Package: xserver-xorg-video-nv Version: 1:2.1.20-2 Severity: grave Justification: renders package unusable Hi, your package needs an update for the transition to xorg-server 1.16 which happened in July. https://packages.qa.debian.org/x/xserver-xorg-video-nv/news/20140715T163918Z.html Your package is currently in unstable only, and uninstallable. Mraw, KiBi.