DVI output not visible on LCD with DVI, VGA output works -- (MergedFB on Ubuntu Edgy, Powerbook G4 ATI radeon 9600 M10)

Alex Deucher alexdeucher at gmail.com
Wed Jan 3 11:36:54 PST 2007

On 1/3/07, Martin Langhoff <martin.langhoff at gmail.com> wrote:
> Alex,
> thanks for the top-notch info. A few questions follow
> On 1/4/07, Alex Deucher <alexdeucher at gmail.com> wrote:
> > You need the radeon driver from git to support LVDS and DVI
> > simultaneously (Option "MonitorLayout" "LVDS, TMDS").
> > of the driver had hard-coded output to crtc mappings.
> Which git branch? From Edgy I have v6.6.2 (and I was already using
> that exact option ;-) so I'm hopefully not so lost). Last night I got
> a checkout. Checking gitk ati-6_6_2..ati_6_6_3 doesn't really show
> much, and the two patches on top of that on the ati-6.6-branch don't
> seem related either.
> Should I be looking at master? I do see a patch from you there that
> looks more promising "radeon: make DVI_I default connector". Is the
> branch in working state?

You want master.

> I am looking at how to build just this driver following this guide.
> Hopefully it's the right one...
> http://wiki.x.org/wiki/ModularDevelopersGuide#head-539708fdedddd7994203e866475f03b5b16d38eb

yes.  Although all you really need to do is grab the xorg devel
packages and then you can just download the driver with git and build
it directly without rebuilding the whole xserver.

> [ And the strange thing is... it seems to run well with the monitor at
> work over DVI. So I am not 200% convinced it is a "DVI port is off"
> situation, but perhaps a "DVI signal is incorrect". ]

git head is only needed for using LVDS (internal laptop panel) and DVI
simulatiously.  OTOH, there are some other DVI related fixes that may
help so it's worth a try.


> cheers,
> martin

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