This is a syntax error with /etc/default/grub: the quote character at the start of GRUB_DEFAULT line should be " rather than ”.
** 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/1777091 Title: package friendly-recovery 0.2.31ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/friendly-recovery/+bug/1777091/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs