Package: virtualbox-guest-x11 Version: 5.1.10-dfsg-1 -- LANG=C apt install virtualbox-guest-x11 Reading package lists... Building dependency tree... Reading state information... Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation:
The following packages have unmet dependencies: virtualbox-guest-x11 : Depends: xorg-video-abi-20 but it is not installable -- LANG=C apt-cache policy xserver-xorg-core xserver-xorg-core: Installed: 2:1.19.0-2 Candidate: 2:1.19.0-2 Version table: *** 2:1.19.0-2 500 500 http://ftp.de.debian.org/debian unstable/main i386 Packages 100 /var/lib/dpkg/status -- LANG=C apt-cache show xserver-xorg-core | grep video-abi Provides: xorg-input-abi-24, xorg-video-abi-23, xserver-xorg-video-modesetting -- System Information: Debian Release: stretch/sid APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: i386 (i686) Kernel: Linux 4.8.10-towo.1-siduction-686 (SMP w/2 CPU cores; PREEMPT) Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system)