Friday, 4 November 2011

xorg problem--dual-head, Debian vs. Ubuntu

When using ATI Graphics Card under Ubuntu 11.10, there will be a problem when using dual monitor as follows:

"required virtual size does not fit available size: requested=(2560, 1024), minimum=(320, 200), maximum=(1280, 1280)"

The problem can be solved via this by editing the file "/etc/X11/xorg.conf":

xorg problem--dual-head, Debian vs. Ubuntu:

Now open that file in a text-editor and look for a "Screen" section to  which you add a "Display" section, as shown in this example I found on  the internet:  Section "Screen"         Identifier "Default Screen"         Device  "Intel Corporation Mobile 945GM/GMS, 943/940GML Express  Integrated Graphics Controller"         Monitor  "Generic Monitor"         DefaultDepth 24          SubSection "Display"             Depth  24             Modes  "1600x1200" "1280x1024" "1024x768" "800x600" "640x480"             # ADD A VIRTUAL LINE TO PROVIDE FOR THE LARGEST SCREENS YOU  WILL HOTPLUG             Virtual              2048 2048         EndSubSection     EndSection  Some more information is available on the man page (man xorg.conf).  From the error message you quoted, you may want to choose at least  Virtual 2680 1050  in your configuration.  Now save the file as /etc/X11/xorg.conf and restart X. Hopefully the  error is now gone. 

'via Blog this' qzone

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