Re: N900 consumes too much power
Am 05.08.2012 21:45, schrieb Jan Knutar: On Sunday 05 August 2012, Michael Rösch wrote: The biggest leap in saving enery is to use smart-reflex. Considering how abnormal his battery use is, I don't think smartreflex is the answer. Considering smartreflex only makes a difference when the CPU is on, and on a properly configured device, the CPU spends most of the time off. You're right! Of course he has to find that process(es) that drains the battery. All information is on the pages that are linked somewhere in the thread. He statet that he is always connected to wifi at home, well that is the first thing to stop using Autodisconnect for example. CU Michael ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 consumes too much power
Am 05.08.2012 20:25, schrieb Pavel Řezníček: Now I don't exactly know what smart-reflex is for now. I surely can search for it but if you could explain it also for the others, I'd be happy :-) You can look it up here: http://wiki.maemo.org/Smartreflex OK, I'm not sure if I have the kernel-power installed for now. I'll definitely install it. Last time the installation ran without problems. CSSU. This is still a mystery for me. It's a sure choice then. I notice I am a bit noob :-D Open a Terminal an type uname -a Then the prompt should be Linux $HOSTNAME 2.6.28.10-power50 #1 PREEMPT Sun Mar 18 20:10:56 EET 2012 armv7l GNU/Linux HTH CU Michael -- Support the ban on Dihydrogen Monoxide: http://www.dhmo.org/ ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 consumes too much power
On Sunday 05 August 2012, Pavel Řezníček wrote: My Maemo and N900 knowledge is maybe abnormal (abnormally poor). I neearly sure not to have a properly configured device. Now it comes the special moment when I begin to study how to get my N900 properly configured :-) Properly configured is something like what the device is like when taken out of the retail box after buying it.. Maybe removing the location widget and the calendar widget from the desktops. Then after that there are lots of things you can install and do to make it burn battery. For example, if you turn off wifi power saving and connect to wifi, you'd go down from several days of standby, to 6 hours of standby. Also if your wifi access point doesn't support wifi powersaving, or has broken/buggy wifi powersaving. (Which is probaly why one would turn it off on N900) You said it happens also when not on wifi, so I guess that's the problem in this case. ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 consumes too much power
Hi, On 08/07/2012 04:20 AM, ext Cedric Cellier wrote: Of course offline mode is not normal. I suggested it for testing :) So that whatever software is the culprit it can no longer drain the battery very fast. If you can't stand several days in offline mode and without top reporting a process that's heavy on the cpu It doesn't need to be that heavy. Even a process that constantly wakes up just at 1s interval, (which shows only as 0-1% of CPU usage in top) will reduce device idle use-time from one week[1] to a day. This is when just CPU is used. If also network is used, the wakeups can be much rarer and they still ruin the use-time even worse. I'm not completely sure of these numbers, but if your WLAN accesspoint power management is working, I think even 5 minute interval wakeups are bad, with phone networks, the network access intervals need to be much longer for device to be able to save power. These kind of wakeup frequencies you don't notice with top, you need either strace the programs or use e.g. nethogs[3] utility. Note also that the weaker the network signal strength is, the more power is required. [1] A week with a full, *new* battery [2], no services installed etc. [2] Battery capacity worsens with time, with use and higher temperatures (check the manufacturing date when buying batteries!), see: https://bugs.maemo.org/show_bug.cgi?id=7636#c16 [3] http://packages.debian.org/squeeze/nethogs then you'll be certain your hardware is faulty. - Eero ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
Re: N900 consumes too much power
Hi, Don't know if it can help but I had a similar problem. It was caused by a bug related to auto-completion. My battery lasted only a few hours... Have a look at this thread:http://talk.maemo.org/showthread.php?p=1020718 It worked for me. Patrick On 08/07/2012 11:25 AM, Eero Tamminen wrote: Hi, On 08/07/2012 04:20 AM, ext Cedric Cellier wrote: Of course offline mode is not normal. I suggested it for testing :) So that whatever software is the culprit it can no longer drain the battery very fast. If you can't stand several days in offline mode and without top reporting a process that's heavy on the cpu It doesn't need to be that heavy. Even a process that constantly wakes up just at 1s interval, (which shows only as 0-1% of CPU usage in top) will reduce device idle use-time from one week[1] to a day. This is when just CPU is used. If also network is used, the wakeups can be much rarer and they still ruin the use-time even worse. I'm not completely sure of these numbers, but if your WLAN accesspoint power management is working, I think even 5 minute interval wakeups are bad, with phone networks, the network access intervals need to be much longer for device to be able to save power. These kind of wakeup frequencies you don't notice with top, you need either strace the programs or use e.g. nethogs[3] utility. Note also that the weaker the network signal strength is, the more power is required. [1] A week with a full, *new* battery [2], no services installed etc. [2] Battery capacity worsens with time, with use and higher temperatures (check the manufacturing date when buying batteries!), see: https://bugs.maemo.org/show_bug.cgi?id=7636#c16 [3] http://packages.debian.org/squeeze/nethogs then you'll be certain your hardware is faulty. - Eero ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users -- --- VRANCKX Patrick patrick.vran...@uclouvain.be Responsable des Infrastructures de production du système d'information (LS/SGSI/SIPR) Responsable des Infrastructures des réseaux du système d'information (LS/SGSI/SRI) Universite Catholique de Louvain - UCL +32 10 47 38 70 ___ maemo-users mailing list maemo-users@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-users
