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Old 4th March 2009, 05:15 PM
bob2 Offline
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Join Date: Mar 2009
Posts: 3
nvidia and matrox dual-headed display

Greetings,

I've trolled the forums (and the internet) for a few days now and I'm having trouble finding any useful solutions....apologies if my issue is solved elsewhere.

Anyhow, I've been using an onboard graphics card for my desktop running Fedora 10. I recently installed an nvidia agp card, which was working fine (the onboard is auto-disabled). I then installed a matrox pci card, but have had no luck getting both screens working. The monitor connecting to the matrox card has a scrambled display, and the monitor connecting to the nvidia card displays the blue bar seen at startup.

some info:

Code:
[root@host ~]# lspci | grep VGA
01:00.0 VGA compatible controller: nVidia Corporation NV34 [GeForce FX 5200] (rev a1)
02:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G400/G450 (rev 85)
when i run "X -configure", it mentions that i have a dual-headed system. when i run X -config /root/xorg.conf.new, i see the matrox-garbled screen and the nvidia screen has a checkered white and black pattern...and doesnt do anything. i see the following errors:

Code:
(EE) MGA(0): Cannot read V_BIOS (3) Input/output error
(EE) MGA(0): Cannot read V_BIOS (3) Input/output error

thanks in advance for any help
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Tags
display, dualheaded, matrox, nvidia

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