Subject: Re: how to use 2nd head on Matrox G400?
To: Jukka Salmi <j+nbsd@2007.salmi.ch>
From: Jochen Kunz <jkunz@unixag-kl.fh-kl.de>
List: tech-x11
Date: 02/18/2007 19:13:50
On Sun, 18 Feb 2007 15:59:29 +0100
Jukka Salmi <j+nbsd@2007.salmi.ch> wrote:

> on a NetBSD/i386 -current system running XFree86 4.5.0 I'd like to use
> the second head on a Matrox G400 card to get a dual head setup.
> According to mga(4) I need a HAL module to achieve this.
I used a G450 in dual head mode with the X11 supplied with NetBSD 3.0.
It didn't need the HAL, but it had several issues. The Xserver leeked
memory and required a restart every few days. Gama correction worked
only on the primary screen. The secondary screen could be driven in a
few fixed resolutions like 1024x768, 1280x1024, 1200x1600, while I
intended to use 1360x1024 on both screens. Finaly I gave up when I got a
"new" CRT that was capable of 1408x1056.

According to pcictl(8) my card is a:
001:00:0: Matrox MGA G400 AGP (VGA display, revision 0x85)
--=20


tsch=FC=DF,
       Jochen

Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/