Re: new ibook?
Sven LUTHER wrote:
>
> On Thu, Jun 28, 2001 at 12:04:24PM +0200, Michel Dänzer wrote:
> > Sven LUTHER wrote:
> > >
> > > On Wed, Jun 27, 2001 at 06:09:50PM -0400, John Hughes wrote:
> > > > On Wednesday 27 June 2001 02:29, Peter Meilstrup wrote:
> > > > > Video -- it's a Rage Mobility 128 chip; I assume this is supported
> > > > > in the latest Xfree86? Is there the ability to switch from the
> > > > > internal display to the external (RGB/composite) connectors?
> > > >
> > > > Worked with 4.0....but I compiled 4.1 without a hitch. With 4.1 the
> > > > ati128 is supported AND accelerated plus support for DRI.
> > >
> > > So you tried it connecting an external monitor ?
> > >
> > > As MacOs only support mirroring, but the chip seems to be the same rage
> > > 128 mobility as the one in the TiBook, it should be able to output a
> > > second head also (altough it has only 8MB, right ?).
> > >
> > > So did you try it in Xinerama mode ? Or simply with two screens in the X
> > > layout section ?
> >
> > The r128 driver can't drive both heads independently yet. But as of 4.1.0,
> > you can choose between Panel or CRT only (which should allow to drive an
> > external monitor at high resolutions, unless Apple somehow crippled the
> > hardware) or mirroring.
>
> But it is only a software thingy, not a hardware imposibility, that is what
> i really wanted to know.
The chip can certainly do it, but maybe Apple artificially crippled it in the
iBooks? Let's not hope so.
> But then, if it don't work yet in X, then there must be another way to find
> out. BTW, i guess the problem is in the sharing of the accel engine, where a
> trick must be used like the 2nd head support in the G400, or the trick alan
> implemented to support the gamma on both permedia3 of the jeronimo 2000
> board.
Maybe I'm missing something, but I imagine sharing the accelerator between two
heads shouldn't be too hard. It's a single instance of the driver, and the
server is single threaded after all.
> What about work at the fbdve level ?
It would be hard if not impossible to use acceleration in X then, at least on
one head.
> Or a simple test program driving the second head independently from the
> first, but not doing usefull stuff, just to see it can work.
MockOS can drive both heads independently on my Pismo, I guess that's proof of
concept.
I don't really need that feature so I'm not going to work on it in the
foreseeable future. Someone else would have to.
--
Earthling Michel Dänzer (MrCooper) \ Debian GNU/Linux (powerpc) developer
CS student, Free Software enthusiast \ XFree86 and DRI project member
Reply to: