The file /etc/default/grub has incorrect syntax, there is a double quote character missing at the end of the GRUB_CMDLINE_LINUX line.
** Changed in: friendly-recovery (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1756686 Title: package friendly-recovery 0.2.36ubuntu1 failed to install/upgrade: il sottoprocesso installato script di post-installation ha restituito lo stato di errore 2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/friendly-recovery/+bug/1756686/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs