power usage

_saiko · 2008-05-27 10:36:37

hi,
it's me again
got hp8430 (Core Duo 2ghz)

when on battery i got.. judging from the acpi -V output at most 2hrs
checked on powertop and have ~200 interrupts <kernel IPI> : Rescheduling interrupts
power usage is ~25+ W
C0 (cpu running) ( 5.7%) 2.00 Ghz 0.0%
C1 0.0ms ( 0.0%) 1.67 Ghz 0.0%
C2 0.2ms ( 0.5%) 1333 Mhz 0.0%
C3 2.2ms (93.7%) 1000 Mhz 100.0%

tried using all the powertop tricks
used pm-powersave true option
monitor at min backlight...
also cpufreq is active

now i wonder... what's the problem?

i'm getting at least 2.5+ hrs while on windows

also what i noticed...
when i kill X and stay in console strictly... i have ~40 interrupts in total
yet power consumption stayed the same??

help please

Last edited by _saiko (2008-05-27 10:39:30)

bender02 · 2008-05-27 14:11:43

Have a look at *what* causes the interrupts in powertop. In my case it's mostly acpi, usb modules, wireless and such. If you're on battery and you don't need, say, usb, then unload the modules. It should decrease the consumption a bit.

Last edited by bender02 (2008-05-27 14:11:58)

_saiko · 2008-05-27 14:40:41

this is what i get:

Top causes for wakeups:
31.2% (257.0) <kernel IPI> : Rescheduling interrupts
29.2% (240.6) <interrupt> : PS/2 keyboard/mouse/touchpad
13.0% (106.6) <interrupt> : extra timer interrupt
12.0% ( 98.5) firefox-bin : schedule_timeout (process_timeout)
3.4% ( 27.7) <interrupt> : ahci, iwl3945
3.3% ( 27.5) firefox-bin : futex_wait (hrtimer_wakeup)

_saiko · 2008-11-01 02:56:18

i'm still having the problem
and sadly the laptop isn't usable with linux like this...
any advice or help would be greatly appreciated!

Arch Linux

#1 2008-05-27 10:36:37

power usage

#2 2008-05-27 14:11:43

Re: power usage

#3 2008-05-27 14:40:41

Re: power usage

#4 2008-11-01 02:56:18

Re: power usage

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