External Monitor and LCD

[Elias Gerber <egerber at gmx dot net>]

Hello.

I would like to use my external Monitor (a Sony G400) and also the LCD of my 
Laptop. I would like to run the LCD of my Laptop at a resolution of 1400x1050 
and the external Monitor at a resolution of 1280x1024. The external Monitor 
should be placed LeftOf the LCD (for example so that i can have kmail open in 
one monitor and browse the net using firefox in the other one).

I am currently using xfree86 4.3 and fglrx 8.16.20 with Kernel 2.6.11.9 on an 
IBM Thinkpad T40p. The card I have is a Radeon Mobility 9000, the system is a 
Debian Sarge.

I tried doing so using the Option "Xinerama" in the xfree86-config file, but 
this seems to have no effect. I used:

Section "ServerLayout"
        Identifier      "Default Layout"
        Screen          "LCD"
        Screen          "EXTERNAL"
        Screen          "EXTERNAL" LeftOf "LCD"
        Option          "Xinerama"
        InputDevice     "Generic Keyboard"
        InputDevice     "Configured Mouse"
EndSection

But still my external monitor just shows me a clone of what is on the LCD, at 
a virtual resolution of 1400x1050.

Isn't it somehow possible to run an external monitor at a different resolution 
than the one used with the LCD?
If anyone could give me a hint, or maybe has a working setup of this and could 
send me a config-file I'dd be glad.

Thanks already in advance

Elias Gerber

-- 
Elias Gerber, egerber at gmx dot net
CH - Bern