sony-vaio-z-series team mailing list archive

[Norbert Preining <preining@xxxxxxxx>]

On Sa, 03 Sep 2011, Leonardo Rodriguez wrote:
> powertop reports 'no ACPI power usage estimate available', and   

Did you run powertop as root and *while* the AC is *UNPLUGGED*?

Is your powertop/etc uptodate?

> $cat /proc/acpi/battery/BAT1/state shows anywhere from 20Wh 30+Wh (idle)  
> on either speed or stamina mode. it never goes below 20Wh

Interesting ... I see only BAT0 not BAT1 ..?!?

> Using the Gnome cpu frequency applet and powertop I can the the cpu's  
> idling at 1.20 GHz. The applet seems to be working correctly.

That is fine.

> This looks different from yours:
>
> $ ls /sys/devices/platform/sony-laptop/

Well, because you have a different model. I don't have ALS on mine.

> als_backlight         als_defaults  als_lux      als_power             
> battery_care_limiter  handles        kbd_backlight_timeout  odd_power   
> speed_stamina  thermal_control   touchpad
> als_backlight_levels  als_kelvin    als_managed  battery_care_health   
> driver                kbd_backlight  modalias               power       
> subsystem      thermal_profiles  uevent

So what do you want? You can use these handles to control practically
everything?!?! What are you searching for?

Cared to read the description of the files there in the package I provided?

> $sudo powertop

Ahhh, that is the old powertop, I actually prefer it over the new one ;-)

> Wakeups-from-idle per second : 511.8    interval: 15.0s

A bit high but not too bad.

>   31.0% (289.2)   [ahci] <interrupt>

Are you doing disk intense operation? If yes, then you cannot expect the
power usage to go down to 10W. For that you need to have *everyting*
in memory and don't save to disk.

Best wishes

Norbert
------------------------------------------------------------------------
Norbert Preining            preining@{jaist.ac.jp, logic.at, debian.org}
JAIST, Japan                                 TeX Live & Debian Developer
DSA: 0x09C5B094   fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
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