Hello,

I've a trident cyberblade i7 as vide card.
This is a dual head card (there's two vga out) connected to two screens (a 12" LCD and a classic 17")
And I try to configure it to have my desktop on the two (one half on each screen).

But I don't know how to do that.
I've search documentation but the only I found concern computers with two cards.

Does anyone know how to do or how to find documentation about it ?

Thanks in advance,
Yves

I am not sure but i think what you want to do is called Xinerama, and has to be configured in your XF86Conf file. Try a search on xinerama dual head and see what you come up with.
Hope that helps a bit
-NSKL

Hello,

In fact I've tried to do this with xinerama but it don't work too.

The problem I have is it's written (when I do a startx) that my device is used.

Finaly I suppose my driver don't support the dual head (but my card yes).

So if someone wants to write a new driver for a trident cyberblade i7 with the support of dual head, I'm OK to test it...

bye,
Yves

it's probably supported, but i wouldn't recommend xinerama... bit poor i think. what i use is just a basic dual head configuration, manually set up in XF86Config:

============================
Section "Device"
Identifier "SiS 6326 1"
VendorName ""
BoardName ""
Driver "sis"
Option "DPMS" "on"
BusID "PCI:0:9:0"
Option "sw_cursor"
Option "videoram" "8192"
EndSection

Section "Device"
Identifier "NVIDIA GeForce2 DDR (generic) 2"
VendorName ""
BoardName ""
Driver "nvidia"
Option "DPMS" "on"
BusID "PCI:1:0:0"
# Option "sw_cursor"
EndSection
=============================
Section "ServerLayout"
Identifier "both"
Screen "screen1"
Screen "screen2" LeftOf "screen1"
InputDevice "Mouse1" "CorePointer"
InputDevice "Keyboard1" "CoreKeyboard"
EndSection
=========================

a few relelvant excerpts. the only big difference you have s that both outputs are on the same card, and i'm not totally sure how you address them specifically, but it's certainly possible. have a root around a few howto's and free86.org

I have something like this :

Section "Device"
Identifier "trident1"
VendorName ""
BoardName ""
Driver "trident"
Option "DPMS" "on"
BusID "PCI:1:0:0"
Screen 0
EndSection

Section "Device"
Identifier "trident2"
VendorName ""
BoardName ""
Driver "trident"
Option "DPMS" "on"
BusID "PCI:1:0:0"
Screen 1
EndSection

Section "ServerLayout"
Identifier "layout"
Screen "screen1"
Screen "screen2" RightOf "screen1"
InputDevice "Mouse1" "CorePointer"
InputDevice "Keyboard1" "CoreKeyboard"
EndSection

This configuration work on a matrox g450 (dual head card, with two vga output)

But it don't work for me

Do you know where I can ask to someone try to write a good driver (perhaps it can interest other people...) ?

bye,
Yves

well all i can suggest is to try changing round the screen numbers etc. start screen2 and then add screen1 maybe...

Acid_Kewpie: With the configuration you have, do you have two seperate X sessions on each screen or one X session with the desktop that spans over the two physical screens?
Am i making sense?
Thanks
-NSKL

This is on a separate thread, but Kewp was so kind as to make public his whole honkin' XF86Config file for a dual head, two card, no xinerama set-up:

http://cakenet.dynu.com/dualhead

Cheers,

Finegan