xf86-video-ati randr-1.2 branch on PowerBook5,4 with RV350

[Sjoerd Simons]

On Thu, Aug 30, 2007 at 10:13:34AM +0200, Michel Dänzer wrote:
> On Thu, 2007-08-30 at 09:57 +0200, Sjoerd Simons wrote:
> > 
> > Michel is right though. These models have an external TDMS for DVI, but it
> > seems the VGA parts of the DVI connector are run of the internal one (does that
> > make sense?).
> 
> Not quite I'm afraid. :) The digital part of the DVI connector can be
> driven by the internal or an external TMDS.
> 
> > When using "powerbook-duallink" my DVI->VGA does work, but when running
> > xrandr without options or starting an app using XV the external screen
> > blanks momentarily.. Which is not the case when using "powerbook"
> 
> That may be expected.

So it's something non-TDMS related that causes these problem when trying
powerbook-duallink

> Does Apple's documentation claim that your model
> is capable of driving a 30" cinema display? If so, I think the DVI
> connector must use the external dual-link TMDS.

It's not. According to the documentation the maximum digital resolution is
1920x1200. But i'm pretty sure it uses an external TDMS (although not a
dual-link one, i talked to it via i2c
trying to get my digital output to work), see
http://bugs.freedesktop.org/show_bug.cgi?id=10418600 for more info.

  Sjoerd
-- 
Always draw your curves, then plot your reading.