Preparing to unpack .../adwaita-icon-theme_3.18.0-2ubuntu3_all.deb ...
Unpacking adwaita-icon-theme (3.18.0-2ubuntu3) over (3.18.0-2ubuntu2) ...
Preparing to unpack .../xserver-xorg-video-intel_2%3a2.99.917+git20160127-1ubuntu1_amd64.deb ...
Unpacking xserver-xorg-video-intel (2:2.99.917+git20160127-1ubuntu1) over (2:2.99.917+git20151217-1~exp1ubuntu1) ...
Processing triggers for libc-bin (2.21-0ubuntu5) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up libpam-systemd:amd64 (228-4ubuntu2) ...
Setting up udev (228-4ubuntu2) ...
addgroup: Il gruppo «input» già esiste come gruppo di sistema. Uscita.
update-initramfs: deferring update (trigger activated)
insserv: Service mountkernfs has to be enabled to start service udev
insserv: exiting now!
update-rc.d: error: insserv rejected the script header
dpkg: error processing package udev (--configure):
 subprocess installed post-installation script returned error exit status 1