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Hello,

On Oct 21, 2006, at 07:42, Adrian Christiansen wrote:

> Now I've installed Xfree86 from the cd's sets, and tried to get it
> working... but I end up with a black screen at the best of times. I
> had to enter modelines in the Monitor section in order to get Xfree86
> to start at all. I calculated them with:
> http://xtiming.sourceforge.net/cgi-bin/xtiming.pl
> Based on the data I found on Apple.com

some iMacs have similar problems - the monitor works at a fixed 
horizontal frequency and is very picky about that.
change
HorizSync  	71.0-73.0
to
HorizSync	72
and get rid of the modelines. Maybe that will help, something similar 
works on G3 iMacs. You may also want to try different resolutions, for 
instance I got 1024x768 to work but not 800x600.
If that doesn't help try to generate a modeline that matches 72kHz 
horizontal as accurately as possible.
Finally - have a look at your XFree86.0.log - maybe the monitor reports 
its parameters and supported modes.

have fun
Michael
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