package grub-efi-amd64 2.00-14ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 4

[zhoupen9]

After i installed grub-efi-amd64 and managed to boot into ubuntu, an error dialog popped up and tell me something went wrong with grub-efi-amd64, and then filed this bug.

My machine is a MacBook Pro MD213,
I installed Ubuntu 13.10 alpha1 in a legacy mode, and try to convert into EFI mode.

ProblemType: Package
DistroRelease: Ubuntu 13.10
Package: grub-efi-amd64 2.00-14ubuntu1
ProcVersionSignature: Ubuntu 3.10.0-2.9-generic 3.10.0
Uname: Linux 3.10.0-2-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.10.2-0ubuntu3
Architecture: amd64
Date: Sat Jul 6 03:58:11 2013
ErrorMessage: subprocess installed post-installation script returned error exit status 4
InstallationDate: Installed on 2013-07-01 (4 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64+mac (20130630)
InvalidGrubScript: /etc/grub.d/25_custom
MarkForUpload: True
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.10.0-2-generic root=UUID=29740ce7-a7a7-4700-8090-3362bbff6eb8 ro elevator=noop quiet splash vt.handoff=7
SourcePackage: grub2
Title: package grub-efi-amd64 2.00-14ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 4
UpgradeStatus: No upgrade log present (probably fresh install)

[Marcus Tomlinson (marcustomlinson)]

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

[Launchpad Janitor (janitor)]

[Expired for grub2 (Ubuntu) because there has been no activity for 60 days.]