package grub-pc 2.02~beta2-9ubuntu1.14 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127

[Michel DUFFET]

Je ne comprend rien à l'anglais

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: grub-pc 2.02~beta2-9ubuntu1.14
ProcVersionSignature: Ubuntu 4.4.0-87.110~14.04.1-generic 4.4.73
Uname: Linux 4.4.0-87-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.25
Architecture: amd64
Date: Wed Sep 20 10:00:18 2017
DuplicateSignature: package:grub-pc:2.02~beta2-9ubuntu1.14:subprocess installed post-installation script returned error exit status 127
ErrorMessage: subprocess installed post-installation script returned error exit status 127
InstallationDate: Installed on 2016-08-12 (403 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
InvalidGrubScript: /etc/default/grub
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-87-generic root=UUID=5effa51c-3718-495a-a61a-bab5a3c03eab ro quiet splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.7
 apt 1.0.1ubuntu2.17
SourcePackage: grub2
Title: package grub-pc 2.02~beta2-9ubuntu1.14 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127
UpgradeStatus: No upgrade log present (probably fresh install)

[Phillip Susi (psusi)]

You added the following invalid line to your /etc/default/grub file:

GRUB CMDLINE LINUX="acpi.power nocheck=1"

You will need to remove that.