148 replies to this topic

[Sandeep14]

guille26, on 17 December 2010 - 11:00 AM, said:

Recommended thread -> http://forum.cyanoge...-battery-drain/

the only thing they suggest is to restart the phone, this has not solved the problem.

will updating the radio image do the trick?

edit: the kernel is an older one. will flashing an older kernel change anything with the ROM?

thanks.

Edited by Sandeep14, 17 December 2010 - 11:16 AM.

[bavo]

In the last versions (since 5.something) i've had a lot of battery drain some times, and other times none.
It never seemed to have anything to do with a particular version.

However I did notice something: the battery draining issues only seem to occur when i'm flashing while the phone is still connected to the computer.
It might be a coincidence, but when you are having battery issues you might want to try to reflash your phone while it's not connected to a computer or power supply.

[invisiblewave]

Just to add a bit more info to this thread:
I've had the severe battery drain bug occur two or three times in the 18 months I've been using CM.  It wasn't related to a particular rom version or kernel, since I could reflash the same rom and not have the problem, rather it always seemed to be something to do with the flashing process itself.
On 6.1, I've had it occur 3 times, always overnight, I would turn the phone off and then turn it face-down, then in the morning it would be completely drained and off.  Last night I left it face up and this morning the battery was only 4% less than when I switched it off last night.  My suspicion is that when I place it face down, the trackball is depressed and this is causing the phone not to sleep.  I can't say I've proved this conclusively yet, but it's something to bear in mind if you're having a battery issue.  Clearing caches also helps for the full-on battery bug (by which I mean when the battery drains completely in about 30 mins and the back of the phone gets very hot to the touch, not the "I was on a full charge and now only 4 hours later I'm on 10%" issue).

bavo, on 17 December 2010 - 11:47 AM, said:

In the last versions (since 5.something) i've had a lot of battery drain some times, and other times none.
It never seemed to have anything to do with a particular version.

However I did notice something: the battery draining issues only seem to occur when i'm flashing while the phone is still connected to the computer.
It might be a coincidence, but when you are having battery issues you might want to try to reflash your phone while it's not connected to a computer or power supply.

That's because during the boot process the phone doesn't charge until fairly late-on, not long before the home screen appears.  This is why you need to be sure you have sufficient battery before flashing, not so much for flashing the rom, but it's critical if you're flashing spl, radio or recovery.

[Sandeep14]

i tried looking at pershoots kernel.

my battery seems to be fine - just think its the system. the main culprit is the "android system" which is the process that uses the most battery.  the only things i have that sync are Gmail, Contacts, Calendar and SMS. that's pretty much it. i do use a task killer. i have overclock widget but that doesnt work any more, so its not in use. therefore, clock speed is not altered since i flashed 6.1.

im sure that XDA thread is where i found those instructions.  instruction 4 from ooppsy7 directed to that site at XDA.

[shinobi-wan]

Just want to put my experience out there.  I upgraded to to CM6.1 from CM4 and the battery life was terrible, i figured that was just the way CM6 was.  I had some problems trying to restore my data and i had to enter fastboot do 'fastboot erase system -w' then enter recovery and wipe dalvik cache, sd-ext, battery stats and rotate stats.  Then i reflashed the same rom and reflashed the gapps.  Once i rebooted i found i had excellent battery life.

A couple weeks later i ended up going back to CM4 in order to retrieve some lost data and then again, i upgraded to CM6.1 only to find i was having the same terrible battery issues.  So once again i re-entered fastboot, and started the same process as above, wiping everything and reflashing everything and now my battery life is once again excellent.

I don't know if you need to do the full process i did, who knows, maybe all you need to do is reflash the rom but just wanted to let everyone know how i was able to fix the dismal battery life.

Edited by shinobi-wan, 21 December 2010 - 09:55 PM.

[jman316]

Im using Firerat's Magpie rom.
Can i use Rom manager to use the 2.6.34.7 kernel and flash it?

will this be ok?

[JohnN6]

cipt, on 16 December 2010 - 02:24 PM, said:

The 2.6.34.7 kernel from http://droidbasement.com also worked for me.

Another happy user of 2.6.34.7  here.  My G1 was draining in less than a day even with nearly all Data transfers shut down.

Now getting well over 48 hours usage with Battery foo and 2.6.34.7.

Tnx

[jman316]

jman316, on 22 December 2010 - 09:24 AM, said:

Im using Firerat's Magpie rom.
Can i use Rom manager to use the 2.6.34.7 kernel and flash it?

will this be ok?

Found that ADW is showing as constantly running under battery stats. Have unchecked everything in ADW so lets see if this helps.

2.6.34.7 wont work as im in a Non US country!

[Daniel Cabrera]

jman316, on 23 December 2010 - 07:46 AM, said:

Found that ADW is showing as constantly running under battery stats. Have unchecked everything in ADW so lets see if this helps.

2.6.34.7 wont work as im in a Non US country!

Hi,

I'm in a Non US country too and could flash to kernel 2.6.34.7 and works very good.