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Date:      Wed, 6 Nov 2002 22:22:05 +0000
From:      Josef Karthauser <joe@FreeBSD.org>
To:        ticso@cicely.de
Cc:        Maksim Yevmenkin <myevmenk@exodus.net>, current@FreeBSD.org
Subject:   Re: USB problem (Who owns USB code in -current?)
Message-ID:  <20021106222205.GA15133@genius.tao.org.uk>
In-Reply-To: <20021106214349.GA47529@cicely8.cicely.de>
References:  <3DC6BD74.25097511@exodus.net> <20021106195542.GG46686@cicely8.cicely.de> <3DC982FB.35F1A33A@exodus.net> <20021106213316.GA13438@genius.tao.org.uk> <20021106214349.GA47529@cicely8.cicely.de>

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On Wed, Nov 06, 2002 at 10:43:50PM +0100, Bernd Walter wrote:
> On Wed, Nov 06, 2002 at 09:33:16PM +0000, Josef Karthauser wrote:

> > If it's inside the docking station I would assume that it's powered.
>=20
> Agreed - I had overread this detail.
>=20
> > On my machine with an external hub I do get messages about power budget
> > being exceeded so it's probably not that.
>=20
> That's a design issue.
> Some ports implement overcurrent protection by self healing fuses.
> Others do not even that.
> I've seen many awfull cheap implementations.
>=20
> Btw.:
> I had seen similar problems with a self build device on some ports.
> It turned out to be a problem with the device oscillator to not
> properly work under some conditions.

Hmm, ok.  Then this is the most likely explanation then.

Joe
--=20
Josef Karthauser (joe@tao.org.uk)	       http://www.josef-k.net/
FreeBSD (cvs meister, admin and hacker)     http://www.uk.FreeBSD.org/
Physics Particle Theory (student)   http://www.pact.cpes.sussex.ac.uk/
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D An eclectic mix of fact an=
d theory. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

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