Installation dependencies failure on sid

[jnqnfe <jnqnfe@gmail.com>]

tester@testPC:~$ sudo aptitude upgrade
Resolving dependencies...                
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 14 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.
                                         
tester@testPC:~$ sudo aptitude full-upgrade
The following packages will be upgraded: 
  xserver-xorg-core{b} xserver-xorg-video-ati xserver-xorg-video-fbdev 
  xserver-xorg-video-mga xserver-xorg-video-modesetting 
  xserver-xorg-video-nouveau xserver-xorg-video-openchrome 
  xserver-xorg-video-qxl xserver-xorg-video-radeon 
  xserver-xorg-video-sisusb xserver-xorg-video-tdfx 
  xserver-xorg-video-trident xserver-xorg-video-vesa 
  xserver-xorg-video-vmware 
14 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 4,947 kB of archives. After unpacking 297 kB will be freed.
The following packages have unmet dependencies:
 xserver-xorg-video-siliconmotion : Depends: xorg-video-abi-18 which is
a virtual package.
 xserver-xorg-video-savage : Depends: xorg-video-abi-18 which is a
virtual package.
 xserver-xorg-video-neomagic : Depends: xorg-video-abi-18 which is a
virtual package.
 xserver-xorg-core : Conflicts: xserver-xorg-video-modesetting but
0.9.0-1+b2 is to be installed.
 xserver-xorg-video-cirrus : Depends: xorg-video-abi-18 which is a
virtual package.
 xserver-xorg-video-intel : Depends: xorg-video-abi-18 which is a
virtual package.
 xserver-xorg-video-mach64 : Depends: xorg-video-abi-18 which is a
virtual package.
 xserver-xorg-video-r128 : Depends: xorg-video-abi-18 which is a virtual
package.
The following actions will resolve these dependencies:

      Remove the following packages:    
1)      task-desktop                    
2)      task-gnome-desktop              
3)      xserver-xorg-video-all          
4)      xserver-xorg-video-ati          
5)      xserver-xorg-video-cirrus       
6)      xserver-xorg-video-intel        
7)      xserver-xorg-video-mach64       
8)      xserver-xorg-video-modesetting  
9)      xserver-xorg-video-neomagic     
10)     xserver-xorg-video-r128         
11)     xserver-xorg-video-savage       
12)     xserver-xorg-video-siliconmotion



Accept this solution? [Y/n/q/?] q
Abandoning all efforts to resolve these dependencies.
Abort.