/snap/subiquity/1459/usr/bin/subiquity:curtin.util.ProcessExecutionError:main:curthooks:builtin_curthooks:setup_grub:subp:_subp

[errors.ubuntu.com bug bridge]

The Ubuntu Error Tracker has been receiving reports about a problem regarding subiquity. This problem was most recently seen with package version 1459, the problem page at https://errors.ubuntu.com/problem/694a1c5cf6e4c5922e013a849abec18ede63f42e contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.

[Michael Hudson-Doyle (mwhudson)]

The log tail is this:

Found initrd image: /boot/initrd.img-4.15.0-76-generic
done
+ echo grub-install /dev/sda
grub-install /dev/sda
+ grub-install /dev/sda
Installing for i386-pc platform.
grub-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible.
grub-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged..
grub-install: error: will not proceed with blocklists.
+ exit
failed to install grub!

Stderr: ''
Unexpected error while running command.
Command: ['sh', '-c', 'exec "$0" "$@" 2>&1', 'install-grub', '--os-family=debian', '/target', '/dev/sda']
Exit code: 1
Reason: -
Stdout: carryover command line params 'debian-installer/language=fr keyboard-configuration/layoutcode?=fr keyboard-configuration/variantcode?=oss'
setting GRUB_CMDLINE_LINUX_DEFAULT to 'debian-installer/language=fr keyboard-configuration/layoutcode?=fr keyboard-configuration/variantcode?=oss' in etc/default/grub
updated /target/etc/default/grub to set GRUB_CMDLINE_LINUX_DEFAULT="debian-installer/language=fr keyboard-configuration/layoutcode?=fr keyboard-configuration/variantcode?=oss"
curtin non-uefi: installing grub-pc to: /dev/sda
+ pkg=grub-pc
+ shift
+ bootid=ubuntu
+ shift
+ bootver=
+ shift
+ grubpost=
+ grubcmd=grub-install
+ dpkg-reconfigure grub-pc
+ update-grub
Sourcing file `/etc/default/grub'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.15.0-76-generic
Found initrd image: /boot/initrd.img-4.15.0-76-generic
done
+ echo grub-install /dev/sda
grub-install /dev/sda
+ grub-install /dev/sda
Installing for i386-pc platform.
grub-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible.
grub-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged..
grub-install: error: will not proceed with blocklists.
+ exit
failed to install grub!

It's like we're trying to install without a bios_grub partition, but subiquity shouldn't let you do that.

[Michael Hudson-Doyle (mwhudson)]

We (well Paride) found at least one way to install without a bios_grub partition and that is fixed now, so closing.