I'm not sure what's up withe the redhat-list so I've sent this directly to
you guys as well.
Kevin, I have not tried the hardware trick of doubling the resolution - I
may not get to try it for a few days either.
Steve, would you mind asking your guys if they used the hardware trick or
the latest beta mga driver? The config fiel you sent makes me think it's
the driver, but your description sounds like the hardware trick.
I have had bad luck with the driver - I got it working, but it was
very unstable - see below for details.
On Fri, 29 Sep 2000, Gordon Messmer wrote:
> > So far, I have gotten as far as a single head setup working with XFree86
> > 4.0. It's 'XFree86 -configure' btw. Anyway, the problem seems to be that
> > XFree86 -scanpci only reveals one card and one bus id, where we need two!
>
> It should only show one. Differentiate the two heads on the card using
> the "screen" option in the config file. A working config file is
> attached, you can use it as an example, or drop it into place. Update it
> with your own mode lines if you do the latter.
Thanks. This is consistant with the one Steve sent me. Works too once I
heeded the following :)
> > So, has anyone gotten a dual headed config working with this card? Would
> > the real slim shady please stand up?
>
> Trick number two: The driver shipped with Red Hat doesn't support both
> heads. I don't know if you have the beta driver from Red Hat's site, but
> you'll need it. I had bad problems with it on my SMP machine. When I
> used XMMS, the kernel would complain about data not on an MTRR boundary,
> and lock up in not more than two minutes. I don't know if it's related to
> SMP or specific to the first beta driver (there have been a couple more
> releases), but I'd be interested in hearing your experiences.
aah. Now this made the difference. Once I installed the latest mga driver
I got it working! However, it kept locking up the machine. Even leaving
the machine idle it locked up. I also tried switching back to single head,
no xinerama and it locked up the machine.. I think I'm going to wait a
while:)
> > I'm starting to think this card wasn't such a good buy after all. It
> > appears the second monitor can only do 1280x1024 with true color anyway.
>
> DRI only works in 16bit color last time I checked, which is a limitation
> in the driver, not the hardware. Where did you get info on the max
> resolution? Is that a software limitation? I'm mostly certain that the
> hardware is capable of better, but the driver isn't quite done yet.
I don't remember - some thread I was following after doing a google
search.
With the driver I downloaded, 1280x1024 was indeed the highest the second
monitor was driven at. I guess two monitors at 1280x1024 is better than
one at 1600x1280, but I can't deal with this kind of instability. I have
not tried to rebuild XFree86 and this module from the source though. I'm
about to upgrade my hardware (but keeping this card) so I might consider
trying this once I get the new box up.
BTW, what is the best window manager for xinerama? sawfish certainly
didn't like it. I switched to enlightenment, but it seemed like gnome was
still trying to load sawfish as well. I tried KDE, but didn't really like
it.
thanks for all the help
charles
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