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Posts: 32 | Thanked: 3 times | Joined on Aug 2010 @ Philadelphia
#11
Ok so if you find googletalk/skype/etc is draining battery what are you going to do?... we're all obviously aware of the fact that doing nothing with the n900 is the best way to increase battery life.

what exactly constitutes "standby" for the device?
 
Posts: 1,463 | Thanked: 1,916 times | Joined on Feb 2008 @ Edmonton, AB
#12
my battery? last as long? but i wish it lasted longer?
 
Posts: 88 | Thanked: 42 times | Joined on Aug 2010 @ USA
#13
20 hours (my N900 is only a few weeks old) checking email 8-20 times a day (primarily by WiFi), 2-6 hours of music, with no widgets on the desktop (only shortcuts), with a black desktop background and all components turned off when not in use. Frequent StockThis use (5 times a day) and infrequent GPS use.
At the end of the day I still have plenty of green bar showing.
On the days in which I use iNES or any other game the battery drops much faster.
My notebook computer only gives me 1.25 hours so I'm very happy with the battery life of the N900 so far.
 
Posts: 49 | Thanked: 7 times | Joined on Sep 2010
#14
well, after i have uninstalled most of the crap applications i installed in my N900, my battery is up for 2 days and still showing 49%

i sugges all of you to remove all those applications/themes/widgets which are working all the time and cosnume ur battery
 
Posts: 1 | Thanked: 1 time | Joined on Jul 2010 @ Amman
#15
My N900 stays up for 2 days.
 

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Posts: 134 | Thanked: 46 times | Joined on Jun 2010 @ Russia,Moscow
#16
With loads of widgets and 3G N900 doesn't last long for me. But I'm fine with it as that's a trade-off for the ability to have pocket PC with me.
 
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Posts: 31 | Thanked: 5 times | Joined on Jan 2010 @ The Netherlands
#17
My battery drains empty in about 12 hours now without using it, it's just 12 hours of standby (GSM and Wifi on). Did a complete reflash (incl emmc) two weeks ago. It makes no difference if I set the max cpu to 600 or 850Mhz

Code:
Powertop 1.13.3
Sleeping for 11 seconds before sampling
Collecting data for 600 seconds
Sample interval was 10m 00s 19287us

C#      | Ratio  | Avg/dura | Frequency | Ratio
--------+--------+----------+-----------+--------+
     C0 |   7.9% |          |  1150 MHz |   nan% |
     C1 |   0.6% |    3.8ms | 
     C2 |  10.4% |    6.8ms | 
     C3 |  48.7% |  110.5ms | 
     C4 |  32.4% |  631.0ms | 

IRQ#    | Activity   | Type           | Name
--------+------------+----------------+---------------------------
     56 |      44645 |           INTC | i2c_omap
     12 |      29139 |           INTC | DMA
     37 |      11131 |           INTC | gp
     11 |       7904 |           INTC | prcm
    202 |       2001 |           GPIO | wl1251
     86 |       1601 |           INTC | mmc1
     57 |       1121 |           INTC | i2c_omap
     67 |        371 |           INTC | ssi_p1_mpu_irq0
     71 |        140 |           INTC | ssi_gdd
    311 |        140 |           GPIO | ssi_p1_cawake_gpio
     21 |         50 |           INTC | SGX
     25 |          1 |           INTC | OMAP
    225 |          1 |           GPIO | omap2-onenand

