16.04 ubiquity crashed due to package-install failure of grub2 during grub-install step

[TJ]

No idea why ubiquity crashed; maybe post mortem will reveal something.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.60 [modified: lib/partman/automatically_partition/question]
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: 1.375
Date: Wed Apr 20 22:49:10 2016
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160419)
ProcEnviron:
 LANGUAGE=en_GB.UTF-8
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Jean-Baptiste Lallement (jibel)]

From the logs

Apr 20 21:47:47 ubuntu ubiquity: Setting up grub-efi-amd64 (2.02~beta2-36ubuntu3) ...
Apr 20 21:47:48 ubuntu ubiquity:
Apr 20 21:47:48 ubuntu ubiquity: Creating config file /etc/default/grub with new version
Apr 20 21:47:48 ubuntu ubiquity: Installing for x86_64-efi platform.
Apr 20 21:47:49 ubuntu ubiquity: grub-install: error: attempt to install to encrypted disk without cryptodisk enabled. Set `GRUB_ENABLE_CRYPTODISK=1' in file `/etc/default/grub'..
Apr 20 21:47:49 ubuntu ubiquity: Failed: grub-install --target=x86_64-efi
Apr 20 21:47:49 ubuntu ubiquity: WARNING: Bootloader is not properly installed, system may not be bootable
Apr 20 21:47:49 ubuntu ubiquity: dpkg-query: no packages found matching dkms
Apr 20 21:47:49 ubuntu ubiquity: Setting up grub-efi-amd64-signed (1.66+2.02~beta2-36ubuntu3) ...
Apr 20 21:47:49 ubuntu ubiquity: Installing for x86_64-efi platform.
Apr 20 21:47:50 ubuntu ubiquity: grub-install: error: attempt to install to encrypted disk without cryptodisk enabled. Set `GRUB_ENABLE_CRYPTODISK=1' in file `/etc/default/grub'..
Apr 20 21:47:50 ubuntu ubiquity: dpkg: error processing package grub-efi-amd64-signed (--configure):
Apr 20 21:47:50 ubuntu ubiquity: subprocess installed post-installation script returned error exit status 1
Apr 20 21:47:50 ubuntu ubiquity: Errors were encountered while processing:
Apr 20 21:47:50 ubuntu ubiquity: grub-efi-amd64-signed
Apr 20 21:47:52 ubuntu ubiquity: E: Sub-process /usr/bin/dpkg returned an error code (1)

[TJ (tj)]

This isn't a duplicate of bug #1232237. In this case the config option variable wasn't added to /etc/default/grub.

I've done so many permutations of these encrypted installations now I cannot recall whether I did any manual partitioning in this particular session. The partman log appears to suggest I didn't customise or do manual partitioning but I'd have to look further into it.

[TJ (tj)]

Having looked more closely this bug was a result of user error; I did in fact repartition the installation device and had a separate partition for /boot/ which was also LUKS/dm_crypt. I had forgotten I needed to edit the /target/etc/default/grub whilst ubiquity was installing GRUB, and had to do it manually after ubiquity had completed.

This bug is about ubiquity actually *crashing* due to the package install failure rather than doing a clean error report and user-controlled quit.

For that reason I'm re-titling the bug so as not to distract from this bug reason with the mention of the GRUB_ENABLE_CRYPTODISK.

[Phillip Susi (psusi)]

I found the wrong bug to dup it against. This is the one that mentions that this option should be enabled by default.