On Tue, 2002-07-02 at 15:20, Alexander Kappes wrote:
> 
> I have a Dell Inspiron 8000 with an ATI Mobility M4 AGP (32 MB) and a TFT
> display with a resolution of 1600x1200. I'm running XFree86 4.2 from the
> SuSE8.0 CDs (2.4.18 Kernel).
> 
> Starting X with 1600x1200 is no problem. However, if I want to
> connect the laptop to a beamer I need lower resolutions, i.e. 800x600 and
> 1024x768, but no matter what I do it doesn't work. As you can see from
> my XF86Config file below I don't specify modelines and this works quite
> well for 1600x1200. However, if I change to 800x600 in the Screen section
> X discards all default 800x600 modes (either "vrefresh out of range" or
> "hsync out of range" or "bad mode clock/interlace/doublescan") and
> switches back to 1600x1200.
> 
> (A funny observation: If I increase the v- and hsync range I, indeed,
> additional default modes like 1280x1024 or 1280x960 are available but all
> with a dot clock of 160 MHz which of course then leads to v- and hync
> rates beyond the specified range for lower resolutions. BTW, using these
> modes also does not work, either the screen is corrupted (computer still
> works) or the screen becoms white and the computer hangs. Where do these
> default resolutions come from?)

man r128, Option "Display"


-- 
Earthling Michel D�nzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member   /  CS student, Free Software enthusiast
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