I don't actually know but I doubt this would be a software thing (changing 
the power, other than on or off).

On Sun, 4 Mar 2007, Ingo Rohloff wrote:

> Hello,
>
> I have got a mobile phone and I want to charge the battery
> of the phone via the USB port.
>
> Now when I tried that, it took ages to charge the battery and
> even after 12 Hours it still wasn't fully charged.
>
> I have heard that maybe the problem is, that the Hub of the PC must
> be configured to actuall deliver the 500mA max current which
> is allowed by the USB spec.
>
> Has someone a hint how this can be configured in linux ?
> (Is there a way to configure this via /proc or sysfs ?)
>
> with best regards
>  Ingo
>
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