[Bug 1813126] Re: [19.04] GRUB_ENABLE_CRYPTODISK=y ignored if /boot/ in LUKSv2 format

[Russ Long]

I can confirm similar behavior, but slightly different setup.

I installed 19.04 from scratch, and used the disk encryption with lvm
option during setup.

Everything was working fine until upgrading to the latest kernel,
5.0.0-16-generic.

The previous kernel I had installed, 5.0.0-15-generic, still works fine.

I see no differences in the grub config for the 2 kernels:

	menuentry 'Ubuntu, with Linux 5.0.0-16-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.0.0-16-generic-advanced-69cc3212-6aef-415d-a65d-30362fc514f6' {
		recordfail
		load_video
		gfxmode $linux_gfx_mode
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_gpt
		insmod ext2
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root  070883ed-c707-4199-b2b2-84145dc3355d
		else
		  search --no-floppy --fs-uuid --set=root 070883ed-c707-4199-b2b2-84145dc3355d
		fi
		echo	'Loading Linux 5.0.0-16-generic ...'
		linux	/vmlinuz-5.0.0-16-generic root=/dev/mapper/ubuntu--vg-root ro  quiet splash $vt_handoff
		echo	'Loading initial ramdisk ...'
		initrd	/initrd.img-5.0.0-16-generic
}



	menuentry 'Ubuntu, with Linux 5.0.0-15-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-5.0.0-15-generic-advanced-69cc3212-6aef-415d-a65d-30362fc514f6' {
		recordfail
		load_video
		gfxmode $linux_gfx_mode
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_gpt
		insmod ext2
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root  070883ed-c707-4199-b2b2-84145dc3355d
		else
		  search --no-floppy --fs-uuid --set=root 070883ed-c707-4199-b2b2-84145dc3355d
		fi
		echo	'Loading Linux 5.0.0-15-generic ...'
		linux	/vmlinuz-5.0.0-15-generic root=/dev/mapper/ubuntu--vg-root ro  quiet splash $vt_handoff
		echo	'Loading initial ramdisk ...'
		initrd	/initrd.img-5.0.0-15-generic
	}

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https://bugs.launchpad.net/bugs/1813126

Title:
  [19.04] GRUB_ENABLE_CRYPTODISK=y ignored if /boot/ in LUKSv2 format

Status in grub2 package in Ubuntu:
  Incomplete

Bug description:
  On my freshly-installed and up-to-date 18.10 with full-disk encryption, I decided to upgrade to 19.04 (dev) using _update-manager -d_.
  Everything seemed fine, until I rebooted and the Grub configuration apparently had been overwritten, and it does not offer to enter the master password, so cannot find the root VG.

  This is all happening on my Lenovo T480 PC, with only Ubuntu (no dual-
  boot).

  I tried boot-repair, applying any suggestion it threw at me, but it
  could not fix the issue.

  I did try to add GRUB_ENABLE_CRYPTODISK=y in /etc/default/grub and
  successfully run update-grub in a chroot, but this did not fix the
  issue.

  Feel free to ask for more details, but diagnostic is limited, as the
  system is not booting, from the very early stages.

  Thanks.

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