Thread (9 messages) flat view 9 messages, 8 authors, 2003-02-14

Re: VGA out/External Monitor on ibook 2

From: Michael Schmitz <hidden>
Date: 2003-02-10 16:24:21

quoted
Someone lately posted a message detailing the problem (either here or on
debian-powerpc): the hsync and vsync pulses appear to be OK (correct
frequency) but have a phase jitter.
Unless somebody else posted it too, that would be me. And I now realise
that it was based on your suggestion (on debian-powerpc) a year back!
Possible - I've suggested someone take a scope and debug this more than
once :-)
Owen asked: How was it using OFFB? The phase is steady with the OFFB.
quoted
Does that ring a bell with anyone
here? Does anyone know which PLL setting the hsync position is derived
from?

	Michael
Is it possible that the lcd and crt *have to be* on different
controllers? From what I understand,  OF and OSX set it up that way but we
Yep, that's entirely possible. Maybe we can't get the proper specs for
both on one controller.
don't. As I have no documentation, this is just  a conjecture.
Still I would like to do just that. But I am constrained by the lack of
documentation. Pointers anybody? Maybe people who desire a dual-head would
like to help :)
I'd talk to Michel Dänzer about this. The XFree people might have figured
something out on other (i386) architectures. XFree developers have access
to at least some ATI docs.

	Michael


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