xf86-video-ati-6.7.195, no DVI output

James C. Georgas jgeorgas at georgas.ca
Thu Oct 25 17:15:42 PDT 2007

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

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?


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