S3 mini battery drain by Kernel process

[joe_sully]

Hi all,

My wife decided to dump her iPhone and move to android after I raved so much about how good my S3 was. She brought the S3 mini approx 6 months, ago but right from day one it has had terrible battery life. She very rarely uses it for anything other than an alarm, so I installed the GSam battery monitor to find out what he problem was. This continuously shows that the Android OS kernal is chewing through most of the battery so if anyone has any ideas as to why this is then I would appreciate your advice.

Attached is a screenshot of what is consuming the battery


And below are the details on the Kernel process. It is running Android 4.1.2 with firmware XXAMJ2

Thanks for your help

GSam Labs - Battery Monitor - Export Data
Kernel (Android OS)
14 Dec 2013 21:42:04

Usage Details
CPU Usage:8m 20s
CPU Usage (Background Only):8m 20s
Keep Awake:8m 22s
App UID:0

Wakelock Detail

Included Packages

Included Processes

shm_common_chan
shm_ca_wake_req
vold
file-storage
migration/1
ecryptfs-kthrea
at_core
jbd2/mmcblk0p23
kworker/u:4
kworker/u:3
kworker/u:6
jbd2/mmcblk0p25
kworker/u:5
kworker/u:7
ta_loader
kthreadd
kworker/0:4
kworker/u:0
kworker/0:0
kworker/0:1
kworker/0:2
kworker/u:2
kworker/0:3
kworker/u:1
bdi-default
debuggerd
irq/72-ab8500
sh
dhd_sysioc
ueventd
jbd2/mmcblk0p12
mmcqd/0boot0
dhd_watchdog_th
wl_event_handle
mmcqd/0boot1
kswapd0
installd
admsrv
cpu-plug
/init
ksoftirqd/0
ksoftirqd/1
modem_log_relay
modem-supervisor
flush-0:17
sva-loadd
svnetd
irq/335-tc360
msa
netd
mmcqd/0
shm_ac_sleep_re
watchdog/0
watchdog/1
zygote
kworker/1:3
kworker/1:2
flush-179:0
kworker/1:1
kworker/1:0
sia-loadd
khubd
irq/474-mxt_ts
fsnotify_mark
sync_supers
dhd_dpc

 

[GSDer]

Joe,

Welcome to the forums!

In order to determine what you mean by 'terrible battery life' we're going to need to see some different data:
- three screenshots from Settings -> Battery (see below for examples from a Galaxy S III)
- be sure the phone starts fully charged
- do not perform any intermediate charge cycles
- let the battery run down to less than 30%
You could also try GSam Battery Monitor Pro: http://market.android.com/details?id=com.gsamlabs.bbm.pro (there's also a free version) to look at the Radio Detail (you could include that screenshot as well)

Sent from my rooted, debloated, deodexed Sinclair ZX-80 running CM 10.2 using Tapatalk 4

 

[joe_sully]

Thanks for your help GSDer,

I will ensure the phone is fully charged overnight and then send through the screenshots at the end of the day.

Have a great Christmas and New Years

Joe

 

[wga22]

Any update? I am having similar problem.