PID#    | Activity   | Name           | Function Entry (Expire)
--------+------------+----------------+---------------------------
      0 |       7510 |  <kernel core> | tick_nohz_restart_sched_tick (tick_sched_timer)
      0 |       1832 |  <kernel core> | hrtimer_start (tick_sched_timer)
     38 |       1210D|            awk | cpufreq_governor_dbs (delayed_work_timer_fn)
    484 |       1174 |         wl12xx | queue_delayed_work (delayed_work_timer_fn)
    484 |       1148 |         wl12xx | schedule_timeout (process_timeout)
    725 |        580 |      bme_RX-51 | sys_timer_settime (posix_timer_fn)
   1150 |        475 |       wlancond | ieee80211_ioctl_siwpower (ieee80211_dynamic_ps_timer)
   1509 |        399 |telepathy-pecan | schedule_hrtimeout_range (hrtimer_wakeup)
    725 |        360 |      bme_RX-51 | schedule_timeout (process_timeout)
    484 |        344 |         wl12xx | schedule_timeout (process_timeout)
    711 |        262 |           dsme | __enqueue_rt_entity (sched_rt_period_timer)
   1509 |        203 |telepathy-pecan | sk_reset_timer (tcp_write_timer)
   1545 |        196 |        skyhost | futex_wait (hrtimer_wakeup)
   1538 |        143 |        skyhost | do_nanosleep (hrtimer_wakeup)
    500 |        120 |          mmcqd | queue_delayed_work (delayed_work_timer_fn)
    500 |        104 |          mmcqd | schedule_timeout (process_timeout)
   1117 |         81 | hildon-desktop | schedule_hrtimeout_range (hrtimer_wakeup)
      0 |         64 |  <kernel core> | queue_delayed_work (delayed_work_timer_fn)
   1236 |         59 |           icd2 | schedule_hrtimeout_range (hrtimer_wakeup)
      1 |         52D|  <kernel core> | queue_delayed_work (delayed_work_timer_fn)
   2881 |         51 |hildon-status-m | schedule_hrtimeout_range (hrtimer_wakeup)
    711 |         50 |           dsme | do_nanosleep (hrtimer_wakeup)
    768 |         45 |            mce | schedule_hrtimeout_range (hrtimer_wakeup)
    710 |         40D|<kernel module> | queue_delayed_work (delayed_work_timer_fn)
   2955 |         40 |   cifsdnotifyd | schedule_timeout (process_timeout)
    725 |         40 |      bme_RX-51 | do_nanosleep (hrtimer_wakeup)
     30 |         32 |          mount | setup_wb_timer (wb_timer_fn)
     10 |         28 |    omap2_mcspi | sk_reset_timer (tcp_delack_timer)
     10 |         22 |    omap2_mcspi | neigh_add_timer (neigh_timer_handler)
   1368 |         20 |           eapd | fib6_force_start_gc (fib6_gc_timer_cb)
   1511 |         20 |telepathy-gabbl | sk_reset_timer (tcp_write_timer)
   2954 |         15 |    cifsoplockd | schedule_timeout (process_timeout)
   1088 |         14 |mission-control | schedule_hrtimeout_range (hrtimer_wakeup)
   1116 |         13 |    hildon-home | schedule_hrtimeout_range (hrtimer_wakeup)
   1844 |         13 |        pdflush | start_this_handle (commit_timeout)
   1221 |         10 |      maenotify | start_this_handle (commit_timeout)
   1511 |         10 |telepathy-gabbl | sk_reset_timer (tcp_keepalive_timer)
     15 |          9 |        kswapd0 | schedule_timeout (process_timeout)
   1221 |          9 |      maenotify | schedule_hrtimeout_range (hrtimer_wakeup)
   1545 |          8 |        skyhost | sk_reset_timer (tcp_write_timer)
    793 |          8 |           ohmd | schedule_hrtimeout_range (hrtimer_wakeup)
    768 |          7 |            mce | tsc2005_start_scan (tsc2005_esd_timer_handler)
   1511 |          7 |telepathy-gabbl | schedule_hrtimeout_range (hrtimer_wakeup)
    500 |          7 |          mmcqd | cfq_completed_request (cfq_idle_slice_timer)
    858 |          7 |           Xorg | hrtimer_start (it_real_fn)
   1511 |          6 |telepathy-gabbl | sk_reset_timer (tcp_write_timer)
   1511 |          6 |telepathy-gabbl | sk_reset_timer (tcp_keepalive_timer)
      1 |          5 |  <kernel core> | inet_initpeers (peer_check_expire)
   1541 |          5 |        skyhost | futex_wait (hrtimer_wakeup)
   1548 |          4 |        skyhost | schedule_hrtimeout_range (hrtimer_wakeup)
     10 |          3 |    omap2_mcspi | inet_twsk_schedule (inet_twdr_hangman)
    897 |          3 | hald-addon-bme | schedule_hrtimeout_range (hrtimer_wakeup)
     15 |          3 |        kswapd0 | blk_plug_device (blk_unplug_timeout)
   1541 |          3 |        skyhost | start_this_handle (commit_timeout)
   1844 |          3 |        pdflush | blk_plug_device (blk_unplug_timeout)
   1011 |          2 |         python | schedule_timeout (process_timeout)
   1011 |          2 |         python | start_this_handle (commit_timeout)
    768 |          2 |            mce | schedule_timeout (process_timeout)
   5989 |          2 |       browserd | futex_wait (hrtimer_wakeup)
    768 |          2 |            mce | queue_delayed_work (delayed_work_timer_fn)
    743 |          2 |    dbus-daemon | schedule_hrtimeout_range (hrtimer_wakeup)
    858 |          2 |           Xorg | schedule_hrtimeout_range (hrtimer_wakeup)
   5993 |          2 |       browserd | futex_wait (hrtimer_wakeup)
   1144 |          2 |e-addressbook-f | start_this_handle (commit_timeout)
   1150 |          1 |       wlancond | schedule_timeout (process_timeout)
   1150 |          1 |       wlancond | queue_delayed_work (delayed_work_timer_fn)
   1340 |          1 |        browser | blk_plug_device (blk_unplug_timeout)
   1340 |          1 |        browser | schedule_timeout (process_timeout)
   1011 |          1 |         python | blk_plug_device (blk_unplug_timeout)
      1 |          1 |  <kernel core> | inet_frags_init (inet_frag_secret_rebuild)
      1 |          1 |  <kernel core> | flow_cache_init (flow_cache_new_hashrnd)
    710 |          1 |<kernel module> | inet_frags_init (inet_frag_secret_rebuild)
   1011 |          1 |         python | schedule_hrtimeout_range (hrtimer_wakeup)
   1353 |          1 |    temp-reaper | do_nanosleep (hrtimer_wakeup)
      1 |          1D|  <kernel core> | rt_secret_timer_init (rt_secret_rebuild)
    960 |          1 |    dbus-daemon | schedule_hrtimeout_range (hrtimer_wakeup)
    708 |          1 |           ntpd | schedule_hrtimeout_range (hrtimer_wakeup)
   1144 |          1 |e-addressbook-f | schedule_timeout (process_timeout)
   6360 |          1 |       powertop | do_nanosleep (hrtimer_wakeup)

Power domain activity breakdown
Domain  | % of time spent in states
--------+---------+---------+---------+---------+----------
usbhost |OFF: 100%|RET:   0%|INA:   0%| ON:   0%| now:(OFF)
    sgx |OFF:  99%|RET:   0%|INA:   0%| ON:   0%| now:(OFF)
    per |OFF:  79%|RET:  11%|INA:   0%| ON:   8%| now:(ON)
    dss |OFF:  91%|RET:   0%|INA:   0%| ON:   8%| now:(OFF)
    cam |OFF: 100%|RET:   0%|INA:   0%| ON:   0%| now:(OFF)
   core |OFF:  32%|RET:  42%|INA:  12%| ON:  12%| now:(ON)
   neon |OFF:  32%|RET:  48%|INA:  10%| ON:   8%| now:(ON)
    mpu |OFF:  32%|RET:  48%|INA:  10%| ON:   8%| now:(ON)
   iva2 |OFF: 100%|RET:   0%|INA:   0%| ON:   0%| now:(OFF)

Clock activity breakdown at end of period
Domain  | Active clocks
--------+---------------+---------------+------------------
   core |          SDRC | HSOTGUSB_IDLE |      OMAPCTRL 
        |     MAILBOXES |
   wkup |          GPT1 |       32KSYNC |         GPIO1 
        |          WDT1 |
  ckgen |          CORE |          PERI |           96M 
        |           48M |           12M |           54M 
        |      EMU_CORE |
    per |         GPIO2 |         GPIO3 |         GPIO4 
        |         GPIO5 |         GPIO6 |

Total wakeups  115160, 191.9/s | IRQ 98245, 163.7/s | Timers 16915,  28.2/s
HW wakeups      224,   0.4/s |     Real gp_timers expired  123,   0.2/s
Anyone able to see the problem ??
 
Posts: 650 | Thanked: 497 times | Joined on Oct 2008 @ Ghent, Belgium
#18
I get between 24 and 48 hours depending on usage, can be lower if my daughter wants to watch a movie

How I got that far:
- no wifi
- no 3G unless needed, so almost always GPRS
- swapiness hack (set to 30)
- overclocked to 500-805MHz and ideal profile

at night, I switch the n900 offline (flight mode).

During the day, I have 4 mail accounts checked every 15min, 2 IM accounts online and calendar/contacts synce every hour. Some websurfing, mail reading, 1 or 2 phone calls and some chat sessions.
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Gorgon's Avatar
Posts: 99 | Thanked: 28 times | Joined on Jun 2008 @ Philadelphia, PA
#19
I have noticed a similar decrease in battery life that has not been addressed by a reflash of image and eMMC. Haven't been able to track down what the issue is with this huge difference in power dissipation.
 
Posts: 208 | Thanked: 91 times | Joined on Jun 2010
#20
About 3 days with medium use using the swampiness changes, kiiling the indexing, killing apt update checking and clocked for 250Mhz-1GHz.

Hard usage (n64 games all full 1ghz) about 4-6 hours of play time.
 
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