sony-vaio-z-series team mailing list archive

[Jon Young <jon@xxxxxxxxxxxxxxxxxxxx>]

An additional note that I don't think matters for my lack of usb power
saving but I'm set to static switching on speed mode.  I'm not sure
when this problem started - I had been getting ~10W usage not that
long ago.  It might have been the kubuntu precise upgrade when I
started experiencing this issue, it may have been later.

Help!  I'm getting terrible battery life.  Any ideas what may be
incorrectly configured so usb powersaving isn't working?
Thanks,
Jon

On Mon, Jun 25, 2012 at 12:15 AM, Jon Young <jon@xxxxxxxxxxxxxxxxxxxx> wrote:
> For some reason my usb devices aren't suspending properly killing my
> battery life.  Any suggestions? vpcz12 kubuntu 12.04 ppa kernel 3.4.
> Stock ubuntu kernel exhibits the same issue.
>
> From powertop:
> The battery reports a discharge rate of 17.7 W
>
> Summary: 568.6 wakeups/second,  0.0 GPU ops/second and 0.0 VFS ops/sec
>
> Power est.      Usage       Events/s    Category       Description
>  8.71 W    100.0%                      Device         USB device:
> Fingerprint Sensor    (TouchStrip        )
>  4.85 W    100.0%                      Device         Radio device: btusb
>  1.91 W     71.4%                      Device         Display backlight
>  1.60 W    100.0%                      Device         Display backlight
>
> All tunables are set to good.
>
> Thanks for any suggestions.
>
>
> On Fri, May 11, 2012 at 1:19 AM, Danilo Šegan <danilo@xxxxxxxxx> wrote:
>> У чет, 10. 05 2012. у 13:49 +0200, Danilo Šegan пише:
>>> У чет, 05. 04 2012. у 13:45 +0200, Reinhard Oldenburg пише:
>>> > Thanks for the two replies so far. They triggered me to install Bumblebee and swithcing to inteal graphivs with this  (and still the originl BIOS) I get power consumption of 13-15 W. This is not as low as others reported but acceptable (yielding 3h of time on battery). Maybe the i7-640M in my model is responsible for this.
>>>
>>> Screen brightness and bluetooth are the other big battery drainers for
>>> me.  Without sony-laptop module by Norbert I can't easily change the
>>> screen brightness.  Turning of bluetooth and 3g card (when not in use,
>>> of course), cuts down on a few watts as well.
>>
>> And don't forget the fingerprint reader: you can get your USB devices to
>> sleep with "powertop":
>>
>>  5.10 W    100,0%                      Device         Display backlight
>>  3.00 W    100,0%                      Device         Radio device:
>> iwlwifi
>>  2.47 W    100,0%                      Device         USB device:
>> Fingerprint S
>>  1.27 W    100,0%                      Device         Radio device:
>> btusb
>>
>> Cheers,
>> Danilo
>>
>>
>>
>> _______________________________________________
>> Mailing list: https://launchpad.net/~sony-vaio-z-series
>> Post to     : sony-vaio-z-series@xxxxxxxxxxxxxxxxxxx
>> Unsubscribe : https://launchpad.net/~sony-vaio-z-series
>> More help   : https://help.launchpad.net/ListHelp