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Date:	Tue, 29 Apr 2008 14:53:47 -0700
From:	Tom Brown <thomabrown@gmail.com >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: Video card initial resolution

Content Type: text/plain

FWIW department...

After finally speaking with a real person at AMD/ATI today AND doing some
additional research online, I have come to the following conclusion:

The answer appears to be that at this resolution, the data rate required to
support a resolution of 1920x1200 is in excess of what a single DVI channel can
support (165MHz), thus requiring a card with dual-link DVI. The Radeon 7200 is
apparently NOT in this category! This explains the fact that it works, sorta,
via the VGA interface which doesn't have the same clock restrictions as DVI.
There are just annoying little flashes and blinks, especially when displaying
text such as e-mail.

I need to replace the 7200 with something that supports Dual-link DVI, Radeon
X800 or better, from what I can now determine.

I am going for ATI Radeon due to support via SNAP and Panorama.

Tom Brown wrote:
> Video card: ATI Radeon 7200 Series (VGA and DVI)
> Monitor: Dell 2407WFP-HC (VGA and DVI) 1920 x 1200 @ 60 Hz resolution
>
> When I connect the monitor to the video card using the VGA connection,
> it works.
> Using the DVI connection, I get the following error from the monitor
> BEFORE any bios messages:
>
> Out of range signal.
> Cannot display this video mode.
> Change computer display to 1920x1200 @ 60Hz.
>
> This is not a driver issue, since even BM has not loaded yet. I am
> willing to get another video card, but I cannot be certain (in advance)
> what card will work, and I don't have the resources to keep trying until
> I find one!
>
> Any suggestions?
>
> Thanks!

--
Tom Brown, Catherder
thomabrown at gmail dot com
Member SCOUG, V.O.I.C.E., & SDAA

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