help with matrox parhelia 256Mb with dual head

Eric Ekong eric at
Fri Jul 1 21:34:57 GMT 2005

As far as I know there is no freebsd driver for the P-Series
of the Matrox card P650, P750, and Parhelia.  Everything I could
find points to using the downloadable driver.  The matrox driver for
these cards is mtx as opposed tot he mga/mga_hal/mgadrm.  

Mind sharing your xorg.conf just so I can compare.  I had Xinerama in
and with it in, my desktops just showed duplicates.

* Paul Schmehl <pauls at> [050701 17:12]:
> --On Friday, July 01, 2005 13:56:00 -0400 Eric Ekong <eric at> 
> wrote:
> >Initially the second monitor wasn't coming up at all. Now, with a
> >minor change or two, I have the second monitor coming up, but it seems
> >to bring up a second window manager that I have no access to..., the
> >second monitor just kinda sits there in the default kde start screen.
> >
> >That along with the fact that if I enable Xinerama, I lock up X to the
> >point where I can't drop to a virtual screen because the keyboard and
> >mouse lock up as well.  If I've gotten this far I must be only a step
> >or two away from getting this to work fully.
> >
> >Need is to have one desktop stretched across 2 monitors. Roughly
> >3200x1600 desktop.
> >
> >Do you have this working with the parhelia?
> No, I have a Radeon X300 card.
> > If so are you using Xorg
> >or XFree86 in ports.  I'm guess XFree86 would work in this setup
> >better, but it is just a hunch.
> >
> I'm using Xorg and Xinerama - two 19 inch monitors - one desktop.  The 
> problem that I have is that the right screen won't display until the system 
> goes to sleep.  So, when I first login, I change the setttings to get the 
> system to go to sleep in one minute, wait one minute, then move the mouse. 
> The right screen then works as long as I don't log out.  (Locking and 
> unlocking the screen works just fine.)
> But the problems you're having sound more driver related.  Was there a 
> reason you chose the Linux driver instead of the native FBSD one?
> Paul Schmehl (pauls at
> Adjunct Information Security Officer
> University of Texas at Dallas
> AVIEN Founding Member
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Eric I. Ekong                        eric at
FreeBSD - The Power to Serve           
K Desktop Environment on FreeBSD           

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