[vox-tech] X resolution problems

[Matt Roper]

On Tue, Jan 10, 2006 at 07:12:52PM -0500, Peter Jay Salzman wrote:
> 
> In xorg.conf:
> 
> 
> Section "Screen"
> 
>    Identifier  "Default Screen"
>    Device      "Intel Corporation 82865G Integrated Graphics Device"
>    Monitor     "Generic Monitor"
>    DefaultDepth   24
> 
>    SubSection "Display"
>       Depth    24
>       Modes    "1280x1024" "1152x864" "1024x768" "800x600" "640x480" "320x200"
>    EndSubSection
> 
>    SubSection "Display"
>       Depth    16
>       #Virtual 1024 768
>       Modes    "320x240" "800x600" "1280x1024" "1024x768" "1280x960" "800x600"
>    EndSubSection
> 
> EndSection
> 
> 
> The problem is that when I switch to 320x200, the screen displays a
> viewport, 320x240 in size, looking onto a 1280x1024 desktop.  In other
> words, the resolution is native 1280x1024, but only a 320x200 piece of it
> shows.  The rest of the screen is a very large black border.
> 
> When X starts, I see the following message:
> 
>    (1152x864,Generic Monitor) mode clock 100000MHz exceeds DDC maximum 140MHz
>    (320x200,Generic Monitor) mode clock 100000MHz exceeds DDC maximum 140MHz
>    (1600x1200,Generic Monitor) mode clock 162MHz exceeds DDC maximum 140MHz
> 
> I'm curious how a monitor that can display 1280x1024 has trouble displaying
> 320x200.  I *really* would like 320x200 so I can play scummvm at full
> screen.
> 
> Any hints/ideas on how to force this particular resolution?
> 

Hi Pete.  When you say that you're switching your screen size, how
exactly are you doing that?  Are you using the xrandr command or are
you using Ctrl-Alt-+ and Ctrl-Alt--?  The second way only changes your
viewport size and your desktop will always remain the same size, but
using the xrandr allows you to actually change the size of your desktop.
Assuming you're not already using xrandr, type "xrandr" to get a summary
of the available resolutions, then do

    xrandr -s 320x200

to switch.

I believe (although I haven't used it enough to say for sure) that you
don't need to list the resolutions you want to use in your xorg.conf
file.  Those are only necessary for changing between viewport sizes with
Ctrl-Alt-{+/-}.

Hope that helps.


Matt

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