Re: annoying frequent overcurrent messages.

From: Pavel Machek
Date: Thu Jul 13 2006 - 08:06:53 EST


Hi!

> > I have a box that's having its dmesg flooded with..
> >
> > hub 1-0:1.0: over-current change on port 1
> > hub 1-0:1.0: over-current change on port 2
> > hub 1-0:1.0: over-current change on port 1
> > hub 1-0:1.0: over-current change on port 2
> ...
>
> > over and over again..
> > The thing is, this box doesn't even have any USB devices connected to it,
> > so there's absolutely nothing I can do to remedy this.
>
> Well, overcurrent is a potentially dangerous situation. That's why it
> gets reported with dev_err priority.

Well, I see overcurrents all the time while doing suspend/resume...

Why is it dangerous? USB should survive plugging something that
connects +5V and ground. It may turn your machine off, but that should
be it...?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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