On Mon, 8 Jul 2002 21:01:00 -0500 (CDT), Daniel Picker <dp3@cec.wustl.edu>
wrote:

> 	I read some X FAQ's and I looked at xvditune, which told me my
> HORIZONTAL and VERTICAL where 640 X 480, i then looked in my XF86Config
> file to see if I could change those to 1024 x768 but no luck, I have
> pasted below the video section of the file

Daniel, 

To change modes, ctrl+alt+[+-] (the plus or minus key on the numeric
keypad).  The XFree86 SVGA driver writes a bunch of initialization stuff
to standard error on startup; it will tell you how many bpp you're using,
which will tell you which section of what "screen" you're using.  For
instance, if you're using 16 bpp, then:

 Section "Screen"
    Driver      "svga"
    Device      "NVIDIA Riva TNT2 (generic)"
    Monitor     "My Monitor"
[...]
    Subsection "Display"
        Depth       16
        Modes       "640x480" "800x600" "1024x768" "1280x1024"
        ViewPort    0 0
    EndSubsection

is the relevant section.  The default resolution is the first one (640 in
your case) that the driver determines it can support.  If you like to
start up in 1280, like I do, use:

      Modes        "1280x1024" "1024x768"

instead.

I think you are missing modelines in your XF86Config.  I have the Riva128,
which might be similar (don't know):

$ grep NVidia  ~/x.err
(--) SVGA: PCI: NVidia/SGS-Thomson Riva128 rev 16, Memory @ 0x9c000000,
0x9a000000

and my modelines (in Section "Monitor"):

$ grep Modeline  /etc/XF86Config |grep -v \#
   Modeline  "1024x768"   85.00 1024 1068 1188 1352   768  776  779  815
   Modeline "1280x1024"  185.64 1280 1376 1600 1800  1024 1024 1028 1079 

I understand XFree86 4.0 has much better HW detection, so less putzing is
needed.

HTH.

--jkl