Screen Resolution on a Dell Inspiron 6400

Eberhard Roloff tuxebi at
Thu Sep 14 19:44:05 UTC 2006

> From: "Ralph Thaller" <ralph.thaller at>
> Subject: Screen Resolution on a Dell Inspiron 6400
> To: ubuntu-users at
> Message-ID:
> 	<bedffab20609141149r3d04ca7ao75d36348892930a8 at>
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Hi Ralph,

> Ralph Thaller wrote:  Hi!
> i have a dell inspiron 6400 with ubuntu linux.
> but i can only choose 1024x768 but the native adjustment is
> 1280x800. this is my xorg.conf:
> Section "Monitor"
>         Identifier      "Standardbildschirm"
>         Option          "DPMS"
>         HorizSync    31.5 - 90.0
>         VertRefresh  60.0 - 90.0
> EndSection
> Section "Screen"
>         Identifier      "Default Screen"
>         Device          "ATI Technologies, Inc. ATI Default
> Card" Monitor         "Standardbildschirm"
>         DefaultDepth    24
This means that 24bit is your default "color depth"

[...different color depth were in here...]
>                 Depth           16
>                 Modes           "1280x960" "1280x854"
> "1280x800" "1280x768" "1200x800" "1152x864" "1152x768"
> "1024x768" "800x600" "640x480" EndSubSection
>         SubSection "Display"
>                 Depth           24
>                 Modes           "1280x960" "1280x854"
> "1280x800" "1280x768" "1200x800" "1152x864" "1152x768"
> "1024x768" "800x600" "640x480" EndSubSection
> EndSection

This last one is about depth 24. Now delete  the first
two entries i.e. 1280x960 and 1280x854, setting your "real"
1280x800 to be the first entry.

restart X and see what happens.
If it does not work, imho you should readjust your X
configuration by the usual sudo dpkg-reconfigure xserver-xorg
and simply follow the on screen questions.
Remember to always!!! make a backup of your current xorg.conf
before changing anything, just in case. 

> has anyone an idea how i can choose a higher resolution?
I hope so ;-)


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