[Q] Battery drain on CM7.2

heihei_ivan · Feb 15, 2012

Hi all,

I am using CM7.2(FXP106) on my Xperia arc, with the kernel that comes with it. But I find out that battery drain is much more worse than the stock. 42 ROM. I usually charge the phone to 100% before I sleep, and the phone only uses 3% during my sleep with stock ROM. (stock kernel, cpu is downclocked to 768MHz when screen is off, using conservative governor.) However with CM7.2 my phone consumes more than 10% during my sleep.

I also downclock the cpu to 768MHz when screen is off the cpu governor is smartassv2. In battery usage, mobile standby and phone idle consume the most. lol (It used to be display with stock rom) Is there any possible workaround? thanks a lot.

Ivan

Glenfiddich01 · Feb 15, 2012

ok, i try to give you a view points to check:

read and install this on your phone. I had also a battery-drainer on my phone. i found it and now i´m happy

One time, on my x10miniPro the facebook app drain my battery.

Have you clear dalvik-cache before you install the rom? full wipe?

I installed many custom-roms at my x10 miniPro. Sometimes i have also fast battery drain. Then i made a second time a full wipe, clear dalvik cache and install the rom new. This fixed most of the problems.

try this and report

drcyber · Feb 16, 2012

I had the same issue, but they closed the Issue at the project-page:
http://code.google.com/p/freexperia...tatus Priority Milestone Owner Summary&id=155

for this reason i changed to Arconium, and.... 1% during a whole night in flight mode, with FXP it was about 10%!

i really miss the additional settings from CM7 but as long as this Problem exists , even if they say its normal, i wont switch back.

Boudin · Feb 16, 2012

I had exactly the same problem whith CM7.2 FXP107

It was "Cell standby" (I'm not sure it's how it's called in english) that was anormally draining battery. It may be linked to baseband (I was using 64 one).
I had wiped everything possible before, flashed with CM7.2 kernel.

So I swiched to Arconium 7 + DoomKernel 0.18 + baseband 36 with patches. No problem since.

I don't know where the problem came from, it didn't took time to investigate, it was to much of a drain to keep my phone like this.

drcyber · Feb 16, 2012

Boudin said:
It may be linked to baseband (I was using 64 one).
I had wiped everything possible before, flashed with CM7.2 kernel.
.

i also tried Baseband -36 and -56 no difference, Full Wipe Battery Calibration and so on, but nothing changed.

dp94 · Feb 16, 2012

There is no excssive battery drain on CM7.

Flash latest kernel, try different basebands, calibrate the battery sometimes (correct calibration !) and you won't have battery drain anymore.

I lose about 1,5 % in deep sleep and about 5 % with heavy (e.g. streaming, gaming).

drcyber · Feb 16, 2012

dp94 said:
I lose about 1,5 % in deep sleep and about 5 % with heavy (e.g. streaming, gaming).

per hour?

now i lose 1% in 8h flight mode, with FXP it was 10 times more!

dp94 · Feb 16, 2012

drcyber said:
per hour?

now i lose 1% in 8h flight mode, with FXP it was 10 times more!

Of course per hour.

I haven't tested flight mode yet (completely useless, imo).

I don't expect any wonders, I can use my device a whole day with everything I want to do without a fear of battery dead.

drcyber · Feb 16, 2012

dp94 said:
Of course per hour.

I haven't tested flight mode yet (completely useless, imo).

as i use my Phone as alarm clock its very usefull

I don't expect any wonders, I can use my device a whole day with everything I want to do without a fear of battery dead.

but for me a whole day in 3g was not bossible with fxp, after 10 hours of medium use, it was over.
(with 3 you cant switch to 2g in bigger cities in Austria)

dp94 · Feb 16, 2012

drcyber said:
as i use my Phone as alarm clock its very usefull

Okay, then I'll understand you.
I miss those old devices, where the alarm worked, even when the device was powered off.

drcyber said:
but for me a whole day in 3g was not bossible with fxp, after 10 hours of medium use, it was over.

Really? I've constantly 3G on.
Try the things I've described above.

drcyber said:
(with 3 you cant switch to 2g in bigger cities in Austria)

Switch to the best operator in your country.

I don't want to avertise here.

drcyber · Feb 16, 2012

dp94 said:
Okay, then I'll understand you.
I miss those old devices, where the alarm worked, even when the device was powered off.

in this case: YES

Really? I've constantly 3G on.
Try the things I've described above.

what type of calibration do you mean? the app? i tried both , the app and i found somwhere here a description with full charge, cwm and so on, but i did not help , not even a bit.

Switch to the best operator in your country.

and pay the double Price of my package? No Way.

dp94 · Feb 16, 2012

drcyber said:
what type of calibration do you mean? the app?

No, there's somewhere a description.
I don't really remember right now and too lazy to describe.

I'll look it up for you, when I get home from work.

drcyber said:
and pay the double Price of my package? No Way.

It's a pity that's an argument.

Sent from my LT18i using xda premium

drcyber · Feb 16, 2012

Today when i came home i got a letter from your best provider, but adsl-section.. >

they want more money...

Gesendet von meinem LT15i mit Tapatalk

dp94 · Feb 16, 2012

drcyber said:
Today when i came home i got a letter from your best provider, but adsl-section.. > they want more money

PM me, I work at this very operator (in IT Outsourcing, but company is company).

EDIT: There you go (instead of xRecovery use CWM).
If this doesn't help either, here are more options.

ooidort said:
STEPS:
1. Download and install xRecovery from here.
2. Charge your phone to 100%
3. Turn off the phone and boot into recovery
4. In recovery, go to Advanced options --> Wipe Battery Stats --> Yes
5. Take the battery off
6. Insert the charger chord
7. Put the battery back and wait for the phone to boot
8. Once the phone boots up, you will notice that the battery percentage is around 88% instead of 100%
9. Charge the phone back to 100%
10. Repeat 4-5 times, seems to be the sweet spot
11. Enjoy your hopefully better battery life and report!

Sent from my LT18i using xda premium

drcyber · Feb 18, 2012

Thx for the Guide , but this doesnt work for me, once i had 82% after the first reboot , but now my phone doesnt boot automatically when i re insert the Battery, there is just a charging Symbol. when i boot manually , i have 100% battery.

jonxz · Feb 27, 2012

You can use Toggle 2G with CM ROMs, pretty good in saving battery, you can set data to switch to 2G after certain minutes after the screen is off.

http://xdaforums.com/showthread.php?t=739530

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[Q] Battery drain on CM7.2

heihei_ivan

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Glenfiddich01

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drcyber

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Boudin

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drcyber

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dp94

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drcyber

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dp94

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drcyber

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dp94

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drcyber

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dp94

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drcyber

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dp94

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drcyber

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jonxz

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