Re: Using new Apple displays on Debian/Intel box?
On Fri, Feb 14, 2003 at 12:13:19AM -0600, Nathan E Norman wrote:
> On Wed, Feb 12, 2003 at 03:46:15PM +0000, Pigeon wrote:
> > On Tue, Feb 11, 2003 at 02:42:42AM -0700, Randolph S. Kahle wrote:
> > > I am looking at the new Apple displays (the 23" 1920x1200 display).
> > >
> > > What would I need to make this work on a Intel Pentium III box with an
> > > ASUS P2B-DS MB?
> > >
> > > Am I crazy to try this? I would clearly need a new graphics card to
> > > match the display.
> > >
> > > Would this be supported by the Debian distribution? XFree86 drivers?
> > >
> > > Randy
> >
> > AFAIK it is possible to get adaptors that enable you to connect a Mac
> > monitor to a VGA card.
> >
> > I suspect your main problem will be that the monitor won't understand
> > the signal it's getting until your system has booted far enough to
> > load something that changes the resolution from DOS-style 80x25 to
> > something that your monitor can cope with. This will probably mean
> > enabling framebuffer support, and having an ordinary monitor to swap
> > in if you have the need to diagnose booting problems at some future
> > date.
> >
> > As far as X is concerned you just need to set the appropriate values
> > for your monitor in XF86Config, and away you go.
> >
> > That's your other main problem, of course: extracting from Apple the
> > horizontal and vertical sync range that the monitor will accept.
>
> [ more fuel for the fire ]
>
> Don't Mac monitors require sync on green? Some graphics cards support
> that on a din-15 VGA port, other don't.
>
> If it's only Sun that's sync on green, sorry :-)
Some do, some don't, I think. I have built a VGA-to-Mac adaptor and
did indeed need to insert sync on green. On the other hand I have a
pinout list which includes a D15 Mac monitor connector with separate
sync.
If you buy an adaptor it SHOULD (yeah, that word) insert sync on green.
I half-remember the RGB levels being different as well, but I've lost
the circuit diagram now. Again, it is the job of a boughten adaptor to
sort that out.
Pigeon
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