fwiw, comment #3 happened after I reboot the computer, maybe changing into uefi mode. I forget. I no longer have access to the computer in question, so I won't be able to follow up with this bug report in the future.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1256398 Title: package grub-efi-amd64 2.00-19ubuntu2.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1256398/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs