xf86-video-ati-6.7.195, no DVI output

[Alex Deucher]

On 10/26/07, James C. Georgas <jgeorgas at georgas.ca> wrote:
> On Fri, 2007-26-10 at 09:32 -0400, Alex Deucher wrote:
> > Is the edid mode actually bad or is it a result of the edid sync
> > polarity parsing bug in xserver 1.3?  If your edid is wrong, we should
> > add a quirk to it in the xserver so the bad mode(s) can be fixed up
> > automatically.  FWIW, I've fixed the IgnoreEDID option in the radeon
> > driver.
> >
>
> Well, I'm using git xorg, so I think it must be the EDID mode. I don't
> know how to read a hex EDID block, so I can't tell if the data is wrong,
> or if the driver is just parsing it wrong. It's only an issue with a
> digital signal. Analog is fine.
>
> When I first got the monitor, I tested it on a friend's Windows box, and
> I still saw the static and sync issues. I also tested a different brand
> of monitor, and the other monitor had no troubles with the same
> modeline. I tested the montior with an nvidia card, using the
> proprietary nvidia driver, and the nvidia driver reported EDID max
> pixclock as 155MHz, compared to 170MHz, reported by both radeon and
> fglrx.

The nvidia driver may have their own set of quirk handlers.

>
> I would expect the EDID data to have different pixclock ranges for
> analog and digital signals, but I haven't seen any server log output
> that indicates that this is the case.

you can feed your xorg log through edid-decode:
http://cgit.freedesktop.org/xorg/app/edid-decode/
to see the details of your edid.  The source is pretty simple so you
should be able to see how it works if you are interested.  grab an
xorg log using both dvi and vga to compare if the edids are different.

>
> In any case, I already posted some requested log output to the "Is
> IgnoreEdid broken?" thread, so that a quirk could be added for the
> Viewsonic VP201s.

Ah ok.  I'll take a look.

Alex