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
Fri Jan 5 06:23:57 PST 2007

On 1/5/07, Martin Langhoff <martin.langhoff at gmail.com> wrote:
> On 1/5/07, Martin Langhoff <martin.langhoff at gmail.com> wrote:
> > Hmmmm. Ideas? ;-)
> I've been playing a bit more with this. With the code in git #master,
>  - i removed all hints in xorg.conf that I wanted a dualhead, even
> removed MergedFB
>  - it starts up a-ok in singlehead mode
>  - it starts up ok with a DVI ext monitor (no DVI signal though)
>  - it reliably segfaults if it finds the monitor attached via the
> DVI-VGA adapter (xorg.conf and log attached)
>  - as soon as I say MergedFB explicitly, I am back to X getting wedged
> and needing kill -9, the last line being  "No valid timing info from

I'll try and take a look this weekend.  I haven't updated my git tree
since before the holidays.  Can anyone else reproduce this?  Any
chance you could git bisect to find the change that causes the crash?

> I've also found this bug
> https://bugs.freedesktop.org/show_bug.cgi?id=3621 which tracks your
> patchseries and their merge into GIT. Interesting stuff!
> Alex -- is it all merged in? I can't get to
> http://gitweb.freedesktop.org/ to see if you have a dev tree of your
> own out there.

Yeah, pretty much.  I'm still working on the TV stuff.  I've had the
code written for a while, but it doesn't work.  I need to trace the
bios, but I haven't had time with the holidays.


> cheers
> martin

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