BATTERY DRAINS ENERGY FAST

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What steps will reproduce the problem?
1.Energy draining
2.My phone said that the "Android OS" needs the most energy

What is the expected output? What do you see instead?

Longer Battery life

What version of the product are you using?
1. the right 0317 thing
2.  system-gb-20110514a-snapshot.zip    
3.  boot-gb234-110509-rndis-236mb.zip   
4. update-gb-camera-110521.zip 

On what operating system?

Do you have logcat or dmesg ?
 (adb logcat -d > logcat.txt, adb shell dmesg > dmesg.txt)

What version of the *Official LG* Firmware were before using Custom
firmware ?
(V20G, V20D, V15x, V16x etc. )
V10E

Please provide any additional information below.

Original issue reported on code.google.com by Katzen...@gmail.com on 22 May 2011 at 5:33

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Its enabled as standart for all packets on my side.

Original comment by Katzen...@gmail.com on 19 Jun 2011 at 10:21

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iwconfig wlan0 had a not so nice outcome for me...
Kernel Panic!

Original comment by migaxmoi...@gmail.com on 20 Jun 2011 at 1:01

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You need to su first.
Nevertheless it doesnt seem to help much.I had a battery drain of 40% overnight 
:-/

Original comment by jsea...@gmail.com on 20 Jun 2011 at 1:13

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even though... It's not nice to know that I can crash the kernel without root 
powers...

Original comment by migaxmoi...@gmail.com on 20 Jun 2011 at 1:52

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I just saw issue 149.
Seems to be working for me

Original comment by jsea...@gmail.com on 21 Jun 2011 at 3:59

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I have still batterydrain even if wlan is offline.

Original comment by Katzen...@gmail.com on 21 Jun 2011 at 4:54

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I can tell with a good amount of confidence that the solution posted in issue 
149 solves my battery drain while using wireless.
Setting 18/16 or 14 seems to be enough (i use 14dbm [25mW] and activated power 
management)

So a temporary fix is:
open terminal
su
iwconfig wlan0 txpower 14db
iwconfig wlan0 power on (don't know if this really works but as I stated before 
it might help)

You have to do this everytime wireless is turned on/off

Original comment by jsea...@gmail.com on 21 Jun 2011 at 4:55

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then my wlan would suck because of connection lost if i gave it less power.
the fritz!box 7170 has a bad wlan.

Original comment by Katzen...@gmail.com on 21 Jun 2011 at 7:55

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20dbm is the legal max output power (100mW).
15 dbm (32mW) is the usual output power of a laptop.
If you have a problem with your connection then you should fix it because the 
way the output power is working on this phone with openeve is not right

Original comment by jsea...@gmail.com on 21 Jun 2011 at 10:56

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hi, 

I found this ROM in 
http://forum.android-dev.it/cyanogenmod-gingerbread-2-3-4-t3274.html this link.

This is based on Openeve Kernel , but many things modified by the developer.

Surprisingly, it has a very good battery backup. 

Pls try the same.

Original comment by yakaaith...@gmail.com on 22 Jun 2011 at 3:44

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Is everything else working?
MMS/SMS/GPS/etc?

Thanks

Original comment by jsea...@gmail.com on 22 Jun 2011 at 4:08

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so can we make a summary:

1. sensors are not switched off in background
2. powermanagement in wifi is disabled
3. txpower of wifi is set too high

i.e. ineffective power consumption

Original comment by fits...@googlemail.com on 22 Jun 2011 at 4:31

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Yes the rest other things are working fine for me. I havent tested the MMS 
alone. Hope is should be fine. 

Original comment by yakaaith...@gmail.com on 22 Jun 2011 at 5:28

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MMS dont  works. ^^

Original comment by Katzen...@gmail.com on 22 Jun 2011 at 9:10

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Italian image drains battery highly!
100% --> 43% in 5h42min.

MMS must set correct in APN (in Germany) - worked well in original image and in 
italian image.

@migaxmoi...@gmail.com: This are not the correct values. Other phones with 
other systems tell much more values - so must the battery drain within 3 
hours.. but phone runs 3 days. (tested e.g. on Huawai U8120)

Original comment by Nobody...@googlemail.com on 23 Jun 2011 at 10:24

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where to find my correct german apn?

Original comment by Katzen...@gmail.com on 25 Jun 2011 at 4:47

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I think wkp has got some new mobile phone... so he is no more interested in our 
POOR 620 :(

Original comment by xah...@gmail.com on 26 Jun 2011 at 5:55

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Or he is dead.
Will try to fix battery problem and if i find a solution i will distribute on 
my homepage. but i will start wehen i have free time.

Original comment by Katzen...@gmail.com on 27 Jun 2011 at 9:25

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New experimental has bigger issues...

Original comment by ste...@konink.de on 1 Sep 2011 at 5:49

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Issue 164 has been merged into this issue.

Original comment by wkp...@gmail.com on 4 Sep 2011 at 6:03

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Issue 149 has been merged into this issue.

Original comment by wkp...@gmail.com on 4 Sep 2011 at 6:12

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Issue 149 has been merged into this issue.

Original comment by wkp...@gmail.com on 4 Sep 2011 at 6:12

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Original comment by wkp...@gmail.com on 6 Sep 2011 at 11:04

• Changed state: Staled

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use system 20110906, after a few days i found that battery drains more fast 
than the last system..

