I need to correct my previous false statement. I could not make the
Matrox G550 video board work with XP SP2 on Asus AV8 motherboard. My
experience was that if both are installed, it fails to boot. But it
works fine now, and the entire problem was my own error. There was
never anything wrong with the Matrox G550 video with AV8 and SP2.
I did not have the AV8 bios set to enable "PNP Operating System". I
think installing XP that way does not properly install the VIA CPU to
AGP Controller (Device Manager, System Devices), plus a few other VIA
entries there are missing too. It seems to work, and SP1 works, but SP2
does not boot that way. I think this was my entire problem with SP2,
and the G550 was simply a victim of my error.
After correcting the PNP Operating System setting, then a clean XP
install into a new partition had no problem at all with G550 and SP2.
It all simply just works fine.
But the previous XP system still would not boot after SP2 (SP2 had to
be removed to boot). But it had no VIA CPU to AGP Controller entry (and
other VIA entries were missing too). XP installs this VIA stuff
itself, and I refer to that, and not to the AV8 CD VIA drivers. XP
already does that, but didnt in my case. Perhaps these were missing
because of the wrong PNP OS switch? (dont know why).
But I could see the working XP install had them, and the one that
wouldnt boot with SP2 didnt, so I installed the newest 4.55 VIA chip
set drivers from their site, specifically including the AGP driver. It
is said that 4.55 omits AGP, which possibly might be true if SP2 is
already installed (dunno again), but 4.55 definitely offers and
installs AGP if SP1, and it made all the difference for me. I wouldnt
have needed that if XP had done it, and XP would have done it if I had
enabled PNP OS properly (I think).
Anyway, after enabling PNP OS, and after providing the missing VIA CPU
to APC controller that was missing, then SP2 installs and works fine
with the AV8 and Matrox G550. Absolutely no sign of any probem now.
I'm very pleased with the G550 video board now. However it may need a
smarter user than me.
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