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Re: Incorrect refresh rate with i915 video on FC4



>You may experiment with different modelines and sync settings. On
>http://xtiming.sourceforge.net/cgi-bin/xtiming.pl I calculated >
>following modeline
> based on your refresh rate values (are they correct and match the
> display manual data?):

> Modeline "1280x1024 72" 147.56 1280 1312 1872 1904 1024 1044 1056 1076

> Alexander

Thanks for the reply Alexander,

I have also used that tool to come with a proper ModeLine value and no
luck. In fact the value that come out of that tool are way too high. I
tried that value you generated it was out of the frequency range. Here's
what the Monitor Specs are:

Horizontal: 30kHz to 81Khz
Vertical: 56Hz to 85Hz (XGA)
	  60Hz to 76Hz(SXGA)
Max Pixel Clock: 135Mhz

I futzed with gtf a little more and came up with mode line:

ModeLine "1280x1024" 137.62  1280 1368 1504 1728  1024 1025 1028 1069
+HSync +Vsync 

It work a tad better, but there's still a lot of shake and wobble going
on. Hooked up to my PowerBook or Windows, the display is crystal clear.
I should mention that this is an LCD display too. 

Ryan-




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