I went through a similar discussion on another mailing list. We were
using small Linux PCs ("Gumstix's") and under battery power it's
desirable to switch off USB peripherals. From what I recall it even
*appears* that there is an API call to do this, but that it doesn't
remove power.

-marc

On Fri, Mar 7, 2008 at 10:24 AM, hgraf <hgraf@email.com> wrote:
> Hello everyone,
>
>  I've got an "interesting" problem. I have a linux machine (Ubuntu 7.10)
>  with a USB device plugged into it, powered by the USB port.
>
>  There are cases where I'd like to cause the device to re-enumerate. The
>  easiest way is just unplugging it and plugging it back in.
>
>  Unfortunately since this machine must be remotely accessible I need a
>  way to do the equivalent through software.
>
>  Rebooting the machine is not an option.
>
>  Is there a call in Linux that will cause a USB port to shut down and
>  start up again? Alternatively is there a way to cause all of USB to
>  re-enumerate, through software?
>
>  I've tried google but can't seem to find what I'm looking for.
>
>  Thanks, TTYL
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