PowerMac G5 late 2005 - Nvidia GForce 6600 - only have X

[Mages Simon]

Hi,

i installed Xorg and Gnome2.

After that i stated gdm with /usr/local/etc/rc.d/gdm onestart without
success.

I used X -configure to create a xorg.conf and copied the file
to /etc/X11/.

After that gdm came up, but X only displays the halve of the gdm.

After that i used the NoAccel in the xorg.conf to fix that Problem with
the nv driver but without success.

Any Ideas?