around 7am and plugged back in around 6pm with about 40%.
Was fine.
Flashed 6.1 last night and now I am two hours off charge and sitting at 58%!! I have all syncs turned off and I have no wifi/gps/4g running. The ONLY widget at the moment is weather and it only updates when I hit refresh.
My search has shown something called battery calibration...but that doesn't make sense to me. I have done the long charge, power off charge, power on charge etc... But since I have a wall battery charger I have just moved away from that and occasionally swap out my batteries for a full charge in that thing.
Does that 6.1 REALLY need another voodoo approach to battery life? Also the threads I have found seem to be for the nexus one or the HTC Magic(?).
Anyone else suffering HORRIBLE battery life after flashing 6.1?
Anyone got a link to a fix for the EVO and maybe something that I can get through the day with (do not have my charger at work)?
Click to expand...
Click to collapse
Thats a old cm, cm is now cm 7... maybe try that one..
Sent from my PC36100 using XDA Premium App

Yea Cm6 is dated. But that shouldn't matter.. I actually had fantactic battery when I was on cm6, much better than what I get on cm7.
First, check spare parts for wakelocks and make sure you don't have any. After that, follow Fazulkas advice to reset battery stats, follow it correctly tho. I never thought wiping stats would make a difference, but it surely does.

Ok, I'll try that process when I get home tonight. (Guess I can survive w/o a phone for a few hours?!?! :^O) Haven't set up more than just the google account on this ROM as I wanted to test it first. So maybe tomorrow it will win me over.

DATED?!?! LOL! It was only just a final release a few months back...;^) It has all the important stuff working where as 7 doesn't and it is still a RC.
:^P
(Have you seen my sig? Old dogs only try the proven tricks thank you very much. :^)

CM6 is not dated. In fact CM 6.1.3 is the most current stable-release version of CM available!
Sent from my PC36100 using XDA App

Its not the ROM. Anytime you flash a ROM, you need to calibrate your battery. By calibrate it isn't the plug in over and over method.
You charge to 100%, discharge it fully. Charge back to 100% then wipe battery stats in recovery. Then use your phone.

Flashed 6.1 last night
Click to expand...
Click to collapse
There is your problem. Anytime you flash a new rom, you need to give it at least a day or two to fully calibrate everything in the rom.

sekigah84 said:
Its not the ROM. Anytime you flash a ROM, you need to calibrate your battery. By calibrate it isn't the plug in over and over method.
You charge to 100%, discharge it fully. Charge back to 100% then wipe battery stats in recovery. Then use your phone.
Click to expand...
Click to collapse
HUH...this is my fourth ROM flash, first one away from stock rooted and I have never had this issue. Maybe the stock ROMs do not have this issue?

Virtuous Unity rom battery issues.

I am having piss poor battery life. I went to sleep with 93% battery life, and when I woke up about 8 hours later it was all the way down to 43%. Something isn't right. Any tweaks I can make. My friend rooted my phone, and I am quite the newbie with this stuff, so please try and be as specific as you can. Appreciate it.

It isn't the ROM. You either have a rogue app running or a bad battery. Most of the time its a rogue app. To verify you can check your battery use and see what's taking the most, or wipe the ROM clean. Not install anything, and see how it fares.

Dalamar1320 said:
It isn't the ROM. You either have a rogue app running or a bad battery. Most of the time its a rogue app. To verify you can check your battery use and see what's taking the most, or wipe the ROM clean. Not install anything, and see how it fares.
Click to expand...
Click to collapse
Well, I am pretty sure it isn't a bad battery because on stock GB my battery life was fantastic. Something is definitely wrong.
Under battery use I see:
Wi-Fi 29%
Display 22%
Cell standby 22%
Phone idle 20%
Android OS 5%
Android System 2%
Anyone?

I was having battery issues on virtuous as well even with the recommended radio and a completely bone stock install, with the cpu set to max at 1ghz. I did this: http://forum.xda-developers.com/showpost.php?p=16251182&postcount=154 last night and battery seems much much better today.

