The error in your log is: Installing for x86_64-efi platform. grub-install: error: cannot open `/boot/efi/EFI/BOOT/BOOTX64.efi': Is a directory. dpkg: error processing package shim-signed (--configure): subprocess installed post-installation script returned error exit status 1
This indicates that your EFI System Partition has been corrupted. You probably need to remove /boot/efi/EFI/BOOT/BOOTX64.efi to let the upgrade complete successfully. Reassigning this bug to grub; it's possible there's something we can do here to make the upgrade more robust. ** Package changed: shim-signed (Ubuntu) => grub2 (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1726679 Title: package shim-signed 1.32+0.9+1474479173.6c180c6-1ubuntu1 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/1726679/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
