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Date: Wed, 12 Dec 2001 22:06:25 +0100
From: Vojtech Pavlik <vojtech@suse.cz>
To: Johannes Erdfelt <johannes@erdfelt.com>
Cc: Jan Kasprzak <kas@informatics.muni.cz>, linux-kernel@vger.kernel.org
Subject: Re: USB mouse disconnect/reconnect
Message-ID: <20011212220625.A7346@suse.cz>
In-Reply-To: <20011211222014.A13443@informatics.muni.cz> <20011211164059.C8227@sventech.com> <20011212103748.C14688@informatics.muni.cz> <20011212112548.E29229@sventech.com> <20011212172940.O14688@informatics.muni.cz> <20011212114820.F29229@sventech.com> <20011212180333.V14688@informatics.muni.cz> <20011212125323.N8227@sventech.com>
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In-Reply-To: <20011212125323.N8227@sventech.com>; from johannes@erdfelt.com on Wed, Dec 12, 2001 at 12:53:23PM -0500
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On Wed, Dec 12, 2001 at 12:53:23PM -0500, Johannes Erdfelt wrote:
> On Wed, Dec 12, 2001, Jan Kasprzak <kas@informatics.muni.cz> wrote:
> > [l-k removed from Cc:]
> > 
> > Johannes Erdfelt wrote:
> > : 
> > : There's your problem with disconnects. Those are illegal per the specs.
> > : 
> > 	What is the maximum length?
> 
> I haven't looked at the spec lately, but I think 5 meters is the
> maximum. You can go longer if you use an active cable which is
> essentially a one port hub. It essentially acts as a repeater.

The problem with active cables is that they are very problematic as
well. The device plugged in isn't visible to Linux until the cable
itself is unplugged and replugged into the computer. I haven't found out
why yet.

-- 
Vojtech Pavlik
SuSE Labs
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