Raspberry Pi and powered USB hub

Tad tad at planetisuzoo.com
Fri Aug 24 22:36:00 CDT 2012

This may help:


On Fri, Aug 24, 2012 at 11:32 PM, Terry Fox <tfox at knology.net> wrote:
> I’ve received on of my Raspberry Pi boards, and am playing with it.  I have
> it controlling a Softrock Ensemble RxTx via the USB port.  However, I’ve
> noticed that for some reason whatever is plugged into the USB hub that I use
> to expand the number of USB ports periodically “goes away”, that is the
> keyboard, mouse, and whatever else stop working for a short period, then
> comes back to life.
> This happens with two different USB hubs, both are "”powered hubs” with
> separate power supplies.  The older one has LEDs that show enabled status,
> and those LEDs all go out at once whenever the problem occurs, then they
> light back up.  The newer hub (brand new) doesn’t have LEDs, but otherwise
> exhibits the same problem.
> I am using the powered hub for only the keyboard and mouse, and have tried
> different keyboards and mice (meeces).  So, I doubt there is a problem with
> too much current being drawn.  Both hubs work fine on a regular computer.
> Anybody else having problems with the Pi and powered hubs?
> Terry, WB4JFI
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