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Date:      Wed, 13 Sep 2000 10:54:10 +0930
From:      Greg Lehey <grog@lemis.com>
To:        gerti-freebsdq@bitart.com
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Matrox G400 & Xinerama works, but...
Message-ID:  <20000913105410.C47700@wantadilla.lemis.com>
In-Reply-To: <20000912203542.10013.qmail@camelot.bitart.com>; from gerti@bitart.com on Tue, Sep 12, 2000 at 03:35:41PM -0500
References:  <20000912203542.10013.qmail@camelot.bitart.com>

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On Tuesday, 12 September 2000 at 15:35:41 -0500, Gerd Knops wrote:
> Hello,
>
> This may be slightly off topic, but the X mailing lists don't seem to
> be very responsive:
>
> I am using FreeBSD 4.1S, X4.01, and Matrox's beta G400 drivers with a
> dual head setup using xinerama.
>
> I have 2 problems:
>
> 1) When using xinerama, there are redraw problems of widgets on the
> first screen only. There are vertical lines in the widget. Moving the
> mouse over a widget often creates or removes the problem in that
> widget. It happens independent on which window manager is used. Anyone
> else seen this? Or could it be a problem with the video ram on the
> card?

It's probably a bug in the driver.  You'll have to feed it back to the
X people.

> 2) I can't seem to get the second screen to run at a higher refresh
> rate. The first runs at 75Hz, the second at 60Hz (equivalent monitors
> and monitor configuration). The problem appears to be this:
>
>
> 	(==) MGA(0): Min pixel clock is 12 MHz
> 	(==) MGA(0): Max pixel clock is 300 MHz
> 	...
> 	(==) MGA(1): Min pixel clock is 12 MHz
> 	(==) MGA(1): Max pixel clock is 112 MHz
>
> Is there any way to configure MGA(1) with a higher max pixel clock? Or
> is this a problem with the driver or card?

That's a hardware maximum, unfortunately.  I have one of these cards
as well, and it makes it effectively useless to me (well, no more use
than a single-headed card).

Greg
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