On Wed, Dec 30, 2009 at 12:40 AM, Hal <[email protected]> wrote:

> Ok, I guess all I really needed to do is shut off the G5 and unplug it for
> 20 minutes. That seems to have revived the ports. Is it possible to have
> overpowered the firewire bus and shut it down by plugging in 2 external
> drives (each with it's own AC adapter, none on bus power) and copying a few
> terabytes worth of backup data?
>
> --

This may sound far fetched so FWWIW, Do you live in an area experiencing
winter? Is the machine near a cold area, outside wall or window? At times
simple thermal states can cause poor circuit continuity just because the
metal is cold. Years of crud such as cigarette smoke, cooking fumes etc can
infiltrate the mechanical structure of the connection and be a factor also

Long time readers here know I preach the practice of looking at the simple
things first. Dirty, poor or loose connections are the place to look first
when talking I / O. Anyone who ever had a truck ignition fail on a frigid
day knows the fragility of circuit continuity is stressed further by
temperature differences.

So keep thinking along the lines of the " overpowered " idea for now. But if
that does not lead to a fix of the problem try cleaning and tightening the
connection.





Adrian D'Alessio aka; Fluxstringer

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