Apple M9179LL/A 30" Widescreen LCD with rv280

[Benjamin Herrenschmidt]

On Fri, 2005-02-25 at 20:54 -0500, Alex Deucher wrote:
> On Sat, 26 Feb 2005 12:19:37 +1100, Benjamin Herrenschmidt
> <benh at kernel.crashing.org> wrote:
> > On Fri, 2005-02-25 at 09:21 -0500, Alex Deucher wrote:
> > > On Fri, 25 Feb 2005 14:07:58 +0100, Esben Stien <b0ef at esben-stien.name> wrote:
> > > > I'm planning on getting the M9179LL/A; it's a Apple 30" Widescreen
> > > > LCD, http://www.apple.com/displays/ - probably Samsung or Viewsonic
> > > > OEM. If anyone knows please tell.
> > > >
> > > > I intend to run this with a rv280 gpu, Radeon 9250 on GNU/Linux. This
> > > > card features a single link DVI which is not sufficient to run the LCD
> > > > in native resolution, 2560x1600. I will run in 1280x800/1920x1200
> > > > until a card is out that is supported with libre software. I have seen
> > > > this monitor operate at 1280x800/1920x1200 and it's blurryness is
> > > > acceptable for a short term solution.
> > > >
> > >
> > > some of the newer ati r3/4xx cards have a dual-link tmds transmitter
> > > connected to the DVO port (the firegl v5000 or v5100 come to mind,
> > > perhaps some oems as well).  The driver should already support the
> > > external tmds transmitter, however, it may need some hacks to
> > > initialize it correctly in duallink mode.  If you had such a card, I
> > > can probably help you get dual-link mode up and running.
> > 
> > Do you know how to talk to the external transmitter at all ?
> 
> only via fp2_gen_cntl and friends.  however I think that's all you need.

Not sure... At one point, Hui was implying for example that we may have
flickering on the external TMDS because we can't properly configure it
for higher frequencies as we don't know how to talk to it. (The way we
configure the internal one via TMDS_TRANSMITTER_CNTL etc...)

Ben.