Re: Battery Life just got Amazing. 4 Days of Standby!
 

now that made sense:rolleyes:

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Can someone report if they have used this device ?

http://www.youtube.com/watch?v=XUnwI...layer_embedded

Looks like it's a nice little human powered charger.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

do u think switching off the led will save battery to a good xtend?

Re: Battery Life just got Amazing. 4 Days of Standby!
 

My greatest problem with batterylife comes from the way I use the device.

I might listen to internet radio ans browse the web at the same time, checking and writing e-mails all the while and this might go on for a couple of hours.

My best solution has too been to carry around an extra battery. I wan't to take everything out of my device!

Re: Battery Life just got Amazing. 4 Days of Standby!
 

s33: I think it makes a difference. How much, I don't know. I guess, it depends on how long that LED flashes, for example, in the night it will probably keep flashing through till morning, when I check the mail. Hmm, maybe a small python script to kill that LED after sometime could be a good idea, or maybe we can the LED pattern, I don't know!

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Well, yesterday night i've installed Titan's kernel with IDEAL configuration. I know that this configuration has range 500 - 850, but push very hard to the low voltage.

Late in the day i will post the image from Battery Grap for a comparison with the one that i've sent yesterday. Well see.

Another thing that i see is that the kernel configuration have two entry for SMART REFLEX, can i activate it directly from there?

Thanks.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

I dont know about that configuration, just wrote those few lines to terminal. VDD1 could be enabled without problem, but with VDD2 phone rebooted straight away so it had to be disabled.

What are those two things actually? Does anyone know?:D

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Well, i've just posted an image showing the comparison between standard kernel (left) and Titan's kernel with IDEAL setting (right)

A slightly improvement occured, but i think that lowering the minimum frequency to 250 and activating smart flex on VDD1 the result could be even better.

Tomorrow a new test will come.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

@ pfontana77,
I do not know what you have posted to this to topic before but you probably realize that your device is not working as it should if that graph represents your device in idle state (screen off and programs closed)

No titans or any other kernel tweaking or actually any other tweak is going to make things better if your discharge is happening on that state.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Yes, you can ativate those options from there;)

Re: Battery Life just got Amazing. 4 Days of Standby!
 

@pfontana77 what kind of activity have you been performing when you took those graphs?

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Hello Slender,
in the period between 10.00 to 13.00 the phone was screen locked, but with 3G Internet Connection always on with Skype and GTalk online.

I think that with actual Titans configuration i gain a +10% of battery life, howerver is far from to achieve my obiective of 12-14 hrs before recharging.

However there's a big part of the consumption that is not CPU related, for this component the Titan's Kernel can't do anything. The point is to maximize the power saving from CPU and Kernel related components.

@ JorgeFX
The activity was:
This is the actual configuration:
1) 3G always enabled
2) Internet connection on 3G with Skype and GTalk active
3) Foreca Widget (2 hrs refresh)
4) GMail IMAP (30 mins refresh)
5) 20 mins of phone call (before 10.00)
6) 40 mins of bluetooth headphone connected. (before 10.00)
7) 15 mins of media player playng audio. (before 10.00)

Essentially from 10 to 13 the onlyt activity is a passive 3G Internet connection ...

Re: Battery Life just got Amazing. 4 Days of Standby!
 

I will check my online cpu activity to see if yours is better or not because it looks like you have much cpu load

Re: Battery Life just got Amazing. 4 Days of Standby!
 

+1

I get 1 day without caring about how much i use it as ive got the spare battery for when it runs out.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

I think i know why the battery drain. Before, my battery drain about 10-20% when fully charge even when leave it on standby overnight. I didn't have any wi-fi or anything on.

Just yesterday, I started using Autodisconnect and set some of the settings suggested like wifi to 10W and wifi power to intermediate and now my battery still full even leave it overnight. It only start draining when i am using phone or internet ect.....8hrs later within those 8hrs i been using internet, talking on phone and only then did it start to drain to 80%. And i didn't even realize my GPS was "on" all this time. Now i am switching it off since people say it's also saving battery.

Anyway, there is no question that my battery is much much better. I like the fact that when it's in idle mode...it won't be draining like it used to be...which is ridiculous.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

What drains my battery from 100% to "battery low" is when I'm at work. I have almost no signal at work because I work in the basement, but from time to time I get something. Switching back and forth from no signal to some type of 3G drains my battery within 4 hours. I have a bad habit on being on my phone even if I'm not doing anything. So for now on I need to just disconnect everything while I'm at work and only connect on my break where I can go and get some signal.

I will give this autodisconnect app a try cause it sounds pretty good from what I read.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Well I feel like an idiot, I have had AT&T the entire time I have had the device and for some reason even though I had the wifi set to 10mw I never set it to GSM 2G only. I only took a look at it after this thread. I have no widgets currently on my desktop, and I just changed WiFi to intermediate to see if there is any effect. Concerning Smartflex has anyone who has tried it lately noticed any sort of instability, I am not using any custom kernels and I am on pr1.2 via OTA update, does that make any difference?

*side note- This is why I love this community, and will give the next Meego device a shot, months later and there are still people tweaking and experimenting with the device and even though I'll probably get more battery life because my dumbass didnt disable Dual mode on AT&T as a result of this thread, the fact that threads like this still pop up and help so many users months after the device release is so awesome. Oh yeah was around Iphone4 dudes at lunch and they were talking about how awesome face****chat was, so on 2.5g I made a vid call on gchat to someone at the office and they were floored, saying stuff like how can you do that not even on 3g??

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Well, this morning another test result.

In this case i've used a modified Titan's settings based on the ULV profile, but with MAXIMUM FREQUENCY = 750 and SMART REFLEX = 1 on VDD1.

I was expecting a better result, instead is worse than IDEAL settings, see the first image: 1st block with standard kernel, 2nd block with Titan's IDEAL, 3rd block with modified ULV setting.

One more test that i've done is to leave the phone with wifi and same chat configuration active overnight. The result are pretty interesting, because the battery consumption is VERY less than the 3G connection. See the 2nd image attached (the one with blue background)

The thing that i'm not fully explain is the reason for this battery draining with 3G Internet connection, despite is quita a passive connection. Is not 3G itself to absorb so much power, as you see in the 2nd image in which 3G was enabled without internet connection + Wifi internet connection on, is the 3G Internet Connection to drain a drammatic amount of power, even if you are do nothing that be online on Skype and GTalk.

Any ideas?

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Interesting that your phone's CPU seems to be doing much less work with Wi-fi instead of 3G. What could cause such a thing:confused:

edit. Of course the Wi-fi test was done by night. Were you using you phone much when doing those day tests? It is not a surprise that even a passive 3g connection is a battery eater. I tested it and the battery will get empty in 15-18 hours with it.

How about doing same tests without GTalk or skype (and both) on?

Re: Battery Life just got Amazing. 4 Days of Standby!
 

During the period from 10 to 13 i don't use the phone, is locked. The only activity that occur during the day test is that i use gtalk and skype on my pc, and this cause that the phone chat intercept this message and save it in conversations, but i've no vibration at all, only very short sound. Consider that this occur for about 30 minutes distributed during this time period.

More test will come tomorrow, i think that i will try powertop also.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

An update: Just installed the Power Kernel, and loaded the Starving Profile. Now I am getting about 2 days of online time, with a few hours of calling, some video/music and camera usage. Night standby is about 3-4% drop in 8 hours.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

I will try it tomorrow morning.

But what you means online? 3G or Wifi? Always on with chat active?

Re: Battery Life just got Amazing. 4 Days of Standby!
 

I tried this yesterday with a non-modified PR1.2. It made my internet connection unstable (constantly connected to gtalk)
- wifi connection didn't hold up after a few hours
- at&t Edge connection kept cutting out/in during the day

also, echo 1 > /sys/power/sr_vdd2_autocomp didn't write into the file, done as root sr_vdd2_autocomp remained with value 0, vdd1 was fine

Re: Battery Life just got Amazing. 4 Days of Standby!
 

It was only the VDD2 that caused problems for me.

Does anyone know a way to make that VDD1 be on by default after booting?

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Facebook widget is horrible. It will eat you alive. (Power-wise)

Re: Battery Life just got Amazing. 4 Days of Standby!
 

I suppose I should ask this. Is there any difference between enabling smartreflex through terminal and through qcpufreq?

Re: Battery Life just got Amazing. 4 Days of Standby!
 

@zimmerit: It's no longer possible to enable smartreflex on VDD2 with PR 1.2. So, it will write 0, even if you echo 1. I tried enabling smartreflex with qcpufreq after installing the 'enhanced power kernel' and it does go through, but the 900 rebooted in less than a 1 minute. So, perhaps it's best to only enable smartreflex on VDD1. To keep smartreflex enabled on boot, edit the /etc/pmconfig file. But DON'T ENABLE THE VDD2 on BOOT. It is unstable, remember!

@te37v: I think qcpufreq enables smartreflex on both VDD1 and VDD2, and you can't select either, which could mean reboots and unstable phone if your phone can't do VDD2.

