VIA KT400-A AGP 3.0 Support

From: Robert Toole (
Date: Wed Jul 09 2003 - 20:58:11 EST


I am wondering if anyone is currently working on a fix for AGP 3.0 on
the VIA KT400, KT400-A chipsets, and is looking for someone to test patches.

I am using a Gigabyte GA-7VAX-A board with the KT400-A chipset, and a
Matrox Marvel eTV Video card (G450). This is a 4X card, but it appears
to me that VIA removed AGP 2.0 support from the KT400-A.

As far as I can tell, although my videocard is 4X, according to
Giga-byte, the KT400-A supports only 4X and 8X cards using AGP 3.0 mode

I have tried the backport from the 2.5 tree that was posted a while ago,
and while it appeared to work, X crashed hard every time I ran a 3D app.

Thanks in advance,

Robert Toole

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