[Q] Weird HTC Wildfire Battery Meter Issue

ROM : Cyanogenmod 7.1.0.1 Android 2.3.7 <<< Doubt this is important
Kernel: 2.6.35.14-nFinity [email protected] #1 <<< Might be important
S-ON
Okay so my Battery meter is definitely acting up. After charging the battery overnight it only charges to about 89%, maybe 91% if I'm lucky.
If I unplug and immediately reboot the device the battery meter says 98% or 97% at startup. Right now I have a reboot scheduler app that restarts my phone every morning at 4AM so that it's accurate-ish in the morning.
But that's not the only issue...
When I use my phone during the day, maybe making a call or two, on a 2G network to save battery, no Wifi or Bluetooth use and phone not overclocked, my battery drains incredibly fast. It goes down 15%-20% per hour! By about 3PM the phone says 15% left and then slowly drains down to 3% battery life. This is when it gets real weird... The battery level stays on 3% for about 6-8 hours, then finally goes to 2,1 and then dies. I got 3.5-4 hours on 3% with max overclock (768mhz on performance setting), maximum brightness, screen doesn't turn off, playing music while on HSDPA network, bluetooth on... So the battery doesn't seem to be the problem, only the battery reading that is displayed.
I tried going back to the default software that came with the phone, Android 2.1 with Sense and original kernel. The battery drain was a little slower but same effect, staying forever on 3%.
Can someone please explain to me why the phone does this? It's not a trainsmash, at least the phone isn't really draining as fast as it looks, but I effectively have no idea how much time the battery has left, which isn't ideal. It still lasts me the day and I charge it every night but I'd like to have this solved, it wasn't always like this. The phone is now 10 months old.
Any help at all will be greatly appreciated.

Defective "chipset"? (This i what HTC says, not me)
http://forum.xda-developers.com/showthread.php?t=1236844
http://forum.xda-developers.com/showthread.php?t=1252687
http://forum.xda-developers.com/showthread.php?t=1280396

I sent in my Wildfire for repair. Got it back and it's not the chipset.
Its something to do with clockwork or Cyanogen.
The battery was fine until I re-flashed them.
Now it's back to the same ****ty battery life before I sent it.
Soon as I get home. I am going to flash a new rom. Possibly an older clockwork and flash a new radio.
Will post results.

BarclayTech said:
I sent in my Wildfire for repair. Got it back and it's not the chipset.
Its something to do with clockwork or Cyanogen.
The battery was fine until I re-flashed them.
Now it's back to the same ****ty battery life before I sent it.
Soon as I get home. I am going to flash a new rom. Possibly an older clockwork and flash a new radio.
Will post results.
Click to expand...
Click to collapse
If you notice the first thread, people who have never rooted/modded are also experiencing this. But, in either case, do post your results.

3xeno said:
If you notice the first thread, people who have never rooted/modded are also experiencing this. But, in either case, do post your results.
Click to expand...
Click to collapse
True, but in my case I know the problem to an extent.
I remember now that the battery starting acting up after updating to newest Clockwork recovery.
So I will flash that first. Run tests.
Flash Radio. Run tests.
Flash Rom (non-cyanogen). Run tests.
I shall do tests 1 day at a time maybe if tests prove a posotive results then I will do 2 on the same day.

Don't forget to re-calibrate the battery before your tests. It's a major cause of battery drain on Custom ROMs.

Ah, yes. Almost forgot :3

Battery drains so fast

My battery seems to drain very fast.
The phone is brand new, and I'm not able of getting more than 12 hours with one charge.
I'm using lowest brightness possible, wifi ON only when needed, 3G on only when needed (The rest of the time it stands connected by EDGE, updating whatsapp and checking emails and twitts each 15 minutes), bluetooth off, gps off and autosync off.
When I'm sleeping it dischargues 3% per hour!
I have installeed juice defender, battery calibrator and battery graph.
Is this normal?
Any help?
Battery reaches 100% at 4,2V

Which Rom, kernel, etc do you use?
Sent from my HTC Desire using XDA

Thats not normal.
Maybe you should look for some apps installed, which dont let your phone fall into deep sleep....

Jeezer said:
Thats not normal.
Maybe you should look for some apps installed, which dont let your phone fall into deep sleep....
Click to expand...
Click to collapse
I had an app once called android assistance r something like that and it killed my battery. I went to bed and battery was at 94% and when i woke it was at 2%. Unistalled straight away lol. And like matdroid says, what rom u using coz sense roms aint battery friendly.
Sent from my HTC Desire

I have been testing with differents roms.
That test was done using stock 2.2 rom . Could it make that big difference?
Have installed leedroid, oxygen, sandvold 0.8 and CM7 RC2.. But haven't had time to test them properly. I hope the reason of this battery drain is the ROM .
The only program (I think) is running all the time is Whatsapp. And it works fine with EDGE. Twitter and emails are set to update each 15minutes thanks to JuiceDefender.

I`d recommend to try with a different battery, see if there is any difference.

U could also look into trying a different kernel, most roms these day come with a choice of a few kernels.
Sent from my HTC Desire

Here is the status of my battery.
Let me know if it's ok.
This was using Oxygen COS GB (17-04-2012 built)
It's in spanish (Pantalla) is screen and voz is voice.

Are you happy with that drain?

Obviusly I'm not happy. But what can I do? I have tried almost everything.
Please help.

Please post the time the display was on plus your brightness-setting.

Dear friends,
Here are the stats again,
This time it lasted more time because it included the time when I was sleeping.
See attached pictures.
The battery still drains fast.
Best regards.

