Re: PR1.1 and unusual battery drain (not wifi related)
 

at my phone hildon-home is idle?? says 'S' so sleeping.

I don't think it's normal, was it using 20% before you installed firefox as well??

Re: PR1.1 has introduced a battery drain bug (not wifi related)
 

In my eyes the "pulseaudio" task is suspicious. It's responsible for all kinds of audio. If you had audio active while you took the screenshot, then there's nothing to worry about.

OTOH if you did not have any audio active, then you might experience a problem that I have from time to time: Pulseaudio consumes 3-8% CPU without playing any audio. This is always preceeded with audio usage of some kind (like opening the media player and closing it) but not with a 100% reproducible pattern.

The workaround for this problem is to reset pulseaudio, by issueing "killall pulseaudio" (from a root shell). The pulseaudio system will then automatically be started again (you will not loose the ability to play audio), but the new incarnation of it notes that there is no audio to play and goes back to 0.1% CPU.

Note that I didn't update my N900 yet, so maybe this advice is not helpful to your problem.

Re: PR1.1 and unusual battery drain (not wifi related)
 

The pulseaudio is from the systemsound of the camera, I think.
I just checked that by taking another screenshot, before the shot, pulseaudio wasn't in the list, but as soon as I took the screenshot it was there.

Re: PR1.1 and unusual battery drain (not wifi related)
 

I have to say that I also notice a shortened standby time.
I am having the impression, that it only occures when presence is set to online. I am currently using Skype and ICQ. I will switch one of them off and see if it changes anything, in the next days.

At the moment battery life for me is shortened when I use presence. I will be glad to carry out tests, in case somebody responsible for it tells me what to test / log.

Best regards,
Corwin

Re: PR1.1 and unusual battery drain (not wifi related)
 

No, I would remember it. Now FF is uninstalled, but hildon-home is still going at it, even after a reboot.

I'm guessing it's a pretty important system process, so I won't try to reset it with a killall, like pulseaudio.

Re: PR1.1 and unusual battery drain (not wifi related)
 

Guys, another possibility is that the charger is not fully charging the battery! (even though it says its fully charged).I`ve charged the phone up, the device was fully charged.Then I`ve surfed for 4-5 minutes through wifi, and the battery was discharged just a little bit....then I plugged the phone again and it started charging for at least 30-45 minutes more, even though the battery was fully charged?This is strange!:confused:

Re: PR1.1 has introduced a battery drain bug (not wifi related)
 

I agree on this one. battery lasts longer after updating! Before the update i could not last threw the day now it does easily. But, signing in im accounts drains the battery very fast which is a pity. I would love to stay signed on threw out the day.

Re: PR1.1 and unusual battery drain (not wifi related)
 

Just to clarify, the original problem reported is not poor battery life 'in general' but a huge and sudden battery drain that made the device warm and drop 16% in one hour when idle.

It hasn't happened in the last 2 days, but some race condition will cause it to happen again at some point... probably at some urgent time I need the phone :)

Re: PR1.1 and unusual battery drain (not wifi related)
 

that's not what i have...

here's my device setup:

1. screen set to 3/5 brightness
2. wifi off
3. set to 2g or 3g but mostly i see 3g signal is good
4. i have 1 skype account configured but most of the time it's set to off
5. i have a 1900mAh battery installed instead of the stock 1320mAh battery
6. i have only one widgets on the desktop and it's the desktop command execution widget i use it to check my battery percentage, other than that it's only contact shortcuts and shortcuts to programs. i have that widget configured on a secondary desktop and it's set to only update on click or on viewing that desktop.

i took it off charger this morning at 9:30 and it was showing 95% battery. with no wifi active and IM accounts offline, i had 1 phone call which lasted about 2 mins and now at 10:06 it's showing 85%...

somehow i think something is REALLY broken...

Re: PR1.1 and unusual battery drain (not wifi related)
 

link to buy 1900mAh battery? I thought Mugen were the only reputable brand?
Did it give awesome battery life before PR1.1?

Re: PR1.1 and unusual battery drain (not wifi related)
 

My n900 was warmer than usual for a couple of hours after the 1.1 update which had me somewhat concerned! However it is back to normal after a reboot and I have not noticed any battery life issues at all...

While I wish I had a larger battery in the device I dont know if I trust all of the aftermarket options... I would be suspicious of the battery here, does it also drain quickly with the stock Nokia battery?

Re: PR1.1 and unusual battery drain (not wifi related)
 

yeah i want a hi cap battery
linkage would be nice :)

Re: PR1.1 and unusual battery drain (not wifi related)
 

the 1900mAh battery i had use to give me great battery life, i use to be able to get at least 20 hours of battery life. i.e. disconnecting at 9am and then at 9pm at night i'd still have something like 40-50% battery left.

this is not mugen proper but i think it's their supplier in China. battery is even worse with the stock battery...

i only get something like 12 hours (even less maybe) now...

Re: PR1.1 and unusual battery drain (not wifi related)
 

Okay, I'm fairly sure now that Firefox is the culprit behind the sudden battery drain.

Recap: after the update I reinstalled my applications, including Firefox. Then I noticed that the battery drained completely within only a few hours. I uninstalled a few apps, including Firefox, and the problem seemed to go away. Then I began troubleshooting by reinstalling the apps one by one, starting with Firefox.

Sure enough, after installing Firefox the battery dropped again, drastically. From having been fully charged I suddenly noticed it being almost empty. I then checked with the top command and noticed hildon-home using around 20% CPU constantly. I uninstalled Firefox again, and after a reboot and some waiting, the battery became stable again. I've had it like that for many hours now without noticeable drain.

So: UNINSTALL FIREFOX! It somehow makes hildon-home go into overdrive and eat your battery in a few hours time. Make sure you get the Mozilla runtimes too. Simply not using FF doesn't help, you gotta uninstall it.

Hope this helps anyone else having battery troubles after the update!

Re: PR1.1 and unusual battery drain (not wifi related)
 

i don't have firefox installed... when i first installed it and that was before the update i found the battery drain increased and uninstalled it right then.

that's not it for me... :(

Re: PR1.1 and unusual battery drain (not wifi related)
 

Damn =/ Try uninstallng all apps you can live without and see if it helps. Maybe there's another app that does the same to hildon-home as FF.

Re: PR1.1 and unusual battery drain (not wifi related)
 

I have firefox installed, I very rarely use it but like I said above I see no major issues with battery life.

Re: PR1.1 and unusual battery drain (not wifi related)
 

i noticed my battery lasted shorter too; and i also noticed that it takes longer now to fully charge the battery

Re: PR1.1 and unusual battery drain (not wifi related)
 

i have the default apps installed, i've removed the weather widget, system info widget (even though they weren't activated).

the only really different thing i installed is google-pinyin but i have no idea how that could possibly be using up the battery... that's only activated when a text input is selected and i close the conversation app everytime before i put the device on standby...

i'm out of ideas...

Re: PR1.1 and unusual battery drain (not wifi related)
 

perhaps the n9 isn't fully recharging its battery? I've noticed that when plugged in via usb to my computer, and the led turns green (theoretically fully charged), and then I unplug for a few minutes, mess around with it, and plug it back in, it seems to take a longer-than-expected time to turn green again (~10 minutes). You'd think it be pretty quick.

Don't know how everyone is recharging their unit, but try it with the provided power supply, not computer->usb. I recharge with the dumb power supply and haven't seen any power drain issues.

In pr1.1, I think they tweak some of the battery charging behavior, and maybe that has an issue of some sort.

Re: PR1.1 and unusual battery drain (not wifi related)
 

generally speaking, anywhere above 90% and the n900 shows green. also the last bit (i.e. last 10%) doesn't charge as fast the first 90% this is to ensure that the battery isn't overcharged (i forgot the official name of this method).

also, wall charger charges faster than USB as i believe the phone is able to draw higher current from it.

Re: PR1.1 and unusual battery drain (not wifi related)
 

Does anybody's N900 get warm when charging through usb on a computer? Mine does a little. But not when it's charging from a wall outlet.

