powerbook: wrong image displayed in external screen

[Martin Pitt]

Hi Julio!

On 2004-10-01 21:52 +0200, Julio Herrero wrote:
> If I connect an external monitor via the DVI connector, the monitor
> image appears divided into randomly displayed squares... the effect is
> the same if I change the resolution of the powerbook screen.
> 
> The incredible thing is that the mouse cursor is neatly drawn...
> 
> The graphics card is an ATI Radeon mobility 9600.

I already dealt with this problem for several hours and tested dozens
of X configurations. If the internal screen is configured to use the
frame buffer interface, the external screen does not work. OTOH, if
the internal screen does not use the framebuffer, the external screen
works perfectly, but the internal one just flickers and does not look
very healthy.

I also tried several recipes from the net, all without success. So I
currently do not believe that it is possible to have an external
screen with the Open Source X driver. ATI's proprietary driver might
help, but 1) they do not offer it for ppc, and 2) it is a hell to
install.

If anybody could help this, I would spent her/him a couple of beers
:-)

Martin

-- 
Martin Pitt                       http://www.piware.de
Ubuntu Developer            http://www.ubuntulinux.org
Debian GNU/Linux Developer       http://www.debian.org
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