@bugreflex: vdd2 is unstable.

@pfontana77: Wi+2G, no 3G. Only e-mail active, no widgets, no chat. About 2-3 hours of Wifi surfing, 30 minutes of video and about 2 hours of calling.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

VDD2 is stable for me, and it's active, as I see a "1" when I try cat /sys/power/sr_vdd2_autocomp

It's part of the voltage settings file i made. The only instability I get is if my phone thinks there has been an unexpected reboot, and I try to load my custom voltage settings within the first 1-2minutes of the phone booting. Haven't noticed any other type of instability.
But, my phone works with even less voltage than the starving and drained files you see around, so that may have something to do with it.

Battery life-wise, my phone lasts from morning to before bed, with moderate usage. I have bad reception (both wifi and cell reception) at work.

my battery tips:
-stay in gsm mode, switch to 3g only when you need to browse.
-i'm using 100mw wifi with max power saving.
-no widgets that update
-screen brightness hasn't changed my battery life much.
-online via wifi or gsm 24/7 (when reception allows) for nokia messaging.

ask questions if you'd like, gtg for now

edit:
i.e. was at 90% off the charger this morning at 8:45am
it's 11:45pm now, and I have 23% as reported by battery graph.
today was interesting, as I noticed the vdd on startup bug, so i was testing with it, and the phone rebooted 3 times in a row because i hit my custom settings QBW button too fast

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Ok, i think that there's a 3G related high power consumption. This morning i've activated the starving kernel but i have a reboot when viewing a video, so i can't do a comparative test because the standard kernel settings were loaded for about 2 hrs.

Anyway, yesterday i have monitored through ssh with top the system activity during the 3G Internet Connection + Chat enabled. I noticed that the big activity occur during the start of the connection. So i think that even without doing nothing a big drain occur when the phone intercepet the chat that i do on PC, saving it on conversation, don't found other explanation. I must do a test during the weekend to see if this is the reason.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

did a few more tests and this is what i found about SmartReflex.

the setting seems to have no effect after a bit of heavy usage on the phone. simply refreshing the setting by issuing the 2 echo commands just PRIOR to putting the device to sleep causes some pretty dramatic effects.

let the screenshots do the talking.

the first screenshot shows the full effect of smartreflex just before i put the device to sleep. incidentally, i have the device set to offline mode (no gsm connection, no wifi - basically flight mode). i've highlighted the section in dark red.

the second screenshot shows the battery drain that i normally experience with the device in sleep and in offline mode. i've highlighted the section in orange.

the third screenshot shows my first experiment with smartreflex where i accidentally discovered this behaviour. you can see the battery continue to drain like normal for about 2 hours and then suddenly the battery graph line becomes almost flat. i've highlighted the section in yellow.

here's where the interesting bit starts (which makes it questionable): if you look at the first screenshot, you will notice the battery charge actually increasing all by itself twice (once at around 1am, and again at around 6.30am to 7.30am). there must be some recalibration going on in the background. also, from 6.30am to 7.30am, i had the phone in online mode (2g gsm only, wifi enabled but not connected to any wifi network, and no gprs/3g connection).

i will continue to run this for a few more days and observe the results. if the battery line continues to stay almost flat with this method, i'll be very happy indeed. it's time to script this up.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Wifi consumes that much power if you are sending/receiving stuff. I managed to drain it to 5% within an hour by transfer of large files over wifi.
I have wifi on all work-day long 8 hours straight, a 30min gap when driving home and another 6 hours at home and sometimes it is on over night if I forget to turn it off and still make the +40 hours of battery-life.
Wifi settings are 10mW powersaving maximum (works for me).
'Device on' LED indication off.
Widgets are only updating when at view or on-click.
2G only as I do not use it most of the time.
I do not read my emails on the device if not needed so no updating there.
No python coded widgets that eat up my RAM on hildon-home (like Recaller).
I don't use a custom kernel and I do not use any advanced tweaks.

battery-eye-shot with the 3 day duration just at the beginning
https://bugs.maemo.org/attachment.cgi?id=2849


Even with no internet connection open 3G drains more power.
In bad reception areas you may try yourself. My standard phone only cell phone dropped from 100% charged to dead within 10 hours with connected to 3G network (no internet connection logged in) instead of up to 7 days with 2G (its normal GSM and EDGE if logging in to provider network)

Neither GTalk nor Skype need 3G bandwidth.

For what? If you do not look at it it doesn't matter if it is raining or not! Update at view is just enough.

