Public bug reported:
I had a working Ubuntu 15.10 installation (which itself was an upgrade
from an earlier release). Got prompted if I wanted to upgrade to 16.04
and answered yes. During the upgrade several dozen packages failed to
install, many of them libraries. I was eventually left with a system
that would not work so I decided to reinstall the OS, keeping existing
user files intact (booting from USB). The install proceeded without
problems but at the end I got the error message "The 'grub-efi-
amd64-signed' package failed to install into / target/." Now I'm left
with a computer without any working OS.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.63
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CasperVersion: 1.376
Date: Tue Apr 26 17:51:26 2016
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed
boot=casper only-ubiquity quiet splash --- cdrom-detect/try-usb=true noprompt
LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: grub-installer (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug ubiquity-2.21.63 ubuntu xenial
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https://bugs.launchpad.net/bugs/1575092
Title:
Reinstall of Ubuntu 16.04 over failed upgrade of Ubuntu (15.10 ->
16.04) results in grub installation failure
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