Original comment by SamSamb...@gmail.com on 11 Sep 2011 at 11:11

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Yes.
The Battery consumues more energy.
Even with WLAN, GPS, Bluetooth deactivated, seettingt the screen brightness 
down to its minimum and running the phone in the powersave mode.

Original comment by Katzen...@gmail.com on 12 Sep 2011 at 12:47

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1. turn off auto rotation. to minimize akmd(sensor daemon) power consumption.
2. turn off auto brightness (same reason but a little bit effect)
3. checkout background apps/services.

Original comment by wkp...@gmail.com on 12 Sep 2011 at 1:51

• Changed state: FAQ
• Added labels: Type-FAQ
• Removed labels: Type-Defect

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I did it.
But my energy problem is still alive ^^

Original comment by Katzen...@gmail.com on 13 Sep 2011 at 1:59

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From my perspective, using mostly wifi, the wifi usage is virtually all battery 
consuming. Disabled the magneto's etc. Using the image 5 sept, which should 
have addressed the wifi power. Which I doubt it succesfully did.

Original comment by ste...@opengeo.nl on 13 Sep 2011 at 2:56

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My phone still lost more energy than normal even with wifi disabled.
as example listen to music consumed more energy since openeve
in open etna and in the orginal android 1.5 firmware the neergy consuming was 
okay
in the beginning of openeve it was fine too

Original comment by Katzen...@gmail.com on 16 Sep 2011 at 2:47

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Is it possible that the actual issue is the brightess of the screen? For some 
reason it is impossible to get the brightess lower to something that is 
remotely close to one lux.

Original comment by ste...@konink.de on 16 Sep 2011 at 7:26

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why don't you attach your screenshot of "battery usage" found at the 
Settings=>About phone=>Battery use.

we already know some battery related issues and had fixed its like as "WiFi", 
"libaudio", etc.
I think some issues are related with it and some issues are unknown.

and the Official Firmware + OpenEVE kernel (same as GB kernel) almost have no 
problem.
its says this battery issue is not likely related to the OpenEVE kernel.
----------
currently the auto brightness of the screen was tuned somewhat bright (issue 
#16).
you can turn off auto-brightness of screen.

attached screenshot is mine
 - WiFi : almost turned off
 - auto-brightness : turn off
after ~15hours, 72% battery remains.

Original comment by wkp...@gmail.com on 18 Sep 2011 at 8:18

Attachments:

• battery-wifi-off.png

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I will try the new system image now.

Original comment by Katzen...@gmail.com on 18 Sep 2011 at 9:07

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But the problem has one thing that i don't like.
Don't know if its a bug.
But if i want to hear my mailbox the sound is lower than if i hear music when i 
use my headphones.

Original comment by Katzen...@gmail.com on 18 Sep 2011 at 9:46

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I'm using system 20110918 snapshot, and do this setting:
1. turn off auto rotation. to minimize akmd(sensor daemon) power consumption.
2. turn off auto brightness
and this is attachement my screenshot of battery usage, the screen use more 
energy, 68% than the system before (system 20110906) which use 50 % of energy

Original comment by SamSamb...@gmail.com on 18 Sep 2011 at 11:13

Attachments:

• screenshot_2.jpg

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@SamSamb // ~30 min is too little :)

Original comment by wkp...@gmail.com on 18 Sep 2011 at 12:35

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@wkp

What do you want to see? The phone with WiFi and screen off? Or WiFi on, and 
just the screen off doing nothing with it?

Original comment by ste...@konink.de on 18 Sep 2011 at 12:44

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the battery problem has many factors. so I just show you how one can figure out 
his own battery problem by himself.
maybe all of you already know.

someone can says "WiFi consumes too much power", or "Display consume too much" 
etc. based on it.

and I think the screenshot of battery usage shows his major battery consuming 
condition more quantitatively
rather than say "too much power consuming", effectively.

Original comment by wkp...@gmail.com on 18 Sep 2011 at 1:14

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The mobile network standby uses the most enery from my battery
more if i use the G3 network

Original comment by Katzen...@gmail.com on 19 Sep 2011 at 4:33

Attachments:

• screenshot-1316419473400.png
• screenshot-1316423926922.png
• screenshot-1316423916863.png
• screenshot-1316440522572.png

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with the latest release and the screen auto brightness off...
with normal usage, 1day and 18h :D
YEY!!!
thank you wkpark!

Original comment by migaxmoi...@gmail.com on 20 Sep 2011 at 8:32

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With the lg firmware i get 3 days of usage.
I still find something wrong with just 1 day of usage....

FAST

Original comment by jsea...@gmail.com on 20 Sep 2011 at 10:47

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there is a regression about battery consummation on latest boot image.
booted back to boot-gb237-111011a.

Original comment by skun...@gmail.com on 16 Nov 2011 at 1:46

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@skunk73 // I have almost no problem with battery.
with normal use It last about 3~4days for me.

Original comment by wkp...@gmail.com on 16 Nov 2011 at 8:58

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I can confirm the battery issues seem to be gone with the latest image altough 
the lowest brightness i can set seems to be too bright but i have no way of 
confirming this.

Original comment by jsea...@gmail.com on 16 Nov 2011 at 10:53

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I get about 12 hours on battery, with WiFi on. Much better than before, I 
concur with the brightness. I would require only half of it...

Original comment by ste...@konink.de on 16 Nov 2011 at 10:55