Bug#389007: [Xorg-driver-ati] Bug#389007: Regression: Radeon 9200 powers off Apple Cinema Display connected via DVI

[Benjamin Herrenschmidt]

On Mon, 2006-09-25 at 10:02 +0200, Michel Dänzer wrote:

> Yes, although it might also make sense to try the current master and
> ati-1-0-branch heads.
> 
> > I tried this out.  All revisions built OK, but all caused the monitor to
> > power off.
> > 
> > Installing the old xserver-xorg-core and xserver-xorg-video-ati gives a
> > working setup.
> > 
> > I also tried using git-bisect with
> > git://anongit.freedesktop.org/git/xorg/xserver, but done of the
> > revisions would compile due to various type errors, I guess due to the
> > incompatible changes made since 7.0.
> 
> Did you try the server-1_1-branch? Maybe we could help you get past the
> errors if you posted them.
> 
> > Is there anything else I can do?
> 
> Some ideas:
> 
>       * Build 6.6.2 against xserver-xorg-dev 1.0 and see if that works.
>       * Look for any differences in the log files.

What monitor model is it precisely ? I fixed a problem at one point that
was causing exactly that behaviour on my Apple Cinema HD display. The
problem was that the driver was leaving the i2c lines used for DDC in
the high state. I put them back down at the end of the DDC procedure and
that fixed it. Now it's possible that this change got lost ...

Ben.