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Re: vlc-playing DVD won't display on external monitor

Quoting Michael Hennebry <hennebry web cs ndsu nodak edu>:

On Thu, 23 Oct 2008, Robert P. J. Day wrote:

Quoting "Robert P. J. Day" <rpjday crashcourse ca>:

ok, as a followup to my previous post, i slapped f9 on
my inspiron, then VLC and associated RPMs, popped in a DVD,
it plays nicely on the laptop.

then, connected an external (samsung WUXGA) flat-panel
monitor via DVI, and the entire laptop display is reflected
nicely on the monitor *except* for the actual DVD image in
the VLC window -- that just shows up as blank, either in
regular or fullscreen mode (in fullscreen mode, the entire
external display is blank, even while the movie is playing
on the laptop).

i'm no expert at video so, somehow, the DVD image is
not being passed out on DVI, while everything else is.
thoughts?  is there a VLC setting to tweak this?  this is
a dell inspiron 9200 so it's a fairly old system -- at
least a couple years.  but until now, running external
displays off that DVI port has worked just fine.  so
why is the DVD video content being treated this way?

I thhink that part of the problem is that the laptop is exporting a
framebuffer and the DVD image isn't going through that frame buffer.
Does the laptop use hardware acceleration?

  this is a mobility radeon 9600 M10 chip, and from Xorg.0.log,
i read that there is something called "xaa" acceleration (damn,
someone just walked off with the laptop).   in any event, i think
what i want is a utility to deactivate "LVDS" while leaving "DVI-0"
active, based on what i read from the X server log file.

  aticonfig?  something like that, i think.


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