Help needed: connecting DVI TFT monitor to MGA G550 card

Wilkinson, Alex alex.wilkinson at
Tue Jun 7 23:12:25 GMT 2005

    0n Tue, Jun 07, 2005 at 11:50:52AM +0000, Christian Weisgerber wrote: 

    >Christian Gusenbauer <c47g at> wrote:
    >> Hmm, it seems to be so simple: take a DVI cable, connect it with the monitor 
    >> and the G550 card, start FreeBSD (current), change some settings in the 
    >> xorg.conf file and then start X.
    >> Well, I failed miserably :-(.
    >> The only resolutions working are 800x600 and 640x480 but the 1280x1024 I'd 
    >> like to get does not work.
    >I suffered a similar experience with a G450 PCI.  It is my understanding
    >that enabling high resolution modes on the DVI port requires some
    >extra fiddling in the driver, but Matrox provides no documentation
    >on this so XFree86/Xorg can't implement it.  Unless you can use the
    >proprietary drivers Matrox provides for some platforms, you're
    >effectively stuck with the analog VGA port.

Use the drivers matrox provide for linux:


Place mga_drv.o and mga_hal.drv.o into
/usr/X11R6/lib/modules/drivers/. Make sure you back up Xorg's mga
drivers first though !

 - aW

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