Re: [gentoo-user] KVM problems - anyone know _why_ it happens?

["G.Wolfe Woodbury" <redwolfe@gmail.com>]

On 01/22/2012 12:42 PM, Mark Knecht wrote:
> I played a bit with get-edid | parse-edid. Logically that stuff even 
> working says the VGA monitor cable is bidirectional. I started 
> wondering if the KVM messes up the data coming back, or what else 
> might be going on. Thanks for the ideas, Mark 
Many of the cheap KVM models do, indeed, mess up the EDID data coming 
from the monitor.  I suspect that this is from old design specs that 
have too much pull-up/pull-down on the EDID lead since the boxen haven 
been re-engineered for newer, higher resolution and higher speed monitors.

I have had problems specifically with the BELKIN KVMs.

It may also be that the video drivers for Linux are just enough 
different (necessarily) from the MSFT drivers to not reliably sense the 
EDID return signals.

I did as others suggested and tried several until I found one that 
worked.  Sometimes a slightly different model/serial/part no KVM from 
the same manufacturer would/wouldn't work.

-- 
G.Wolfe Woodbury
redwolfe@gmail.com