Re: mga g450 problem (please, help !!!)

On 2002-12-03, Serge Gavrilov <serge () pdmi ! ras ! ru> wrote:

> Today I tried to install new MGA G450 DualHead card into my box. The
> problem is following: only first 16M of video RAM is auto-detected by
> Xserver. If I force to use all 32M by adding of

>         VideoRam        32768

> to XF86Config-4, then I obtain corrupted screen (in vicinity of mouse
> cursor).

That sounds like one of many things I ran into recently when building a box
with an AGP Matrox 550 dual-head and two PCI Matrox 450 dual-head cards.

I experimented with the VideoRam flag; ended up not needing it, but I *did*
need 'Option "Crtc2Half" "True"' for all cards, or XFree would want to give
only 8MB or even 1MB to the second screens.

I also experienced mouse cursor corruption, but only on the first screen. 
For that, adding 'Option "SWcursor" "on"' worked around the problem.

--
Hank Leininger <[email protected]>