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
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https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1813126/+subscriptions
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