Re: PR1.1 and unusual battery drain (not wifi related)
 

It's perfectly natural to warm a little while charging, that's how LiIon batteries behave.

Re: PR1.1 and unusual battery drain (not wifi related)
 

I find it curious that the N900 will not charge beyond 90%, my laptop has no problems pushing both batteries all the way to 100%.

You can check the state of your battery by running
in your xterm.

After charging (till LED shows green) I get:

udi = '/org/freedesktop/Hal/devices/bme'
battery.charge_level.capacity_state = 'full' (string)
battery.charge_level.current = 8 (0x8) (int)
battery.charge_level.design = 8 (0x8) (int)
battery.charge_level.last_full = 8 (0x8) (int)
battery.charge_level.percentage = 87 (0x57) (int)
battery.charge_level.unit = 'bars' (string)
battery.is_rechargeable = true (bool)
battery.present = true (bool)
battery.rechargeable.is_charging = false (bool)
battery.rechargeable.is_discharging = true (bool)
battery.remaining_time = 18000 (0x4650) (int)
battery.remaining_time.calculate_per_time = false (bool)
battery.reporting.current = 1099 (0x44b) (int)
battery.reporting.design = 1256 (0x4e8) (int)
battery.reporting.last_full = 1120 (0x460) (int)
battery.reporting.unit = 'mAh' (string)
battery.type = 'pda' (string)
battery.voltage.current = 4041 (0xfc9) (int)
battery.voltage.design = 4200 (0x1068) (int)
battery.voltage.unit = 'mV' (string)
info.addons = {'hald-addon-bme'} (string list)
info.capabilities = {'battery'} (string list)
info.category = 'battery' (string)
info.parent = '/org/freedesktop/Hal/devices/computer' (string)
info.product = 'Battery (BME-HAL)' (string)
info.subsystem = 'unknown' (string)
info.udi = '/org/freedesktop/Hal/devices/bme' (string)
maemo.charger.connection_status = 'disconnected' (string)
maemo.charger.type = 'none' (string)
maemo.rechargeable.charging_status = 'off' (string)

, so with only 87% charge level the battery reports full! Somehow that doesn't seem right...

Re: PR1.1 and unusual battery drain (not wifi related)
 

For me it seems that N900 reports battery charge level relative to original design capacity and not current capacity. Battery capacity is decreasing over time (battery used or not) and I think that even in new devices it's not 100%. Maybe that's the reason why battery level indicator shows 100% even if lshal show only 80%. Indicator is calibarated to prevent user complaints (my battery doesn't charge to 100%!).

Nevertheless, I agree that 87% is low. In my 1 year old laptop, Ubuntu reports capacity at 90% (AFAIK it was about 95% when it was new).

Re: PR1.1 and unusual battery drain (not wifi related)
 

my battery general charge to about 95-98%

and on the n900, even when it's something like 60% the battery bar still shows like 4/5th full... generally speaking it'll show completely full until something like 70%

don't trust the battery bar, it's inaccurate like on most nokia phones...

Re: PR1.1 and unusual battery drain (not wifi related)
 

dont know if this helps or hinders the conversation but:
I too was noticing a reasonably high drain after the 1.1 update, but I had also installed a new widget (Facebook) on the desktop and recently had firefox installed too.

In standby mode overnight, I had no connectivity other than 2g mobile, so effectively no internet but maybe some apps (facebook) and IM/SIP polling for connectivety....

In anycase, before update this was not really a problem, but now i was losing 1/4 battery overnight doing nothing.

I have since removed Firefox and runtimes, Facebook from desktop and went offline from IM and SIP accounts plus set the phone to offline overnight

results, still full battery when I awoke this morn.

I will now start to 'turn on' one thing at a time to try to identify the culprit(s). Could be the IM/SIP polling ???????

