Bug#444223: xserver-xorg-video-ati: RS480 (radeon express X200G series): display goes to sleep after upgrade to latest unstable/sid

[Alex Deucher]

On 9/27/07, Junichi Uekawa <dancer at netfort.gr.jp> wrote:
> Hi,
>
> > > I've tried unstable and experimental versions, but the display goes to
> > > sleep after starting up X, and I see nothing.  I can enter username /
> > > password in what is probably a gdm login screen, and I can hear disk
> > > activity, so I assume it starts and it thinks it's running.
> > >
> >
> > Is this a laptop?  What outputs does it actually have and which are in
> > use?  It looks like it has a bogus connector table, or some sort of
> > weird connector. As such the driver is probably lighting up the wrong
> > output.
>
>
> This is a desktop PC, hp dx5150MT.  It has DVI-out and D-sub analogue
> output; which DVI is connected to the display.
>

The connector table in your bios seems to be either broken or in some
currently unsupported format.  The following option should get things
working for you:

Option "ConnectorTable" "X,2,1,4,Y,1,2,2"

where X and Y numbers between 1 and 5 and are not  equal.  X and Y
specify the ddc lines for each connector, so if you want to get an
edid from your monitor, you'll need to figure out what line the
connector uses.

Alex