You edited your /etc/default/grub file and used the wrong quotes on this line:
GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash" Note that the opening quote is slanted. ** Changed in: grub2 (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/1617539 Title: package grub-pc 2.02~beta2-36ubuntu3.2 failed to install/upgrade: el subproceso instalado el script post-installation devolvió el código de salida de error 2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1617539/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs