Re: Cannot shutdown power use from built in webcam in thinkpad T530 questions]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, Sep 19, 2013 at 12:35 PM, Marc MERLIN <marc@xxxxxxxxxxx> wrote:
>
> gandalfthegreat:/sys/bus/usb/devices/3-1.6/power# grep . *
> active_duration:61227648
> async:enabled
> autosuspend:2
> autosuspend_delay_ms:2000
> connected_duration:66830880
> control:auto
> level:auto
> persist:1
> runtime_active_kids:0
> runtime_active_time:18870052
> runtime_enabled:enabled
> runtime_status:active
> runtime_suspended_time:5324088
> runtime_usage:0

The uvc device should have been put in auto-suspend state if no
application is using the device.  You can check if there is application
which is using the device by 'lsof | grep "/dev/video"'.

Also looks power usage estimation of 'power top' should be used
when battery provides power, and the data isn't correct if power is
provided from power adapter, if I remember correctly.

Thanks,
-- 
Ming Lei
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Input]     [Video for Linux]     [Gstreamer Embedded]     [Mplayer Users]     [Linux USB Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]
  Powered by Linux