From: odiug@limotoc.informatik.rwth-aachen.de (Guido Muesch) Subject: Re: X1.1 and ET4000 card Date: 8 Jul 1992 12:28:04 GMT
hedrick@dartagnan.rutgers.edu (Charles Hedrick) writes:
>toivo@ucs.uwa.OZ.AU (Toivo Pedaste) writes:
>>I have a noname VGA card (I think its called an ULTRA) which has clocks
>>25 28 32 and 36. Under X1.0 at 25MHz it produced a display about 1200x500,
>>under X1.1 I get a display about 600x500. This is presumably due to clock
>>doubling being turned on in X1.0 and turned off in X1.1.
>Could somebody say a bit more about clock doubling and all that? I
>found under 1.0 that I had to say "hiclock" to get my Cardinal 700
>card to work properly. I've tried all the hacks I can think of, and
>1.1 still needs hiclock. I have a feeling it would help for me
>to understand exactly what hiclock does and why.
Well, I think I have to add my own 0.02$. The latest SVGA cards have more
than 8 clocks. They get the other clocks by doubleing some of them. I
think this is done by another register. So the old X386 server did
not handle this register correctly, so that you always have the
doubled clocks. This was fixed by the 'vendor "hiclock"' patch.
Now the new X386 server should handle the additional clocks right.
I hope my explainations are right. (correct me if not)
Well, thats the point where I should tell what kind of problems I have.
I have a Tseng MegaEva /1024 and a fixed frequncy monitor (Qume 635).
With X11v1.0 I got 1024x768i (40Mhz clock) working without vendor hiclock.
with vendor hiclock I got 640x480, 800x600 and 856x630 working (25 and
38 Mhz I think) but 1024x786i with 40Mhz is squeezed in Y-direction.
Now I upgraded to the new server (X11v1.1). X386 finds now 16 clocks
instead of 8. But only the 800x600 resolution works fine (38Mhz). The
other resolutions 640x480 and 1024x768i are both sqeezed in Y-direction.
(640x480 in 25Mhz and 28Mhz make no difference). Does anybody have the
same problems? Any solutions?
Guido
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