intel driver and dual screen
Keith Sharp
kms at passback.co.uk
Fri Jan 18 08:15:21 UTC 2008
On Wed, 2008-01-16 at 11:00 -0500, Kristian Høgsberg wrote:
> One things that's not very well documented is that you need to tweak you
> xorg.conf for this to work. You need to add a Virtual line to the
> "Display" subsection in the "Screen" section of the xorg.conf file, for
> example:
>
> Section "Screen"
> Identifier "Screen0"
> Device "Videocard0"
> DefaultDepth 24
> SubSection "Display"
> Viewport 0 0
> Depth 24
> Virtual 3600 1200
> EndSubSection
> EndSection
>
> The exact resolution depends on the monitors you want to use, but it has
> to be big enough to hold both side by side. In my case, I have
> 1900x1200 and 1680x1050 monitors side by side, which gives me the
> numbers above.
I have a related issue on F9 - how do I persist the existence of my
second monitor?
I have a desktop with a dual head ATI graphics card[1], when I boot and
login the same image is shown on both monitors. Once I have logged in I
can run the command:
xrandr --output VGA-0 --left-of DVI-0
and that sets things up as I want them (Xinerama style). Despite much
googling I can find no way to make this persist. Can anyone offer any
suggestions? I've attached my xorg.conf file in case it is relevant.
Many thanks,
Keith.
[1] $ lspci | grep ATI
01:00.0 VGA compatible controller: ATI Technologies Inc RV370 5B60
[Radeon X300 (PCIE)]
01:00.1 Display controller: ATI Technologies Inc RV370 [Radeon X300SE]
-------------- next part --------------
# Xorg configuration for Xrandr based off the Intel web page:
# http://intellinuxgraphics.org/dualhead.html
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "gb"
EndSection
Section "Device"
Identifier "Videocard0"
Driver "radeon"
Option "VGA-0" "left"
Option "DVI-0" "right"
EndSection
Section "Monitor"
Identifier "left"
Option "PreferredMode" "1280x1024"
EndSection
Section "Monitor"
Identifier "right"
Option "PreferredMode" "1280x1024"
Option "RightOf" "left"
EndSection
Section "Screen"
Identifier "Default Screen"
Device "Videocard0"
Monitor "left"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "2560x1024"
Virtual 2560 2048
EndSubSection
EndSection
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