dual head support for Dell Latitude D630

Hello all,

I've been trying to get my Dell Latitude D630 with an Intel graphics
controller to display on an external monitor. I did manage to get it
to display the same as on the laptop but am told I can have the
external monitor display a separate desktop to the one visible on the
laptop (either with or without xinerama support is fine with me).

Can anybody help? I have attached my current xorg.conf file which
is based on one I found on the 'net.

Some detailed information follows below.

Finally, it may help somebody out there to know about one problem I
did manage to solve. Although X was running perfectly fine all along
(once I installed the 915resolution package), I could never switch to
a text virtual console (C-A-Fn) once X had started. Switching led to a
greenish display. Although nothing was visible, the console was
actually active and I could type blind... I could also get back to the
X system by A-F7.

In looking for a solution to the dual head display problem, I ran
across a solution to this problem: simply add the option 'vga=0x318'
to the boot kernel parameters.

Thanks,
eric

---------------------- details -----------------------
Xorg.0.log file extract for device:

Device "Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller"

My system is running Debian stable:

$ uname -a
Linux xxx 2.6.18-5-amd64 #1 SMP Tue Oct 2 20:37:02 UTC 2007 x86_64 GNU/Linux

Possibly relevant 'lscpi -v' output:

00:02.0 VGA compatible controller: Intel Corporation Mobile Integrated Graphics
Controller (rev 0c) (prog-if 00 [VGA])
Subsystem: Dell Unknown device 01f9
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at fea00000 (64-bit, non-prefetchable) [=1M]
Memory at e0000000 (64-bit, prefetchable) [=256M]
I/O ports at efe8 [=8]
Capabilities:

00:02.1 Display controller: Intel Corporation Mobile Integrated Graphics Control
ler (rev 0c)
Subsystem: Dell Unknown device 01f9
Flags: bus master, fast devsel, latency 0
Memory at feb00000 (64-bit, non-prefetchable) [=1M]
Capabilities:

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MC . -.. --- - ..-. .-. .- --. .- .- - ..- -.-. .-.. .- -.-. ..- -.-
NL Professor Eric S Fraga, Chemical Engineering, University College London
BF >++++++++++[>++++++++++>+++++++++++[<]>-]>++.>++++.<-----.++++++.------.

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