[time-nuts] LH Z3801 and XP stalling

[jimlux]

On 12/15/16 7:08 PM, Chuck Harris wrote:
> Sometimes, when one is doing a long run that goes past the
> usual power save times, the USB port will shut itself off.
>
> I believe that most motherboards have a setting in the BIOS
> that controls the ability of the BIOS to power the USB port
> down during quiet times.
>

More likely the OS configures the USB hardware.  On Win 7 (but probably 
also anything from WinXP on, if not before) there's a whole bunch of 
command line tools (or you can use Device Manager) to deal with the 
incredible complex power state behavior of USB devices, and more 
particularly hubs.


devcon is the command line tool here
  http://support.microsoft.com/kb/311272

More info at:
http://www.fixedbyvonnie.com/2013/11/fix-usb-root-hub-power-management-issue-windows-7/

and at:
http://support.microsoft.com/kb/817900

devcon is the command line tool here
  http://support.microsoft.com/kb/311272