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zifis's Avatar
Posts: 308 | Thanked: 729 times | Joined on Jan 2010 @ Athens, Greece
#1
I have my N900 for 20 days now and I was pleased to see that the baterry would last for two full days.

However, this has changed since Monday night. I charged it at 23.30 Monday and it must have drained completely sometime during Tuesday night, as I woke up Wednesday morning to see it was off.

I checked the battery indicator at around 00.30 Tuesday and it was half full (or half empty) that means that half the battery drained in less than 8 hours and while the phone was idle!

This is really frustrating as I don't want to charge my phone when battery is only half empty and yet if I don't, I won't have any battery left in the morning...

I did not change my usage routine
The wifi connection is always off
I have only installed egg timer, hex-a-hop, OM weather, FM radio, tuner, cpumem-applet and nameday applet

It seems strange to me that the battery time is cut to half with no apparent reason, unless there are some issues with the latest maemo firmware update.

Does anyone else have the same issue? Is it a firmware - battery indicator bug?
 
noobmonkey's Avatar
Posts: 3,203 | Thanked: 1,391 times | Joined on Nov 2009 @ Worthing, England
#2
Originally Posted by zifis View Post
I have my N900 for 20 days now and I was pleased to see that the baterry would last for two full days.

However, this has changed since Monday night. I charged it at 23.30 Monday and it must have drained completely sometime during Tuesday night, as I woke up Wednesday morning to see it was off.

I checked the battery indicator at around 00.30 Tuesday and it was half full (or half empty) that means that half the battery drained in less than 8 hours and while the phone was idle!

This is really frustrating as I don't want to charge my phone when battery is only half empty and yet if I don't, I won't have any battery left in the morning...

I did not change my usage routine
The wifi connection is always off
I have only installed egg timer, hex-a-hop, OM weather, FM radio, tuner, cpumem-applet and nameday applet

It seems strange to me that the battery time is cut to half with no apparent reason, unless there are some issues with the latest maemo firmware update.

Does anyone else have the same issue? Is it a firmware - battery indicator bug?
Can you go into terminal and type top? - Let us know if anything is sucking the CPU dry?
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----------- Follow me on Twitter here
----------- My Photography Website and Blog is here
----------- Author of the N900 Health Check Application ----------- New Version in Extras Devel (Dec 2010 - 2.9.10)
----------- Are you on the N900 World Map? - http://pininthemap.com/maemo - masterpin: shotgun
----------- What apps do you want to see on the n900 or in MeeGo in the future? -
 
zifis's Avatar
Posts: 308 | Thanked: 729 times | Joined on Jan 2010 @ Athens, Greece
#3
Originally Posted by noobmonkey View Post
Can you go into terminal and type top? - Let us know if anything is sucking the CPU dry?
Right now I am charging so this is what it reads.

CPU user is 3.5%-5.5%
CPU sys is 1.2%-2%
CPU Idle is 92%-96%

Do you need more info?
 
noobmonkey's Avatar
Posts: 3,203 | Thanked: 1,391 times | Joined on Nov 2009 @ Worthing, England
#4
Originally Posted by zifis View Post
Right now I am charging so this is what it reads.

CPU user is 3.5%-5.5%
CPU sys is 1.2%-2%
CPU Idle is 92%-96%

Do you need more info?
Hmmmm we might need some N900 experts!

Mine is
CPU 2.9 - 5 %
sys 2 - 5 %
Idle 95 - 97 %

Seem similar - doesnt sound like anything is hammering your cpu.

Although half the battery in 8 hours is ok (if being used!) idling i'm getting about 28 hours at the moment.
__________________
----------- Follow me on Twitter here
----------- My Photography Website and Blog is here
----------- Author of the N900 Health Check Application ----------- New Version in Extras Devel (Dec 2010 - 2.9.10)
----------- Are you on the N900 World Map? - http://pininthemap.com/maemo - masterpin: shotgun
----------- What apps do you want to see on the n900 or in MeeGo in the future? -
 
zifis's Avatar
Posts: 308 | Thanked: 729 times | Joined on Jan 2010 @ Athens, Greece
#5
Thanks for the reply noobmonley

Could the alarm I have on daily be causing this?

I know that sounds ridiculous, but you never now...
 
Posts: 4 | Thanked: 1 time | Joined on Jan 2010 @ Turku, Finland
#6
Pulseaudio could be appearing in top even though no sounds are being played. This happens to me, quite rarely though and it eats ~2% cpu all the time, shortening battery life by at least 50%.
 
Posts: 2,829 | Thanked: 1,459 times | Joined on Dec 2009 @ Finland
#7
Originally Posted by zifis View Post
It seems strange to me that the battery time is cut to half with no apparent reason, unless there are some issues with the latest maemo firmware update.

Does anyone else have the same issue? Is it a firmware - battery indicator bug?
Disable 3g whenever you do not need it. There should be some statusbar applet for that.

And yes there seems to be some problem with some users with new firmware use search here and maemos bugzilla.

.edit have you rebooted?
 
noobmonkey's Avatar
Posts: 3,203 | Thanked: 1,391 times | Joined on Nov 2009 @ Worthing, England
#8
Originally Posted by zifis View Post
Thanks for the reply noobmonley

Could the alarm I have on daily be causing this?

I know that sounds ridiculous, but you never now...
Might be worth listing the processes running in top - could help identifying what you have running.
__________________
----------- Follow me on Twitter here
----------- My Photography Website and Blog is here
----------- Author of the N900 Health Check Application ----------- New Version in Extras Devel (Dec 2010 - 2.9.10)
----------- Are you on the N900 World Map? - http://pininthemap.com/maemo - masterpin: shotgun
----------- What apps do you want to see on the n900 or in MeeGo in the future? -
 
Posts: 42 | Thanked: 8 times | Joined on Dec 2009
#9
Originally Posted by zifis View Post
Does anyone else have the same issue? Is it a firmware - battery indicator bug?
I've had the same behaviour. I tend to get a good battery performance with one charge and considerably poorer performance with the next charge so there is some sort of fluctuation. Could be due to the fact that at work I charge with charge adapter while at home with the dedicated charger.

But I've also noticed that leaving browser windows running in background sometimes drains the battery pretty fast. Fortunately it seems that the fix to wlan hanging using static ip's works for me.
 
zifis's Avatar
Posts: 308 | Thanked: 729 times | Joined on Jan 2010 @ Athens, Greece
#10
Originally Posted by gnarlie View Post
Pulseaudio could be appearing in top even though no sounds are being played. This happens to me, quite rarely though and it eats ~2% cpu all the time, shortening battery life by at least 50%.
Pulseaudio? I have the media player widget on my desktop... are you telling me it never actually shuts down after playing?

And yet... i added the widget from day 1 and had no problems, this battery drain started 4 days ago...
 

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