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I've been trying - without any success - to create a "virtual" display device configured for 16:9 ratio resolution..

I'm already past setting a kernel option (forgot what it was) for xorg to even start up without a physical display device connected to the display port.

Below is my xorg.conf. What i would basically like to achieve is a 16:9 resolution such as 1440x900 instead of all the 4:3 resolutions this configuration apparently provides ( despite the modes and metamodes defined below, i only get to choose 4:3 resolutions like 1024x768 )

Thanks much! Andras

ps: again, i have no physical display device.

pigeon@pigeon-desktop:~$ cat /etc/X11/xorg.conf
Section "Device"
Identifier "VNC Device"
Driver "vesa"
EndSection

Section "Screen"
Identifier "VNC Screen"
Device "VNC Device"
Monitor "VNC Monitor"
SubSection "Display"
Modes "1440x900 1440x900@61"
Option "MetaModes" "1440x900,1440x900; 1280x1024,1280x1024; 1024x768,1024x768" 
EndSubSection
EndSection

Section "Monitor"
Modeline "1440x900@61" 111.17 1440 1472 1888 1920 900 918 927 946
Identifier "VNC Monitor"
Option "nodpms"
Option "noddc"
Option "ModeValidation" "NoMaxPClkCheck;NoEdidMaxPClkCheck"
HorizSync 30-85
VertRefresh 48-120
DisplaySize 400 225
EndSection
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1 Answer

It sounds like you are attempting to run a headless server machine. If so, Driver "vesa" seems like a poor choice of drivers as I don't even know that 1440x900 is a valid mode.

You might want to look into a stright VNC server (like tightvncserver) or at least post the complaints from your Xorg.0.log.

share|improve this answer
    
Thanks for your reply. this is my video device 00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03) i tried loading the "intel" driver, however with the above configuration it is trying to EDID the non-existant monitor and fails to start log in next message –  pgn Jul 4 '10 at 13:24
    
(II) intel(0): Output VGA using monitor section VNC Monitor (II) intel(0): EDID for output VGA (II) intel(0): Output VGA disconnected (WW) intel(0): No outputs definitely connected, trying again... (II) intel(0): Output VGA disconnected (WW) intel(0): Unable to find initial modes (EE) intel(0): No valid modes. (II) UnloadModule: "intel" (II) UnloadModule: "vgahw" (II) Unloading /usr/lib/xorg/modules/libvgahw.so (EE) Screen(s) found, but none have a usable configuration. Fatal server error: no screens found –  pgn Jul 4 '10 at 13:24
    
Tip: blocks like that those last two comments are best edited into your original question, usually headed with update or added. I've got nothing much to offer beyond that you should be looking for the terms "virtual frame buffer" and "headless server" and "unbuntu or debian". It is hard for a driver to attach to hardware that doesn't exist. –  msw Jul 4 '10 at 13:51
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