Resolved! I can't really imagine how but the list file of xserver-xorg-core was corrupted by something. I removed it and reinstalled xserver-xorg-core and all goes good
-- package xkbset None [modified: /var/lib/dpkg/info/xkbset.list] failed to install/upgrade: il file con la lista dei file del pacchetto `xserver-xorg-core' contiene un filename vuoto https://bugs.launchpad.net/bugs/181530 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
