Xorg config for dual-monitor Matrox Parhelia

[JB]

Alex <mysqlstudent <at> gmail.com> writes:

> ... 
> Here is the Xorg.log output:
> 
> (--) PCI:*(0:3:0:0) 102b:0527:102b:0840 Matrox Graphics, Inc. MGA
> Parhelia AGP rev 3, Mem @ 0xd8000000/134217728, 0xe1000000/8192, BIOS
> @ 0x????????/131072
> Kernel command line: ro root=/dev/mapper/vg_alexdesktop-lv_root
> nomodeset LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc
> KEYTABLE=us rhgb nouveau.modeset=0 rdblacklist=nouveau

In /etc/grub.conf:

> nomodeset LANG= ....
Is Matrox supported by Kernel Mode Setting at all ?
Check if it is in there:
$ cat /lib/modules/`uname -r`/modules.modesetting
If not, leave it there; for that you should get /etc/X11/xorg.conf .

> ... nouveau.modeset=0 rdblacklist=nouveau
Why do you need this ?
 
> Using system-config-display, it properly recognizes the card, but
> won't let me configure the dual-head part.

$ lspci -v
$ man mga
$ xrandr
$ man xrandr
http://www.thinkwiki.org/wiki/Xorg_RandR_1.2
This is an example of how it is done for Nouveau:
http://nouveau.freedesktop.org/wiki/Randr12

search Google:
linux matrox parhelia
matrox dual head xrandr

> ...

JB