High Battery Consumption in Standby
 

hi guys,

the battery consumption of my n900 drives me crazy.

charge over-night

10 hours of Standby ( with Bluetooth and 3G Internet ) and 1 hour talk time and the battery have to be loaded

this really sucks, any ideas?

cheers

Re: High Battery Consumption
 

open Xterminal

type

see which program use high cpu

Re: High Battery Consumption
 

Check my thread - I have more or less the same problem, I didn't find a solution but throughout the thread some people offered help - you might find your solution in it:
http://talk.maemo.org/showthread.php?t=65965

Re: High Battery Consumption
 

4-6% CPU usage

most: xorg 1-2%

Re: High Battery Consumption
 

Learn to use power search from right menu of this webpage.

Re: High Battery Consumption
 

How long have you used this battery?

Time for a replacement?

Re: High Battery Consumption
 

appr. 12 months

Re: High Battery Consumption
 

my battery also went almost flat today. killed the charger at about 9am. returned home at 1:30pm and I had 2% battery left. BatteryGraph shows the CPU running constnatly over 50%. I will do some research and return.

Re: High Battery Consumption
 

It's definitely the answer that OP and the rest should take seriously.

Re: High Battery Consumption
 

I'm using advanced clock plugin and am not having high battery consumption.

Re: High Battery Consumption
 

hello,

i installed battery graph and watched the battery over night:

8.00pm-10.00pm: charging
10.00pm-7.30am: handy idle
7.30am-8.00am: telephon call
8.00am: automatically shut down

12 hours standby and 0,5 hour voice call and the battery is dead

http://www.id-t.at/data/batterygraph.jpg

cpu usage seems to be normal!
maybe the battery should be replaced?

any other hints?

cheers

Re: High Battery Consumption
 

Are you mad? Your CPU isn't reaching sleeping mode (C4), no wonder your battery life is toast. Please paste the output of powertop. Rerun top and WATCH it. what is the NICE load shown at the top?

Re: High Battery Consumption
 

powertop:
C0 - 13,8%
C1 - 86,2%
C2 - 0,0%
C3 - 0,0%
C4 - 0,0%

top:
CPU 6%
usr: 9%
nice: 85%
idle: 0%

Re: High Battery Consumption
 

Right, so we have a background process hosing yer juice. Lets just confirm you are disconnected while taking these readings?

Install powertop as below:

Then provide that output. I can smell a runaway kernel thread!

Re: High Battery Consumption
 

You could run powertop for a while when the device seem to be idle and not in use. You will know from the output if something keeps CPU busy.

Code:

---

Nokia-N900:~# powertop -t 1200   
Powertop 1.13.3
status: Unknown job: pmtrackerdaemon
Sleeping for 11 seconds before sampling
Collecting data for 1200 seconds
Sample interval was 20m 00s 17243us

C#      | Ratio  | Avg/dura | Frequency | Ratio
--------+--------+----------+-----------+--------+
    C0 |  2.6% |          |  1150 MHz |  nan% |
    C1 |  0.3% |    0.2ms |
    C2 |  3.9% |    2.2ms |
    C3 |  23.3% |  282.2ms |
    C4 |  69.9% |  750.6ms |
...

---

Re: High Battery Consumption
 

powertop:
C0 - 8,3%
C1 - 91,7%
C2 - 0,0%
C3 - 0,0%
C4 - 0,0%

top:
CPU 6%
usr: 9%
nice: 85%
idle: 0%

Re: High Battery Consumption
 

wtf is this? Post THE ENTIRE output of powertop. If you want help, help yourself by helping us help you!

Re: High Battery Consumption
 

ignore this horseshit, just run powertop with no -t parameter.

Re: High Battery Consumption
 

Re: High Battery Consumption
 

"Normal" CPU Usage.

http://i208.photobucket.com/albums/b...0301080852.png

I had this issue previously wehre the proc was never reaching a C4 sleep but on removal of Pedometer Home Widget suddenly battery life returned to normal and my proc spent ~80% of it's time in C4 sleep. It also went from ~30,000 HW wakeups to ~700 in Powertop.

Post up the output of so that we can check your battery isn't borked - then reboot, wait for 3 minutes until system is fully loaded, run powertop from terminal, lock the screen and keys and post up the output too.

Re: High Battery Consumption
 

-_-' dude, run as root.

1. Set phone to offline mode
2. Shutdown phone
3. Take out battery for 10s
4. Take out memory card (if you have one)
5. Reboot phone
6. tell phone to stay offline.
7. wait ~4 minutes (while phone settles (should still be offline mode))
8. open xterm
9. become root
10. start powertop, shut keyboard and press lock slide.
11. leave phone for 50s
12. paste output

From the little you pasted above somthing is keeping your CPU awake, just gotta see what it is.

Re: High Battery Consumption
 

Oh yeah, I knew you were familiar switch. We have already been through this dance!

