xserver-xorg-core (in SID) bumps video ABI version causing reported incompatibility with xserver-xorg-video-nvidia (affecting both SID/experimental packages).
Downgrade of relevant xserver-xorg packages of course is also workaround for this problem. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org