Hello,
I'd like to give a little background info taken from user discussion on our irc support channel (You are welcome to stop by on irc.oftc.net, and meet with the community on either international channel #siduction or german channel #siduction-de . Beginners: You only need to start "siduction-irc").
The package xserver-xorg depends on "xserver-xorg-video-all | xorg-driver-video" (amongst others). Xserver-xorg-video-
all is a metapackage that depends on all other driver packages. This breaks as soon as one single packagage misses.
So the second alternative is the way to go: siduction comes with some selected drivers and each of them provides the virtual package xorg-driver-video. At the moment all of theese drivers are neither installable nor upgradeable, so we see breakage and need to wait.
There is
one exception: if you have installed one of the proprietary drivers (fglrx-driver or nvidia-driver), then the virtual package xserver-xorg-driver is provided by those. This leads to removal of all missing drivers.
remove xserver-xorg-video-ati (1:7.5.0-1) ...
remove xserver-xorg-video-fbdev (1:0.4.4-1+b2) ...
remove xserver-xorg-video-intel (2:2.21.15-2+b2) ...
remove xserver-xorg-video-mach64 (6.9.4-2) ...
remove xserver-xorg-video-mga (1:1.6.4-1) ...
remove xserver-xorg-video-nouveau (1:1.0.11-1) ...
remove xserver-xorg-video-r128 (6.9.2-1+b2) ...
remove xserver-xorg-video-radeon (1:7.5.0-1) ...
remove xserver-xorg-video-vesa (1:2.3.3-1+b3) ...
remove xserver-xorg-video-vmware (1:13.1.0-1) ...
You may continue and use proprietary driver, but i think you want to have the free drivers as a fallback (just in case ...). As soon as the drivers will be available again, you can reinstall the lost packages with
apt-get install xserver-xorg-video-{ati,fbdev,intel,mach64,mga,modesetting,nouveau,qxl,r128,radeon,vesa,vmware}
greetings
musca