On Fri, 2008-03-07 at 11:36 -0800, Alex Harford wrote:
> On Fri, Mar 7, 2008 at 8:37 AM, Martin <martin@nnytech.net> wrote:
> >
> >  You have to reload the driver kernel module for the device or possibly
> >  the USB bridge.
> >
> >  You can't shut off power to a USB port through software. (correct me if
> >  I'm wrong)
> 
> In Linux or in general?  I thought this is how Windows does the
> 'Safely Remove Device'.  If you have a flash drive in there with an
> LED, the LED goes out, even though it is still plugged in.
> 
> There should be a file called state in a subdir like
> /sys/bus/usb/devices/1-0:1.0/power, and:
> echo "2" > /sys/bus/usb/devices/1-0:1.0/power/state
> is supposed to power it off.  But on my system (2.6.23) the state file
> does not exist. :(

That would be perfect! Unfortunately, while the state file exists (it
contains 0) writing 2 to it appears to do nothing. Do you have more
information on this mechanism?

Thanks, TTYL
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist