why did my battery die so fast? (batterygraph screenshot included)
 

hey all,

im doing my best to remember all I did (and didnt do) this morning...

2am I disconnect my phone from the charger and bring it to bed with me...

615:630 alarm was going off... (yea, not much sleep, rough)

730ish I switch from 2.5 to 3g to check 3 clicks worth of websites...

820am i leave my phone in my locker with 3 web pages that were loaded, sitting in the background.

1030am I come back to my locker, I received an email and look at my battery indicator and its red already. WHAT THE HECK!

as im walking outta the gym my phone dies... wt*

http://www.flickr.com/photos/29629961@N03/5030706976/

EDIT: titans power kernel thing, load lv, limits 250 850

Re: why did my battery die so fast? (batterygraph screenshot included)
 

Well...just seen your batterygraph screenshot...seems that till 8H15 or so the curve decrease is pretty normal...what happened after?? I bet that CPU curve's show intense activity...you didn't forget by any chance to lock the screen ?!

Re: why did my battery die so fast? (batterygraph screenshot included)
 

Maybe the websites were heavy with flash?
It could also have been that hildon-desktop got stuck.

Re: why did my battery die so fast? (batterygraph screenshot included)
 

yea... Im not sure if I locked it... the screen goes dark eventually by itself anyway...

Re: why did my battery die so fast? (batterygraph screenshot included)
 

SAABoy is right, something is eating our batteries lately.
Same issues here last three days: one suspect, swappolube. The cpu consumption, IDLE, was amazing!

Re: why did my battery die so fast? (batterygraph screenshot included)
 

I have just had a look at my battery stats, and my battery does not seem to have been adversly affected by swappolube. certainly low usage seems fine.

either you had a few things open which was hitting swap and cpu, like auto updating web pages or an app which keeps raiisng notifications, and thus raising the screen brightness.

Re: why did my battery die so fast? (batterygraph screenshot included)
 

could you enable the cpu line in batterygraph?
i have titans lv profile at 250-850 and swappolube too.but my battery lasts 24 hours.

Re: why did my battery die so fast? (batterygraph screenshot included)
 

i guess its always possible. if it was a youtube video playing, all the battery sucking would end when the video stops, correct? as opposed to a flash ad that keeps sucking until I get back to close the webpage?

hildon-desktop would show up in conky if I caught it, correct? is there such thing as a log to log cpu activity?

Re: why did my battery die so fast? (batterygraph screenshot included)
 

I think something about Flash on the N900 keeps the CPU running even if the Flash video or whatever isn't running in microB anymore.

Re: why did my battery die so fast? (batterygraph screenshot included)
 

yessir yessir three bags full.
http://www.flickr.com/photos/29629961@N03/5031093278/

I dont have any of that swappolube mumbo jumbo installed... yet...

Re: why did my battery die so fast? (batterygraph screenshot included)
 

Well, think about it, how is a video that's stopped playing different than a flash ad? From a code standpoint? Both are pieces of flash programming embedded in a website. I would think a flash video playing would suck battery very roughly, meanwhile flash video paused/ended would suck battery ~ the same as a lightly-animated flash ad would. I honestly don't know, but to me it seems like it would work the same. The video might actually suck more power, if it's like most flash videos on websites nowadays, which have a little cycling menu of related videos for you to click on that pops up after the video plays.

BatteryGraph does show CPU activity. It's vague, and it's in purple bars, so it doesn't log WHAT was using the CPU, but it is something. Other than that, I suppose you could set up something to log the output of top, HTop, or some other process viewer.... *Shrug* Not my area of specialty.

Re: why did my battery die so fast? (batterygraph screenshot included)
 

as with bum programs, is it possible my email retrieval or 3g usage has some sort of battery debilitating loop bug? my email is supposed to update every 5 minutes but its more like every 5 hours, or when I restart my phone... also, im using 3g right now in class (as my wifi wouldnt load any pages after claiming to be connected successfully to the school wifi, and my phone is getting very hot... much hotter than I rememeber with wifi usage, is this normal?)

Re: why did my battery die so fast? (batterygraph screenshot included)
 

look really bizarre.
even if your cpu isn't very high something destroys your battery.
but i really don't know whats going on

Re: why did my battery die so fast? (batterygraph screenshot included)
 

Try this:

Tasks running in the background eat some CPU, RAM and of course battery too. And the web is a very battery resource hog. This may be due to bad code, browser still polling data from 3G, flash ads, aliens etc..but either way it doesn't require much effort to close the tasks after you're finished with them.

Re: why did my battery die so fast? (batterygraph screenshot included)
 

Haha 7:50... nice...

But if you see my second posted screenshot, the whole time that my battery was getting 'owned' cpu activity was next to nothing... how does one explain that? lots of swap (ram?) going on, with next to no cpu... or, battery graph is full of $hit?

Re: why did my battery die so fast? (batterygraph screenshot included)
 

do you often leave your phone in that locker?

coverage may be severely restricted in a metal box

and I am not sure you are showing CPU usage in that graph. At least it doesn't show in the same way it shows on my phone

Re: why did my battery die so fast? (batterygraph screenshot included)
 

yes, often. I will check my reception tomorrow and see what happens. less reception = more battery power spent to 'make ends meet', right?

http://www.flickr.com/photos/29629961@N03/5031093278/

When I enabled cpu on batterygraph, this is what showed up, the purple bar graph style :)

Re: why did my battery die so fast? (batterygraph screenshot included)
 

How was your phone signal? At work, my battery life varies depending on which site I'm at. One site has a excellent signal, a second has no signal, and battery and phone are fine. A third site has a very marginal signal, and the phone just about kills itself holding onto the signal, getting very warm, and munching though the battery in the process.

One other thign about the email. have you installed the modst fixes kicking around in these forums, that improved my email performance no end.

Re: why did my battery die so fast? (batterygraph screenshot included)
 

hmmm if you locked your phone in there in the past and didn't have this issue then it probably isn't that

you do have some CPU usage there. If the phone maintained a low signal 3g connection live for 4 hours, then that is normal

imaging talking on the phone for 4 hours in a place with bad 3g reception, this is what your phone was doing

i don't think you should worry about it. Unless you absolutely need your phone to be connected on the net, you will be much better off disconnecting from the internet and switching back to 2g when you leave it in the locker.

Re: why did my battery die so fast? (batterygraph screenshot included)
 

Not normal the part of the phone getting warmer. While on road signal going from 3.5g to 2g no connection like every 10 minutes and I haven`t witnessed the battery getting worm.

I have read that the swappolube can coz the batter drain. Its not the swappolube, with it I have better battrery live last charge of the phone was ~24 hours ago. Currently I have 70% Battery.

Re: why did my battery die so fast? (batterygraph screenshot included)
 

hi gazza, going off in a tangent here, what fixes are you talking about? Anything that can improve my email performance would be cool :) I did a search but couldn;t find anything on modst. Do you remember the threads you are talking about?

Cheers!

Re: why did my battery die so fast? (batterygraph screenshot included)
 

You are not talking about the same thing. Going in and out is not the same as being close to out all the time. When the coverage is low, the phone works overtime to reach the cells.

Re: why did my battery die so fast? (batterygraph screenshot included)
 

Yes, you are correct, didn`t look it at that angle :)

Re: why did my battery die so fast? (batterygraph screenshot included)
 

You hadn't by any chance recently loaded a pile of new music/video onto the phone had you? This happened to me the other morning, and the culprit was tracker-indexer that had kicked in and was vociferously chomping through everything to extract metadata. A few gigabytes of stuff later and my battery had plummetted by over 50% in less than an hour.

I think it does a periodic refresh too, so you may have been caught by one of those. It's normal, but resource-hungry.

Re: why did my battery die so fast? (batterygraph screenshot included)
 

Now that I think about it, I may have loaded a few hundred songs on there that morning, or maybe the morning before... hmmm...

Anyways, I suspect it was because something was pushing up against my phone in the locker, and the screen wasn't locked... maybe...

EDIT: Or very low 3g coverage.

Re: why did my battery die so fast? (batterygraph screenshot included)
 

I've had a couple of times battery draining problem with PR1.3. Battery Eye shows that CPU use has gone high right when I unplugged the charger. When I look at Conky it shows that modest is taking all the CPU it can get.

Reboot helps, but I'v experienced this at least 3-4 times with PR1.3 already! What could help?

Re: why did my battery die so fast? (batterygraph screenshot included)
 

Predicting the battery consumption when you are changing your location is very hard to do. Two examples:

This weekend, I spent 1.5 hours waiting in a building. I had 3G enabled and was using firefox to surf. Reception was pretty bad, so the phone was pumping at full force to keep the connection. The battery basically melt and went from 92% to 30% in 1.5 hours. The N900 became noticably warm. Mind you, I wasn't stressing the cpu, just the radio.

Another example. I have Alarmed set up so my phone goes offline at night. If I don't have any background-active applications running, it takes about 3-4 hours to reduce the battery by 1%. If I just left the phone like this, it would take more than 11 days (!) to deplete the battery. Not switched off, but fully running.

Battery usage depends heavily on your usage patterns and on signal reception.