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2012-11-15
, 23:48
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#32
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IMO it eats so much battery booting up, I avoid switching off full stop.
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2012-11-15
, 23:53
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#33
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Are you sure? I always believed boots made the battery drop like insane but I more and more start to believe BME does some crappy calibration/recalculation after boot. I have seen growing my battery percentage in 10 mins after boot...
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N900 loaded with:
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N9 16GB loaded with:
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N900 loaded with:
CSSU-T (Thumb)
720p recording,
Pierogi, Lanterne, Cooktimer, Frogatto
N9 16GB loaded with:
Kernel-Plus
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2012-11-16
, 00:02
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#34
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Originally Posted by mr_pingu
CPU at near full whack for 2 minutes (~200mA) or so compared with ~20mA standby current.
Are you sure? I always believed boots made the battery drop like insane but I more and more start to believe BME does some crappy calibration/recalculation after boot. I have seen growing my battery percentage in 10 mins after boot...
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2012-11-16
, 00:06
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#35
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Originally Posted by reinob
Would love to see some documentation on what can be removed.
I completely removed the dots in my "dev-N900" and in my "spare-N900" as well. But I've never documented anything I've done so far.
With "startup" I have:
hildon-initscripts
maemo-launcher
osso-af-startup
osso-startup-wizard[*]
As long as you don't touch any of the above, you can remove anything that has the word startup in it, most importanly: hildon-startup-progress
[*] Add.: funny. I just checked in my "normal-N900" and there I removed hildon-startup-progress *and* osso-startup-wizard (that's the one asking for regional settings and time when you take the battery out for too long). I therefore declare this operation to be safe
Meanwhile in my head: Making a script that contains all removable *safe* packages. User can thick which one needs to be deleted (zenity, anyone :P)
What happens when battery have been out? It just skips that screen and you can set the time later or do we get an semi-bricked device?
__________________
N900 loaded with:
CSSU-T (Thumb)
720p recording,
Pierogi, Lanterne, Cooktimer, Frogatto
N9 16GB loaded with:
Kernel-Plus
--
[TCPdump & libpcap | ngrep]
--
donate
N900 loaded with:
CSSU-T (Thumb)
720p recording,
Pierogi, Lanterne, Cooktimer, Frogatto
N9 16GB loaded with:
Kernel-Plus
--
[TCPdump & libpcap | ngrep]
--
donate
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2012-11-16
, 08:48
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Posts: 1,680 |
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#36
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Mr pingu is correct, there is not actually THAT much power drain from booting, it is just BME giving wack values.
The lowest power state you can leave your n900 in that is not 'off' is offline mode.
In offline mode I have 3-4mA power drain, with my 1500mAh battery that is around 15.5 days(!) standby. Actdead mode is pointless (unless you have some heavy background stuff that runs all the time).
The lowest power state you can leave your n900 in that is not 'off' is offline mode.
In offline mode I have 3-4mA power drain, with my 1500mAh battery that is around 15.5 days(!) standby. Actdead mode is pointless (unless you have some heavy background stuff that runs all the time).
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N900: One of God's own prototypes. A high-powered mutant of some kind never even considered for mass production. Too weird to live, and too rare to die.
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2012-11-16
, 08:53
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Posts: 4,118 |
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Joined on Aug 2010
@ Ruhrgebiet, Germany
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#37
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But sixwheeledbeasts comment has a point, too.
Indeed, it is not that much.
Indeed, it is not that much.
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2012-11-16
, 09:19
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#38
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Originally Posted by sixwheeledbeast
With 20mA standby (or average), your battery would last around 65 hours (almost 3 days).
CPU at near full whack for 2 minutes (~200mA) or so compared with ~20mA standby current.
If booting takes 2 minutes @ 200mA, it's using all of ~7mAh, which is 0.5% of your battery capacity, thus reducing your time-between-charges by a whole of.. wait for it.. 20min
How often do you reboot anyway?
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2012-11-16
, 09:30
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#39
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Originally Posted by mr_pingu
It will come some day. I will start by seeing which standard packages are not present anymore in my dev-N900.
Would love to see some documentation on what can be removed.
[ Note: to make things easier and faster, if ANYONE happens to flash his or her N900 completely, I would appreciate it if the first thing he or she does would be to send me the output of "dpkg -l". I can obviously extract the list of packages from a fiasco image, but the less effort it takes, the better.. ]
Meanwhile in my head: Making a script that contains all removable *safe* packages. User can thick which one needs to be deleted (zenity, anyone :P)
"remove bme from system"
"eliminate actdead mode"
"create a runlevel for booting to shell"
"..."
What happens when battery have been out? It just skips that screen and you can set the time later or do we get an semi-bricked device?
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2012-11-16
, 09:32
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@ Ruhrgebiet, Germany
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#40
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Originally Posted by reinob
According to your calculation, we could roughly boot up to 200 times with one charge!? I doubt it, but am also not going to test
... If booting takes 2 minutes @ 200mA, it's using all of ~7mAh, which is 0.5% of your battery capacity, ...
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Last edited by peterleinchen; 2012-11-16 at 09:34.
Re. low-power state.. this is the ACTDEAD mode in the N900. When you turn it off and there's an active pending alarm and/or the charger is connected, it will not really shutdown but go into this low-power mode. That's why alarms work when the unit is "off" (although perhaps the hardware allows also waking up from real off state..)
In theory the transition ACTDEAD -> USER mode should be faster than from OFF -> USER.
But really, the N900 boots so fast that the original goal of this thread seems to be now that of removing the dots