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maemo.org - Talk (https://talk.maemo.org/index.php)
-   Nokia N900 (https://talk.maemo.org/forumdisplay.php?f=44)
-   -   battery better with PR 1.3 (https://talk.maemo.org/showthread.php?t=64406)

Mr. Ben 2010-10-28 14:12
Re: battery better with PR 1.3
 
I would say its been slightly improved for me (wifi only, 2G) I recently bumped up the brightness on my phone, and considering the fact that I can have a brighter screen in the same (good, not great) amount of charge would indicate an improvement on power management.

e0x 2010-10-28 14:38
Re: battery better with PR 1.3
 
Quote:
Originally Posted by egoshin (Post 854387)
Both are worked in PR1.0-PR1.1. But in PR1.2 sr_vdd2_autocomp was disabled in kernel because it seemed as a source of hardware failure.

Now we can set both to 1 again and it works for me around 24h well.

BTW, from comments it looks like Nokia set sr_vdd1_autocomp by default but I am too lazy to do a reboot to check that - can you do?

I would be not surprised if power-saving discussed here can be accounted to sr_vdd1_autocomp.
i check it iand is not enable by default , btw can you explain what this options do ? Thanks

RenaldoTT 2010-10-28 16:02
Re: battery better with PR 1.3
 
Im not too sure about the better battery life anymore but I'm expermenting with it and I'll post my views later on

egoshin 2010-10-28 16:15
Re: battery better with PR 1.3
 
Quote:
Originally Posted by e0x (Post 855348)
i check it iand is not enable by default , btw can you explain what this options do ? Thanks
Some ARM CPU power management tweaks. The documents are about hundreds pages.

geneven 2010-10-28 16:25
Re: battery better with PR 1.3
 
I'm glad to see all these mentions of improved battery life! I haven't noticed anything significant myself yet, but I was never worried about battery life to begin with.

jr1415us 2010-10-28 17:19
Re: battery better with PR 1.3
 
After the update to 1.3, when the phone indicates the battery is fully charged, running the terminal command "lshal | grep percentage" returns 85%.
On PR1.2 the same command returned 96% with full battery.

Is the battery actually charging less, or is there a calibration to be performed here?

S0urcerr0r 2010-10-28 17:24
Re: battery better with PR 1.3
 
i agree batterylife have been massivly improved and its extremely noticeable! :)
...perhaps 15-20% better, than before.

brother also noticed this with his N900 as well...

in the beginning i was unsure, but now i must say that PR1.3 have turned out to be a "sneaky" and very good update! :)

ed00 2010-10-29 01:29
Re: battery better with PR 1.3
 
Yesterday my fully charged battery drained in about 5 hours. Phone was on WiFi didn't make a single call or web just checked email couple times.
So i decided to try again little code posted by Egoshin in another thread http://talk.maemo.org/showpost.php?p...&postcount=189
It worked for me on PR 1.2 and it works now with PR 1.3
Just wanted to bring to attention if anybody having some issues with battery. Thanks to egoshin.

Quote:
Originally Posted by egoshin (Post 603585)
In addition I recommend you to run this commands and test it again:

echo "1" > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/ignore_nice_load

renice 1 `cat /syspart/applications/standby/background/tasks`
renice 1 `ps | grep modest | cut -c1-5`

It should save you a lot of battery over standby. I have increase more then 50%.

(Note: modest renice would work until you call e-mail GUI, after that it reverts back. I am working on it)

RenaldoTT 2010-10-29 02:03
Re: battery better with PR 1.3
 
Quote:
Originally Posted by ed00 (Post 856061)
Yesterday my fully charged battery drained in about 5 hours. Phone was on WiFi didn't make a single call or web just checked email couple times.
So i decided to try again little code posted by Egoshin in another thread http://talk.maemo.org/showpost.php?p...&postcount=189
It worked for me on PR 1.2 and it works now with PR 1.3
Just wanted to bring to attention if anybody having some issues with battery. Thanks to egoshin.
what does this code do exactly?

ed00 2010-10-29 02:38
Re: battery better with PR 1.3
 
it improved battery life significantly. At least for me .

RenaldoTT 2010-10-29 03:06
Re: battery better with PR 1.3
 
Yes but how ed00? what do they do really?

malkavian 2010-10-30 19:16
Re: battery better with PR 1.3
 
My battery last a lot LESS. I connect to 3G just when I need it, and it is from time to time. I don't know why. CPU usage showed by htop is about 10% (5% of htop), ram usage 150Mb. It last me about less than 10 hours and with PR 1.2 it was lasting about 40 hours.


I have just killed the tracker as egoshin suggested but I don't know if it will be the solution and if it will be permanent:
tracker-processes -t

(repeat 3 times)

EDIT TO SAY: ˇˇˇConfirmed!!! Battery now last more than a day, as before (maybe more, but I am not sure).

zlatko 2010-11-03 09:48
Re: battery better with PR 1.3
 
I have enabled sr_vdd2_autocomp in PR1.3 since 2 days - no reboots, no irregularities in phone's operation. Still early to tell if any power saving benefits though.

egoshin 2010-11-03 19:52
Re: battery better with PR 1.3
 
Quote:
Originally Posted by zlatko (Post 861924)
I have enabled sr_vdd2_autocomp in PR1.3 since 2 days - no reboots, no irregularities in phone's operation. Still early to tell if any power saving benefits though.
I did it a week ago (after upgrade to PR1.3) and I see a significant power saving while idle.

zlatko 2010-11-03 20:00
Re: battery better with PR 1.3
 
@egoshin
I still can't give definitive opinion based on the real on-time, but in BatteryGraph idle line is nearly horizontal. It wasn't like that before I enabled vdd2, even with PR1.3.
This days I am constantly doing something with the phone and I am out of my normal usage pattern so it is hard to judge, but with PR1.3 power management IS improved.

candartz 2010-12-01 22:37
Re: battery better with PR 1.3
 
after being driven nearly insane by low battery life, mine now works fine. However no widgets, no shortcuts, one desktop, manual email check, cpu at 150 mhz is the price I pay. This provides me with 72 hrs and 50 % battery remaining. Day and date on the status bar would be very welcome.

qwazix 2010-12-01 22:56
Re: battery better with PR 1.3
 
confirm! same usage, always on 3.5g, auto wifi, it never lasted the whole day, now it is about 35% when I go to sleep
________
TWOHOTSEXXX live

Joseph.skb 2010-12-02 07:55
Re: battery better with PR 1.3
 
I'm getting 1.5 days to 2 days max (and that's with no wifi) most of the day.


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