Re: High Battery Consumption
 

Hell yeh big boy, we certainly have.....! Fixed it though, good and proper - I can stretch to 2 days normal usage now, thanks to you and @ndi.

Re: High Battery Consumption
 

here we go...

Re: High Battery Consumption
 

fmtxd ?
You are transmitting FM 24/7?

Re: High Battery Consumption
 

Are you running on power-kernel?

Re: High Battery Consumption
 

nope, the phone was in offline modus
and i don't transmitting FM 24/7 :)

Re: High Battery Consumption
 

yes 2.6.28.10power46

Re: High Battery Consumption
 

C1 | 90.7% | 118.9ms |

So CPU is never going below C2.

37 | 512 | INTC | gp

There is too high a level of activity on gp (GPIO?)

0 | 411 | <kernel core> | tick_nohz_restart_sched_tick

Kernel keeps awakening the computer (due to hardware wakeup)

per |OFF: 0%|RET: 0%|INA: 0%| ON: 100%| now:(ON)
dss |OFF: 0%|RET: 100%|INA: 0%| ON: 0%| now:(RET)
cam |OFF: 0%|RET: 100%|INA: 0%| ON: 0%| now:(RET)
core |OFF: 0%|RET: 0%|INA: 0%| ON: 100%| now:(ON)
neon |OFF: 0%|RET: 0%|INA: 0%| ON: 100%| now:(ON)
mpu |OFF: 0%|RET: 0%|INA: 0%| ON: 100%| now:(ON)

All this **** should be switched off.

It looks like you are running a program/process that is (possibly) polling the hardware (IRQ counts is WAAAY too high).

As to which program that is I cannot say. Things like advanced battery monitor, desktop widgets that are set to update all the time.

You have removed all widgets from the desktop right? You did wait at least 4 minutes before running powertop right?

Can you post the output of the top command? Just type

and upload the file.

Re: High Battery Consumption
 

Secondary to the above power46 is in -devel and shouldn't be installed as it is not fully optimised for end-users. power42 is the latest stable release of the kernel in -extras.

Re: High Battery Consumption
 

hi, you can find attached the output file

following widgets i have runing:

foreca weather: update every hour
calendar home widget
simple fmtx widget
media player widget
personal data plan monitor widget

Re: High Battery Consumption
 

/rant
Sorry guys I do not have any more juice to write again all fck stuff that has been said across this board already and that can be found from maemo wiki. It just pisses me off.

Most of stuff is not obvious but after reading wiki and other user use cases and reports you tend to get picture what to do. That´s called researching, learning and respecting others.

To orginal poster, I´m facepalming while I´m saying this:
- Remove widgets
- Revert back to default speed
- Check for background daemons or apps that install stuff that stays on in background or alter maemo OS or jump starts from d-bus hooks (apmefo, recaller etc. you get the point), use top and htop apps for this.
- Take as much as possible modules/features off before running powertop (I have listed these in other thread please read it)
- After you have disabled most of stuff and powertop still gives you device that doesn´t enter sleep then it´s probably time to flash it. If not then start one-by-one enabling stuff and see when battery consumption jumps. E.g. put half of widgets on and test for couple of days -> if consumption high then again disable half of widgets....reapeat until you find your misbehaving app/widget/daemon etc.

- I do not even understand why I´m repeating this stuff that should be obvious for people who start overclocking and most probably installing stuff from testing/devel.

I hope that you find resolution and post some helpful info here. Good luck.

Re: High Battery Consumption
 

thanks slender,
but i had these problems long before overclocking, cssu and other things...
if we find the reason, we will post it here, thanks

Re: High Battery Consumption
 

Sorry but it doesn´t matter what you assume to know. For "standardized" testing and easiness for comparing to other people N900s it is always good to start from "zero"-level. It might be troublesome at first but if we repeat it* n-times it tends to be best way to debug stuff. Just start from "blank".


*Meaning different kind of people with different kind of cases where they have problem with cpu not entering to sleep state or unusual high battery consumption.

Re: High Battery Consumption
 

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Disable all widgets and try again.

Make sure you wait 4 minutes this time.

Re: High Battery Consumption
 

i did this without widgets no C2-C4 cpu usage
but i will post it in 5 minutes again...

Re: High Battery Consumption
 

Use -t option with powertop to get longer sample ;-)

I'd try to kill fmtxd from running processes. It seem to wake up CPU once every second.

Re: High Battery Consumption
 

once again, with clear desktops...

Re: High Battery Consumption
 

hmm, all those sleep | do_nanosleep (hrtimer_wakeup) are freaking me out.

ok try this, uninstall kernel-power-settings (dont worry you will still keep the power kernel).

Then do the 'procedure again'. However this time don't worry about posting your output from top.

ok?

Re: High Battery Consumption
 

also
http://talk.maemo.org/showpost.php?p...3&postcount=72