package grub-efi-amd64 2.02~beta2-9ubuntu1.7 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[jirka]

i don t know

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: grub-efi-amd64 2.02~beta2-9ubuntu1.7
ProcVersionSignature: Ubuntu 3.19.0-39.44~14.04.1-generic 3.19.8-ckt9
Uname: Linux 3.19.0-39-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
Date: Thu Jan 7 11:19:05 2016
DuplicateSignature: package:grub-efi-amd64:2.02~beta2-9ubuntu1.7:subprocess installed post-installation script returned error exit status 2
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationDate: Installed on 2015-11-19 (49 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
InvalidGrubScript: /etc/default/grub
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-39-generic.efi.signed root=UUID=bfba39b0-143c-4b43-a362-0afdd0596c3b ro quiet splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.5
 apt 1.0.1ubuntu2.10
SourcePackage: grub2
Title: package grub-efi-amd64 2.02~beta2-9ubuntu1.7 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)

[Manfred Hampl (m-hampl)]

".../usr/sbin/grub-mkconfig: 35: /etc/default/grub: Syntax error: EOF in backquote substitution..."

Seems to be an error in /etc/default/grub, probably in line
GRUB_CMDLINE_LINUX="acpi_osi=\"!Windows 2012\"

I assume that there is a closing quote character missing.

Try changing to
GRUB_CMDLINE_LINUX="acpi_osi=\"!Windows 2012\""

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.