xf86-video-ati-6.7.195, no DVI output

[Alex Deucher]

On 10/25/07, James C. Georgas <jgeorgas at georgas.ca> wrote:
> On Thu, 2007-25-10 at 15:51 +0200, Giuliano Pochini wrote:
> >
> > On Thu, 25 Oct 2007, James C. Georgas wrote:
> >
> > > On Wed, 2007-24-10 at 21:20 +0200, Giuliano Pochini wrote:
> > >
> > >>>> - 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
> > >>
> > >> I'm sorry, but the flickering red channel problem is still here. At least
> > >> now we know that it only affects the DVI output.
> > >>
> > >
> > > Got some links to info about this bug? I haven't heard of it before.
> >
> > http://readlist.com/lists/lists.freedesktop.org/xorg/1/7345.html
> >
> > There is at least another person who has the same problem, but he told me
> > he couldn't workaround it with xvidtune. I can search for his email in my
> > archives if you need to talk with him.
> >
> >
>
> I find it interesting that the description of the red pixel static
> resembles the problem I have with my VP201s LCD when I drive it above
> 155 MHz on DVI-D. I believe it's a problem with the panel (i.e.
> incorrect EDID pixclock max), since I don't see the issue with other
> panels.
>
> BY the way, I tried his xvidtune fix, but I kept getting bad modeline
> errors, even with numbers that match the current mode. I guess this is
> another randr change?

Probably.  I haven't looked at xvidtune, but I suspect it's not randr
aware.  In theory it should work with the compatibility crtc, but I
haven't tested it.

Alex