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 } -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813126 Title: [19.04] GRUB_ENABLE_CRYPTODISK=y ignored if /boot/ in LUKSv2 format To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1813126/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs