[time-nuts] LH Z3801 and XP stalling

paul swed paulswedb at gmail.com
Fri Dec 16 10:11:50 EST 2016


Thanks everyone.
However on the dell laptop its an actual rs232 port. They used to include
those. :-)
I am thinking of trying a usb port to see if that works. It is all working
nicely on a acer windoze vista laptop.But the machine I normally use for
this stuff is the dell laptop.
Regards
Paul

On Fri, Dec 16, 2016 at 9:33 AM, Chuck Harris <cfharris at erols.com> wrote:

> A customer's 'doze 7 computer got auto updated to 'doze 10,
> and with that upgrade came a usb hub that timed out, turning
> itself off.... the only problem was, the keyboard and
> mouse were on that hub, leaving no way to signal the computer
> to turn the hub back on.  Ultimately, the customer found that
> if he unplugged the monitor, plug and pray would restore things.
> For a while.
>
> -Chuck Harris
>
> jimlux wrote:
> > 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
> >
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