Why refresh automatically? I have +50 new mails just overnight and another 50 in the morning hours... so I know there is new mail and it is up to me if I want to look, not up to my phone to annoy me with blinking or beeping or anything

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Wi-fi surely seems battery friendly. I have the same settings as you and the battery drains about 12-14 % in six hours with few IM-accounts on.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Sorry for the delay but I was checking my online cpu activity for this days and I really think your N900 is taking much battery when online. I had run some tests and my online activity is very much lower, but the difference is I was over wifi. I can't try it over 3G because my provider does not allow it.
Here are some screenshots from battery eye:
First on standby Almost flat for several hours
Attachment 12259
Then on normal online use Not so inclined like yours
Attachment 12260

And here are on battery graph:
First on standby You can see that from 4pm the cpu stopped working and started to really save battery life to 11pm
Attachment 12261
Then on normal online useThe CPU activity isn't so bad with some browsing, calls and mail checking over wifi
Attachment 12264

So, I think the 3G is killing you, try to use 2.5G like me and change to 3G only if you need it. If someone call you over skype while you are on 2.5G you can tell them you will call on a minute, then you change to 3G (with the applet is quicker) and call over 3G, then switch back to 2.5G when you finish. It may seem annoying but is one option.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

I should have said this before when i tried to hint that pfontana77´s phone is pretty much in format state if it depletes battery on that rate when in idle.

Normal things to do in that situation include (use search here and in wiki, both places are FULL of guides how to make battery last and how to debug these kind of problems)

- Remove all widgets..ALL!
- Take off ALL scheduled events (email checking etc.)
- Turn off ALL IM accounts
- Turn off gps
- Switch 2g only mode
- Remove all apps that install something on background. Or actually list programs what you have installed so that people can suggest what to do.
- Shut down phone and remove battery
- Put it back and restart
- Start to monitor battery depletion on bare minimum usage and one by one (~in week period) put stuff on and see how it affects battery usage
(Basically disable stuff until device is just "dumb" phone)

For future. This applies actually to all computers: You should never try to pin point problem with complex device just trying to tweak one thing or install apps. Of course it´s smart to ask first if there is some app that is known to be problematic. TURN OFF everything and start debugging by turning on stuff one by one. In long run you in most cases spare much of your precious time. And if problem persists backup and flash emmc+rootfs.

Also when you have disabled and uninstalled almost everything then processor should go in sleep state when you lock device. With powertop app you can monitor if some program keeps waking your processor from sleep.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

I have noticed that turning off the gps from the settings doesn't affect anything. Has anyone opposite experiences?

That app removing should done by reflashing. Uninstalling might not cancel all the changes that they do to the phone.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Xorg process consumes 6-10% cpu all the time.....:confused:

when playing music
mafw-dbus-wrapp--- 10-17%:eek:
pulseaudio-- 7-12%

Is this normal?

Re: Battery Life just got Amazing. 4 Days of Standby!
 

I did something very simple. I installed a status bar icon that disables wifi entirely and switched to 2G mode.

I got back from a full workday and still had a half full battery. I listened to a lot of music through mediabox too.
When I want to do internet stuff I simply switch wifi back on and when I'm done switch it off.

Re: Battery Life just got Amazing. 4 Days of Standby!
 

Can u put a detailed info of what all acivities u performed and for how much time?

are u sure thats all the settings u had??
no tweaking or using any kernel or changing the frequency???

Re: Battery Life just got Amazing. 4 Days of Standby!
 

[QUOTE=slender;757754- Remove all widgets..ALL!
- Take off ALL scheduled events (email checking etc.)
- Turn off ALL IM accounts
- Turn off gps
- Switch 2g only mode
- Remove all apps that install something on background. Or actually list programs what you have installed so that people can suggest what to do.

Also when you have disabled and uninstalled almost everything then processor should go in sleep state when you lock device. With powertop app you can monitor if some program keeps waking your processor from sleep.[/QUOTE]

Why I need this device after that? :(

Re: Battery Life just got Amazing. 4 Days of Standby!
 

OMG my N900 is a beast. Of course I try really hard and I'm a "light" user. With a 900mhz overclock I getting approximately 4-5 days of battery life. After 24 hours I lose only 20 to 25 percent. This is with:

sending sms occassionally throughout the day
perhaps 20-40 min of web browsing over wifi
couple of phone/skype calls a day
use GSM only and use connectnow wifi thingy
use offline mode like no other

so essentially my phone is on standby most of the time, I don't have service (t-mobile) where I work (can't text or make phone calls there) and I do heavy web browsing on my laptop at home.

will do screenshots if asked or if i think significant