Re: PR1.1 and unusual battery drain (not wifi related)
 

It was probably Firefox. Start with that! :D

Re: PR1.1 and unusual battery drain (not wifi related)
 

In my case it looks like the Calendar app that seems to be draining the battery. After rebooting up the phone a few minutes later the calendar app is running in the background. There are no widgets on the desktop and I am not using any wifi. Does anyone know how to stop this? I have not activated the calendar app at all.

Re: PR1.1 and unusual battery drain (not wifi related)
 

Let itgo through it's boot/load sequence...i.e wait 5 minutes then do top commnad again...it may hav just had pritoirty at theat moment while loading in...then settles back to very little?

Re: PR1.1 and unusual battery drain (not wifi related)
 

don't worry about the calendar, it's probably nothing, i'd wait for 5mins like janszoon said and try top again.

also, does anyone know if that statusbar load applet uses a lot of cpu cycles? i removed it 'cause i figured if it's polling once a few seconds then it's gotta drain the battery. anyone has any actual experience though?

Re: PR1.1 and unusual battery drain (not wifi related)
 

Okay, sorry for the late reply, but before submitting a bug, I wanted to check this behaviour further.
Over the weekend my N900 was under low, medium at best usage. I couldn't reproduce nor find the same strange power drain from the first day after the firmware update. Battery was "ok" for N900 standards and my experience.

Today I have the same working hours like thursday and my N900 is behaving normaly. Charged over night, unplugged at 4am and right now - as I am typing with it - battery is about 40%. And usage was heavier than before, two and a half horus MP3 via headset, quite some internet and youtube. Even downloaded three applications from Ovi.
So it seems like it was a one-time thing.

The only difference I can really recall from the day the power drain happened would be the Mediaplayer widget. It was enabled that day and after the drain I disabled it.

Other desktop things running:
OMweather widget
calender widget
quite some application shortcuts
a few contacts
four bookmarks
RSS widget with two feeds

RSS gets updated every 2 hours.
E-Mail every 1 hour.
OMweather daily.

Re: PR1.1 and unusual battery drain (not wifi related)
 

I had lower than normal charge cycle after the update (battery lasted ~12h). But after letting the battery exhaust and then recharge I got ~48 h with moderate usage (many calls, few sms, browsing, listening to music). This is what I expect from the device compared to the ridiculous ~4-5 h I got in the beginning.

Re: PR1.1 and unusual battery drain (not wifi related)
 

I wanted to read through 8 pages of comments, but my edge is acting up :). Seems that my pr1.1 battery drain is the IM services. using XMPP and Skype only. My battery was draining about 30% faster than usual. In an 8 hour work day with moderate use (about 2 hours of on device time) I'd close the work day at around 70%. With heavy use, I'd close at about 50-40%. Since the upgrade, Im closing with light, moderate or heavy use in the 40-30%. On a tip from Speedevil and the ever helpful Pupnik, I stopped using the IM services, and have been using pidgin. My battery life has actually now gone up a little bit, today after 8 hours of very heavy use, I closed the day at about 40%. I was probably on the device using IM, playing Angry Birds, and updating my blog, as well as RDP'ing into 2 desktops and a server, for about 6 1/2 hours, out of the 8. Certainly a huge upgrade from the upgrade :). Still looking forward to a bigger Mugen battery, thats a must have with an always connected device like this. I mean, whats another 1/4" in thickness honestly?

For those who are interested. Both Pre and Post upgrade, I have been using the same desktop configuration. And I restored my program backup and used the optify script to relink all of my games. On my 3 desktops, I have the facebook widget, the rss widget (8 feeds), the conversations widget, the eyes widget, ohmweather widget with 1 city (non GPS), the calendar widget, the music player widget, and about 30 icons. Additionally my brightness is set to level 2/5 by default, and appears to autoscale based on the light hitting the front camera(?).

If anyone knows of any issues with any of my widgets (powersave ignoring for example), please let me know, even though Im happy with the battery life, I'd still like to maximize it in any way possible.

Re: PR1.1 and unusual battery drain (not wifi related)
 

Contrary to topic, I have impression that after update power usage of N900 increased in idle with wifi on.

As far as I remember before update it was about 2% per hour. Is it possible? Correct me if I'm wrong.
Now it's about 5%-7% per hour.

What are your observations?

Weird battery behavior after PR1.1
 

After updating to PR1.1 I noticed a drastic increase in battery drain. Long story short, I figured out it was Firefox that caused it and uninstalled it. The battery was fine the whole day, didn't drain almost at all, since I didn't do much with the phone.

I went to bed, battery fully charged, device idle, no wireless connections.

The next day it had turned itself off. I tried to turn it on, but it said that the battery was low and turned itself off again. Suspicious, I connected it to the charger and let it charge for a few hours until the indicator light turned green.

The rest of the day went without problems. As I didn't do much with it, the battery stayed full, only showing a small decrease towards the end of the day. I went to bed, battery (almost) full, device idle, no wireless connections.

You can imagine my surprise the next day when the N900 was turned off AGAIN. Battery empty.

Tl;dr: The battery doesn't drain during the day, but during the night it magically purges all of its contents.

Running the top command, or Conky, doesn't show anything weird.

Any ideas what's going on?

Re: Nokia N900 Battery Question (Less Efficient Over Time?)
 

can you tell me why the battery is so bad????
when i'm using my phone for internet a little bit music and txt messages it,s on half battery after 2 hours.... and it's 1 week old...

thanks.
Kevin, Denmark

Re: Nokia N900 Battery Question (Less Efficient Over Time?)
 

yeah mine is horrible as well. I pulled 6 1/2 hours today and it was dead with very little use and brightness to the lowest setting.

Re: PR1.1 and unusual battery drain (not wifi related)
 

i do not have problems with the im but my battery is so bad... i can be on the internet listen to music and txt and then after 2 hours my battery is so much down like 60-50%

what to do, i've got the newest update and so on..

thanks
Kevin, Denmark

Re: Weird battery behavior after PR1.1
 

Ok i think i found the BIG BUG on the system that causing the RARE troubles with the Battery ...

I was very happy with my Battery life with the 1.01 os ...

Anyway i decided to get more life by buying another BL-5J battery ...

Just in case i need it one day of too much N900 doing things ...

the same day that i upgrade OS... i recieve the new battery ...

So, to my knowledge, a new battery came with a 50% of charge ...

But to my surprise when i put the new battery the system show me 100% of charge :confused: ... anyway i thought rare but ok ... may be the battery came fully charged? ... so i continue using without problem ...

The same day after a few hours ... the Battery indicator display 100% yet? ... i thought ... wow amazing battery or amazing os upgrade! ..

but suddenly ... alarm!!! and red indicator! :eek: ...

So... just at may be 1% or 2% of the real battery charge the system recognize that real charge and showed ... the new battery really was at 50% of charge not at 100% that display the os indicator...

Then! ... ok i connected the charger .. and leave the phone totally OFF to get a good charge ...

After a few hours ... ok Green light on .. fully charged ... right?

Ok turn it ON and the bat indicator show 100% ... ok good ...

Then again ... heavy use ... few hours later .. the indicator show about 70% .. i thougt (wrong again) .. oh nice bat or nice upgrade...

Nope ... i installed a third party app bat indicator... and that app showed near dead battery (as must be) and the OS indicator display near 50% ...

So conclusion... the new battery NEVER was fully charged, only to 50% ... and i can't fully charge because the OS think that it's already full at the 50% ...:mad:

And here is the most rare of all things ... this behavior ... do not occur with the original Battery ... :confused: ... may be because that battery was fully charged many times with the older OS version? ... the original battery could be charged to 100% without problem and i can get nice time of usage and both indicator show the same info ... OS and 3rd party bat indicator ..

Please! some body test this... use 2 batteries ... and test!

There you will understand why some people talk about quick drain... it´s because the OS never fully charge those batteries and it's lying displaying WRONG bat info level ...

So, there ir a serius HUGE problem with the OS about Battery levels and charging ... don't know why this happend on the upgraded 1.1 ... but i can't confirm how it was using 2 batteries with 1.01... may be the same? may be not?

Ok.. OS guys ... work on that!!

bye!