Option "MacModel" (Re: [Bug 10418] Powerbook DVI out only works when booted with monitor attached)

[Alex Deucher]

On 10/17/07, Michel Dänzer <michel at tungstengraphics.com> wrote:
>
> [ Taking this off the bug report as it's getting OT there and cluttering
> it up ]
>
> On Wed, 2007-10-17 at 06:46 -0700, bugzilla-daemon at freedesktop.org wrote:
> >
> > ------- Comment #46 from sjoerd at luon.net  2007-10-17 06:49 PST -------
> > (In reply to comment #45)
> > > (In reply to comment #42)
> > > >
> > > > I've digged around google a bit. It seems that Powerbook5,1 to Powerbook5,5
> > > > have a single-link dvi output. Powerbook5,6 could be optionally build with
> > > > dual-link dvi but had single-link by default.. And Powerbook5,7 to Powerbook5,9
> > > > are all dual-link dvi.
> > >
> > > the question is, which ones use external tmds and which ones use internal tmds
> > > for single link dvi.  Unfortunately, "powerbook-duallink" is a bit of a
> > > misnomer.  I should have called it "powerbook-external".
> >
> > My powerbook5,2 definately uses an external tdms for single-link DVI..
>
> Interesting, any idea why they didn't use the internal TMDS even for
> single link?

I wondered that myself.  Probably to minimize the motherboard changes;
so they can use one motherboard and just solder a single or dual link
chip onto the same traces.

>
> > A friend of mine has a PowerBook3,5 and that uses an internal TDMS (MacModel
> > "powerbook" woks for him). So i'm pretty sure that all PowerBook5,X models have
> > an external tdms (either single or dual link). And PowerBook3,4 and PowerBook3,5
> > models have an internal tdms (Older powerbooks didn't have dvi out at all).
> >
> > See http://www.theapplemuseum.com/index.php for a list of all models. The info
> > about the 5,6 having optional dual-link comes from
> > http://developer.apple.com/documentation/Hardware/Developer_Notes/Macintosh_CPUs-G4/15inchPowerBookG4_Feb05/index.html?http://developer.apple.com/documentation/Hardware/Developer_Notes/Macintosh_CPUs-G4/15inchPowerBookG4_Feb05/1Overview/chapter_2_section_3.html
> > and http://www.macworld.com/news/2005/01/31/powerbook/index.php
>
> Thanks.
>
> So basically, it looks like:
>
> PowerBook5,*:           'powerbook-exttmds'
> PowerBook3,[45]:        'powerbook-inttmds'
>
>
> What about PowerBook3,3 (I forgot that didn't have DVI yet...)? I wonder
> if that works with "ibook" or has a different setup for VGA and S-video.
> Presumably the latter, as in contrast to iBooks they're separate
> connectors.

It's probably different than ibook; I think it works with the default
connector table.  They use the primary dac for vga as it has separate
tv and vga ports.  It's probably just like 3,[45] but with VGA instead
of DVI.

Alex