Need help to get VGA-to-TV working with Radeon 9250

Alex Deucher alexdeucher at gmail.com
Tue Jan 31 06:23:09 PST 2006


On 1/31/06, Sebastian <sebastian_ml at gmx.net> wrote:
> On Fr, Jan 27, 2006 at 09:38:18 -0500, Alex Deucher wrote:
> > you can definitely use both the DVI and the VGA port at the same time.
> >  you can either run as one big desktop (mergedfb or dualhead with
> > xinerama) or as two independant heads (:0.0 and :0.1) where only the
> > mouse moves between them or cloned with each crtc drving a head with
> > different timings. If you actually have a dvi monitor attached to the
> > DVI port, you'll need set the primary crtc to TMDS (digital output),
> > not CRT (analog DAC). so for clone or dualhead you'd need to have
> > monitorlayout set to "TMDS, CRT" this assumes you will be using both
> > heads at once.  If you try and use clone mode, it probably won't work
> > since your digital monitor will probably not like a weird interlaced
> > mode.  In that case you'll have to set up a mode the panel does like
> > and then set up metamodes (see radeon man page) to drive the panel and
> > tv cable with different timings.
> >
> > Alex
> >
>
> Hi Alex,
>
> I still would like to be able to disable DVI and just use VGA while the
> DVI cable is still plugged in. I saw your "superpatch" in bugzilla and
> thought I should try it out because you wrote that you have fixed various
> issues with the driver.
> I compiled X from CVS but somehow couldn't get it going. I reinstalled
> modular xorg afterwards and just copied over the *_drv.so files.
> It didn't fix my issues, though :( Well, at least I tried.

Did you actually get it patched an built?  If so try enabling the
"reversedisplays" (IIRC) option.  this will swap the crtc output
mapping.

Alex

>
> Sebastian
>
> --
> "When the going gets weird, the weird turn pro." (HST)
>
>



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