cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Yesterday evening i installed the wifi switcher and turned off the Wifi radio completely and overclocked my n900 to 825 Mhz (125 Mhz idle).

Before i went sleeping Battery graph showed:

897 mAh, 32% charge.
Today morning after 9 hours it showed 890 mAh ,31%

i couldn't believe!

theoretically it should last for:
897-890 mAh / 9 hours = 0,8 mah/hour

fully charged my n900 is about 1150 mAh:

1150/0,8 =1437 hours
1437/24 =59 days theoretical standby time

can it be true???????????
even half of that would be great...and what is about 2 g?

http://img684.imageshack.us/img684/9...0100412103.png
notice the flat line from 1:30 to 10:30 a.m. , almost no discharge

My configuration:
N900 3.2010.02-8, 825mhz Kernel Fiasco Image file (125/250/500/550/825) , 3g network,not connected to internet, bluetooth off, gps off, switched to 3g network witch statusbar-tool,
4 Homescreens only with passive icons (no internet aplets)

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g))
 

Be a brave researcher, sacrifice yourself for the greater good and just leave your N900 where it is until the battery drained empty.
After that, tell us how long it lasted :P

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

50 days without my n900?? OMG
this would be to hard .. like one mounth without my girlfriend :-) :-)

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

how did you overclock your n900 im not quite sure what that is?

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Mine is idle for over 2 weeks, but than I don't switch it on...

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

i downloades the image here:
http://www.farahfa.com/n900-custom-k...ction=download
download it to /home/user/Mydocs/
from terminal enter:
sudo /sbin/fiasco-image-update your-downloaded-image-file.fiasco

but be careful..at your own risk

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

from what i've read on lehto's website, flashing the kernel voids your warranty, is that a confirmed statement? and how would nokia know if it were flashed with another kernel?

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

They wouldn't just reflash with stock kernel before sending it to them if needed.
Shhhhh ;)

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

After these kind of statements I wonder why people just don't get it why walled gardens are for companies on some level very very intriguing thing to do.

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Haha, here's my graph, interesting since I can get about similar performance as lq_sunshine..

Just a few pointers, turning availability off helps quite a bit. However, the MSN Haze Plugin is a major culprit! I got more than twice the battery life I had just by disabling the MSN plugin! Dont know if this has to with the number of people in the MSN contact list though.

Here's my battery graph, I kept my two SIP accounts up just to test.

and without the SIPs on, at night, the battery level almost literally flat-lines, which is quite amazing!

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

@lq_sunshine the proof of this will be in the pudding.

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

@cashclientel i don't want to proove it yet, because i like the n900 so much. i have since 5 days.

I think that the things that save the energy are the 125 mhz idle clock.
and the turned of wifi (hardware unloaded from kernel).


For people wo dont want to risc overclocking there should be
a 125 - 600mhz Kernel file (125/250/500/550/600) without overclocking the dsp.Maybe someone will develope it...
the stock kernel doesn't support 125 Mhz yet :-(

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Has anyone already reported a bug to support 125 - 600mhz Kernel file (125/250/500/550/600) without overclocking?

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

More or less - https://bugs.maemo.org/show_bug.cgi?id=7116

As this used to be enabled in pre-release kernels but was dropped for the release version, I rather doubt Nokia will re-enable it.

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

you'll learn mate! ;0)

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Nokia will never re-enable 125mhz as it is too risky. The pitfalls are obvious and the gains are non-existent from their POV

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Then someone will write one up to allow 125MHz idling mode. May be OC it to 650MHz clock and low it down to 125Mhz. I think OC to 650MHz will not shorten the cpu's life as much as the 800MHz+ OC.

Can anyone confirm?

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Wait, isn`t the Lehto 125/900 kernel using idle speeds of 125mhz?Is there a bug that doesn`t allow the phone to idle to 125?Cause conky reports that it idles fine at 125....Am I missing something?

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

It's all about the heat. As far as I understand, the megahertz themselves can't hurt silicon.

So assuming that the cpu produces more heat at 800Mhz than at 650Mhz, you're correct.