I have also the same problem. Today it lasted for 8h.
I bought a new battery 2 weeks ago, so it can't be that. I've cleared battery stats with 4EXT Recovery and done also clean wipe when changed the rom to RSK 7.4.3.
Before that I had RevolutioN 4.0, but when i updated from 3.0 to 4.0, the battery problem started. I don't if it's just a coincidence. 3.0 worked perfectly, and it's a shame, that i haven't got this work ever since =7 "If it works, don't fix it"
On RSK, what i have now, i use snq kernel (installed the kernel on RSK installation).
//EDIT:
Oh yeah, and also done all the tweaking with Deamon Controller, like on the instructions what RSK wrote on first page.

My phone lasts 12 hour when I don't use massive data.
I tried different kernels and finally found that the ManU is the most battery friendly for me.
I don't use any optimization app, which I find quite useless, I just use two profiles in setcpu:
screen on: 1152 Mhz, governor performance
screen off: 422 Mhz, governor powersave
I prefer a more responsive phone than a longer battery life.

MatDrOiD said:
Please post the time the display was on plus your brightness-setting.
Click to expand...
Click to collapse
+1
Looks like your display is on all the time.

peikojose said:
Dear friends,
Here are the stats again,
This time it lasted more time because it included the time when I was sleeping.
See attached pictures.
The battery still drains fast.
Best regards.
Click to expand...
Click to collapse
First, try to turn of data connection when you're not using it.
Then try to do this:
-use your phone until you drain the battery
-turn of the phone and connect it to charger and leave it to charge 10-12 hours
-disconnect the charger, turn on the phone and use it until the battery falls down for a few percents
-turn it off again, reconnect to charger and leave it to charge for about an hour
-disconnect, boot into recovery and wipe battery stats
-turn the phone one and use it, you should notice the difference.
Sent from my HTC Desire using XDA

nlooooo said:
First, try to turn of data connection when you're not using it.
Then try to do this:
-use your phone until you drain the battery
-turn of the phone and connect it to charger and leave it to charge 10-12 hours
-disconnect the charger, turn on the phone and use it until the battery falls down for a few percents
-turn it off again, reconnect to charger and leave it to charge for about an hour
-disconnect, boot into recovery and wipe battery stats
-turn the phone one and use it, you should notice the difference.
Sent from my HTC Desire using XDA
Click to expand...
Click to collapse
Think again about the bolded part.

erklat said:
Think again about the bolded part.
Click to expand...
Click to collapse
I red that thread before and I know what you wanna say, but my point was first part with charging, not deleting battery stats. It just has some connection with the structure of Li-ion batteries. It is also recommended to completely discharge the battery and recharge it with the phone turned off once a month.

Thanks for your answers.
Screen is on a lot of time (in the screenshots I posted you can see).
But I use lowest brightness possible, between 10 and 20% when I'm indoors and only high values when the sun hits the screen.
pieru, can you post the ManU kernel link?
I don't know what kernel i'm using, i installed Oxyged cosed (I think last version) fropm roalex. How can I know?
Thanks nlooooo.

peikojose said:
How can I know?
Click to expand...
Click to collapse
Settings>about phone>software information.
I'm fairly certain it uses thalamus kernel tho. Oxygen doesn't work with any other afaik.
Sent from my HTC Desire using Tapatalk 2

VERY HIGH Batterydrain on CM7.2

Hi,
like the titel said, i experience huge batterydrain on CM7.2 RC2/133.
I am using the stock CM7 kernel that comes with the rom. I reflashed it several times but not much changed!
At first my device didn't go into deep sleep, but since the last reflash it does.
Over night i loose ~10% ... flightmode is activated.
After 1,5 day's the battery is empty... even if i dont use the phone. Wifi/3G/bluetooth etc. are allways OFF.
I also untervolted the device but nothing changed.
I am charging my battery at the moment, so i can't post any betterbatterystats log's. But i will in some hours!!
Basically my question is, which kernel do you use? What kernel can i use on CM7.2? Are there any better ROM's when it comes to batterylife/performace?
PS: i never flashed baseband or wifi modules etc. when i installed CM7.2... just did as it said in the "how to install CM7.2".

Try this.
1. Empty your battery.
2. Charge your battery for 6 - 8 hours.
3. After that remove battery stats.
I tried this as I'm having battery drain on NXT ROM. Before that my battery can only stand for one day then need to recharge. After doing this, my battery still have 50% after a day of usage.

Just saying, it has been confirmed that removing the battery stats does absolutely nothing.

so should i try another kernel? Which fits for CM7.2 best?

ridder215215 said:
Just saying, it has been confirmed that removing the battery stats does absolutely nothing.
Click to expand...
Click to collapse
My friend taught me this lol. He even showed me a YouTube video.
Somehow it worked.
Sent from my awesome Xperia Play

You really should upgrade to CM9 unless there is a reason you're holding back.