Re: issues with KVM switches

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On Mon, 4 Nov 2002, Brian York wrote:

>Date: Mon, 4 Nov 2002 16:18:41 -0500
>From: Brian York <YORKB@exchange.nku.edu>
>To: "RedHat Psyce list (psyche-list@redhat.com)" <psyche-list@redhat.com>
>Content-Type: multipart/alternative;
>	boundary="----_=_NextPart_001_01C28447.BFE3B170"
>List-Id: Discussion of Red Hat Linux 8.0 (Psyche) <psyche-list.redhat.com>
>Subject: issues with KVM switches
>
>Has anyone had any problems with redhat 8 and KVM switches? When I am
>working on another computer the switch back to rh8 box the keyboard doesn't
>respond. Has anyone else had this problem?

KVM switches can cause all sorts of problems.  They can corrupt 
the monitors DDC signal, preventing monitor plug and play, they 
can change the protocol your mouse uses, and they can corrupt 
both the mouse and the keyboard signal.  Also, some of them turn 
wheel mice into non-wheel mice.

Some KVM switches get things right, and actually work, and work 
well.  Others do not get things right, and totally screw things 
up.  As such, using a KVM is unsupported.  If it works, great, 
but if it does not, and the problem you encounter can not be 
reproduced by connecting the K, V, and M directly to the 
computer, then it is considered a KVM hardware bug, and is 
unsupported.

I have an ABL KVM (now owned by APC), and it works well, even 
with wheel mice.


-- 
Mike A. Harris		ftp://people.redhat.com/mharris
OS Systems Engineer
XFree86 maintainer
Red Hat Inc.



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