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

You can do all this by using one of titans kernals, see the overclocking wiki, it will explain everything you need to know, im currently using the "ideal" kernel with min of 500mhz and max set at 1000mhz but all the other kernals range from 125-1200, although they start at default 250-600 (i believe) untill you set the frequency you want.
Hope this helps :)

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Link? i'm on N900

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Can anyone else confirm my expirience?

Yesterday i tested the 700mhz kernel and the battery drain wasnt that good anymore. 10% Battery in 9 hours and the discharche line wasnt so flat .

So i again took 825mhz Kernel Fiasco Image
http://www.farahfa.com/n900-custom-k...ction=download
and the discharge line es very very flat again.

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

I have 800-125 kernel and I see a VERY big improvement in standby battery performance. I think nokia introduced a bug in the latest firmware that reduces standby time alot and somehow lethos kernel fixes that. Or maybe it's just the extra underclocking at work.

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

i dont know, where the great improvement comes from.
it should be examined,because my n900 now seems to have a better standby time than all my previous phones together.


Did you also disable wifi completely with wifi switcher? thes helps a lot.

LQ

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Hmm, just a quick question, did you use an LV, ULV or XLV kernel for the 825 test? either that, or the idling is quite good on those kernels, and any work it would need to know would go through quick enough to revert back to idlie quicker. Will try it out soon.

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

hi @adalal,

i took the 825 from the link i posted.
I asked the developer about the voltage.He said ,that it is normal voltage, no ULV.He also dont know why the battery drain of the 700mhz kernel is not as good as the 825 mhz one.

I had no problems or instability (stuttering) with the 125 idle state.
Its perfect :-)

Today i will try the 800 mhz.

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Hm.. when I'm lucky I get 6-7 hours standby with 3G-connected (sipgate and skype), 30mins mailcheckinterval (imap) and hourly mfe-sync (and bluetooth on without connections)... using the same kernel.
Something is very weird. Either at mine or your phone.

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

@miwalter,
do you also use the wifi switcher to turn off wifi hardware?
wifi uses a lot of energy even if not connected as it scans for available networks.

AND:
i only get the good discarge values wenn idlie, without any internet network connected.(only 3g for phone)

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

No I did not. But I raised the scan-interval to 30min.

Ah. I thought by 3g you meant connected...

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

yo! Okay so it's great to see a lot of overclocking going around. (Great work guys!) Needless to say I want to overclock too. I am not so much into multi-tasking or playing games via emulators. I just want to ensure that my YT videos (HD) runs smoother than what it does currently. What are the suggestions for me? What frequency should I overclock to?

Sorry for the n00b questions:
- Which one involves least risk?
- Does a reboot of the phone reset the frequency?

I did a lot of reading on the forum but the amount of posts just confused me even more. I guess it's also important to mention that I am new to n900 and maemo5.

any help much appreciated.

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Read:
wiki.maemo.org/Overclocking

I have read it... And it completely dissuaded me from overclocking.
Under-volting doesn't reduce kernel damage because of SmartReflex.
Running the chip all the time at 600MHz vs. 500MHz already decreases lifespan twice, hence 600MHz is considered overdrive.

I installed WiFi switcher. Unloading of unneeded modules, turning off unneeded programs should be the way to go.

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

Eh, that's what they say. I don't believe it - some people have been OCing since the beginning(like 9months-1yr) without issue. I've been running mine at 900-950mhz OC(with custom voltages; undervolted compared to stock) since I got it a good three months ago. By now - if things were as exponential as calculated - I should be seeing mine dead, or at least have to downclock it or boost the voltage or something. But I'm not, and probably won't have any trouble for months if not years.

Once I see someone who had their device OC'd significantly have it actually die... I'll worry. But I haven't, so I won't.

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

More people have dead USB connector than dead CPU :)

Re: cant belive it: my N900 @825Mhz with 50+ Days idle standby (3g)
 

That statement might have made a little bit of sense, but for the unfortunate fact that the feature you refer to as smartreflex is disabled by default, since it causes instability (read: immediate crash) for a large percentage of devices.