xf86-video-ati-6.7.195, no DVI output

Alex Deucher alexdeucher at gmail.com
Mon Oct 22 15:44:50 PDT 2007

On 10/22/07, Giuliano Pochini <pochini at shiny.it> wrote:
> On Sun, 21 Oct 2007 17:12:15 -0400
> "Alex Deucher" <alexdeucher at gmail.com> wrote:
> > On 10/21/07, Giuliano Pochini <pochini at shiny.it> wrote:
> > >
> > > I compiled xorg-7.3 with xf86-video-ati-6.7.195 . I have an LCD display, but
> > > the driver detects it as attached to the VGA port. Is there a way to force
> > > it to use DVI-0 ?  I didn't try with a CRT, but I can test it if it matters.
> > >
> > > Linux Jay #3 SMP Sun Sep 16 15:39:49 CEST 2007 ppc 7455, altivec supported PowerMac3,6 GNU/Linux
> > > Radeon 9000pro
> > >
> >
> > Mac cards don't have a connector table so we don't usually know how
> > the ports are wired up.  You may need a custom connector table, but
> > I'm guessing the ddc lines are just reversed.  Can you post your xorg
> > log and tell me what ports your card has and which ones you are using?
> The card has two ports: a standard DVI and an weird Apple port, which is a
> DVI port plus power line AFAIK. The DVI port also provides analog outputs,
> so I used a simple adaptor to connect the VGA port of the same LCD display
> to the DVI port of the card.

Ah ok.  I think that's the same card benh was playing with last night.
 You are going to need completely custom connectortable.  remove the
the reverseddc option and try the following options.  We'll probably
have to sort out which dacs and ddc lines map to which ports.

go through these options and let me know which one works for you:

Option "ConnectorTable" "3,1,0,3,2,0,1,3"

Option "ConnectorTable" "3,0,0,3,2,1,1,3"

Option "ConnectorTable" "2,1,0,3,3,0,1,3"

Option "ConnectorTable" "2,0,0,3,3,1,1,3"

> >  In the mean time you may want to try the following option:
> >
> > Option "ReverseDDC" "true"
> That option actually makes things worse.
> - DVI port: I can't see anything. The log below was taken with ReverseDDC=false
> log: http://www.webalice.it/g_pochini/Xorg.0.log_DVI_noDDCrev
> - ReverseDDC=false and VGA port: It seems to work fine. The initialization
> issue I reported a few months ago is fixed ("flickering red channel").
> log: http://www.webalice.it/g_pochini/Xorg.0.log_VGA_noDDCrev
> - ReverseDDC=true and VGA port: Resolution is wrong (1024*768 instead of
> 1280*1024) and the monitor can't manage to display all the screen.
> log: http://www.webalice.it/g_pochini/Xorg.0.log_VGA_DDCrev
> In all cases the mouse pointer is rotated horizontally by half its width.
> For example: I see a "<>" in place of the X "><" cursor.

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