[mafo]

This worked nicely

http://forums.internettablettalk.com/showpost.php?s=fe3b264deb662e69d02d8422e1fe4b32&p=1126746&postc... 

[SITI87hajar]

Hi!

Sorry for interrupting. I just wanna get the answer to my 'little' problem with my N9.

After (almost every time) unplugged the charger from my phone, the battery level immediately shows 97%. Is this normal or my phone is in trouble with the battery?

And, after sending 20 - 30 messages, the battery level drop from 97% - 74%. I've never do a partial charge except when connecting the phone to the computer.

[dinopeh]

It is known that the PR1.1 update does affect battery drainage.

Just use it wif discipline.

Draininage is highest from wat i've experienced from web surfing, games and long chats.

Hope PR1.2 will resolve this prob.

[SergeiB]

Known bug which you may 'fix' by uninstalling something (see link)

[Bolan]

Hello,

I've had N9 for a few weeks.  A couple of weeks ago my phone started to use idle time quite a lot, the average consumption went up to 40 mA, or even more.  Having been less than 15 mA before that.  At first I suspected that this was because of me having enabled the developer mode (and I also have enabled the terminal window without having to use the developer mode).  But after a while I found out, that at least in my case the cause for the idle time increase was the Opera Mobile 11 that I had installed.  My guess is, that this somehow leaves some processes running on the background; they don't vanish even if I reboot my phone  - at least the idle consumption stays high.  Opera 11 is not (yet?) available as an "official" version for Meego, so it has to be installed with the dpkg utility.  My guess is, that this is why it also does not install 100% clean, and so some extra processes are generated.

I made a couple of repetitions in installing and removing the Opera 11 application.  Every time I got the result, that after uninstalling it the consumption went down again.  I even reached the mimimum of 4 mA (which demands, that bluetooth, Internet, etc. are swithed of, of course).

This may not be the solution for everybody, but in my case it was the reason. The developer mode has not been quilty for the idle drain in my case.

[pvanhoof]

I used to work on one of the components affected as a contracter for Nokia. When an app periodically writes to certain files then will tracker-miner-fs, tracker-store and smartsearch will be woken up. In particular is a Ovi-Store downloadable app, Battery-Icon, atm responsible for a wakeup circle causing battery drain when you have it installed.

http://pvanhoof.be/blog/index.php/2012/07/05/battery-drain-on-n9-caused-by-a-combination-of-battery-...

Other apps might also have similar behavior. Whenever you see tracker-miner-fs and tracker-store continuously consumping power (when using powertop you can measure this), it's usually caused by an app periodically writing to a file. This triggers the metadata services into indexing that file (the processes with 'tracker' in their names are part of the metadata services).

In fact should apps use Harmattan's API for any periodical activity (as those are grouped together in bursts). Never should they implement their own mechanisms for periodical activity (I consider each and every call to sleep or msleep a huge bug, and that counts for each and every piece of software on N9. No matter what the technical reason for the usage of sleep or msleep is. But also acting without throttling or bursting at time intervals of several minutes, for example like what Battery-Icon is doing to update the icon in the apps view).

http://harmattan-dev.nokia.com/docs/library/html/guide/html/Developer_Library_Best_practices_for_app...

Apps should in my opinion be blocked from Ovi Store when they perform periodic activity incorrectly.

Kind regards,

Philip Van Hoof

Codeminded.be

[iceman331]

hey buddy, Must share this with u. Was facing a similar prob of slightly higher then average battery consumption at times. Check out the pics attached n u will know

The average Idle consumption was ~12 mA but then at times it used to go over 40mA

This would make the battery last only for a lil over half a day which other wise could easily go for a day with moderate useage. With the screen being set at 80% brightness.

So i did some digging and found out that one of the installed programe was causing this issue. Wazapp to be precise. When i was home it would latch on to WiFi but when i went out due to the problem with my service provider it was not able to latch on to service providers Net. This meant it kept searching for net all the time increasing the average consumption.

Similarly I presume that one of the programes which u might have installed must be facing some kinda issue. Do some careful observaton and m sure u wil be able to pin point the prob.